There are 116 electrons in four atoms of Cu.
A Cu atom contains 29 protons, so it also contains 29 electrons.
[tex]\text{No. of electrons } = \text{ 4 Cu atoms } \times \frac{\text{29 electrons}}{\text{1 Cu atom }} = \text{ 116 electrons }\\[/tex]
What are the main specialized subunits of cells. They compartmentalize and make the cell work.
a. carbohydrates
b. proteins
c. organelles
d. amino acids
a i took this test yesterday.
Answer: Organelles
Explanation:
The cell organelles are the basic structure that is present inside every cell which helps the cell to perform its survival activities and processes.
The various types of organelles in the cell helps in performing various functions. Such as the mitochondria helps in the conversion of carbohydrates into adenosine triphosphate.
The Golgi body in the cell helps in the sorting and modification of proteins. It helps in the transport the secretion of the cells after modifications.
Hence, the correct answer is Organelles.
Which of the following correctly explains how air exerts pressure on us?
The molecules in the air located above us are pulled down towards the Earth by gravity, causing a downward pressure on objects below.
The normal force produced by the Earth against our bodies causes the air to be pressurized.
The difference in the amount of air outside and the amount inside of our bodies creates air pressure.
The strength of molecular bonds between air molecules is greater than the strength of bonds between molecules in our bodies, creating pressure.
The correct explanation of how air exerts pressure on us is:
The molecules in the air located above us are pulled down towards the Earth by gravity, causing a downward pressure on objects below.
Numerous molecules that make up air are constantly moving. These air molecules are drawn downward toward the Earth's surface by the gravity of the planet. Because of this, the air above us has a weight that presses down on everything below it, including our bodies. Atmospheric pressure is the name given to this occurrence.
The other possibilities are not accurate ways to explain how air presses on us. The Earth's natural force acting on our bodies does not immediately pressurize the air. Our bodies' internal pressure regulation, not the air's outward pressure, is what determines how much air is present outside and inside of us. Moreover, the strength of the chemical connections that connect air molecules to our body's molecules is not directly relevant to how air pressure is exerted on us.
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A goldsmith melts 12.4 grams of gold to make a ring. The temperature of the gold rises from 26°C to 1064°C, and then the gold melts completely. If gold’s specific heat is 0.1291 joules/gram degree Celsius and its heat of fusion is 63.5 joules/gram, how much energy is gained by the gold?
The gold gains a total of ____ joules of energy.
I was given this by somebody. No idea what to do with this.
QJ=(12.4g*(1064-26)°C*0.1291J/g/°C)+(12.4g*63.5J)
Answer:
The gold gains a total of 2.468 kilo-joules of energy.
Explanation:
Total heat or energy gained by the gold is equal to heat applied and heat required to melt the gold completely.
Total energy = Q+ Q'
Heat of fusion of gold =[tex]\Delta H_{fus} =63.5 joules/gram[/tex]
Mass of gold melted ,m= 12.5 g
Specific heat of gold ,c= 0.1291 joules/gram °C
Change in temperature = ΔT = 1064°C - 26°C = 1038 °C
Heat of applied to the gold = Q
[tex]Q=mc\Delta T[/tex]
[tex]Q'=\Delta H_{fus}\times m[/tex]
Total energy = Q+ Q'
[tex]=12.5 g\times 0.1291 joules/gram ^oC\times 1038 ^oC+63.5 joules/gram\times 12.5 g[/tex]
= 2,468.82 Joule= 2.468 kilo-Joule
The gold gains a total of 2.468 kilo-joules of energy.
Will give brainliest! Describe two physical and two chemical changes involved in cooking
Two physical changes is:
• Breaking
• Boiling
Two chemical changes could be:
• Molecules rearranging with other molecules to make new substance
• Bubbling/fizzing
The prefix 'mili-' means a thousandth. So a mili-liter is a thousandth of a liter. 1 mililiter = 1/1000 liter How many liters is 1,838 mililiters? Round your answer to the nearest tenth of a liter
Answer:
Answer:- 1.8 L
Solution:- The given volume is 1838 mililiters and we are asked to convert it to liters. We know that:
[tex]1mL=(\frac{1}{1000})L[/tex]
Where, mL stands for mililiters and L stands for liters.
Let's make the set up using this conversion factor to convert the given mL to L.
[tex]1838mL(\frac{1L}{1000mL})[/tex]
= 1.838 L
They asks to round the answer to the nearest tenth. So, it becomes 1.8 L.
crystals that can be toxic if inhaled and cause serious respiratory problems
why hello there
It depends of what kind of mineral you inhale if you inhale one of thease 9 you are in risk of dying
ChalcanthiteStibniteAsbestosArsenopyriteCinnabarGalenaHutchinsoniteOrpimentTorberniteIf my answer helped please mark me as brainliest thank you and have the best day ever!
Which of the following is the electron configuration of an electrically neutral alkaline earth metal
A. 1s2 2s1
B. 1s2 2s2 2p2
C. 1s2 2s2 2p6 3s1
D. 1s2 2s2 2p6 3s2 3p6 4s2
I feel like the answer is D, but I’m not sure.
Answer:
Option d, 1s2 2s2 2p6 3s2 3p6 4s2
Explanation:
Alkaline earth metals belong to group 2 of the periodic table. Elements belonging to group 2 are beryllium, magnesium, calcium, strontium and barium and radium.
Alkaline earth metals have 2 valence electrons and these two electrons are filled in outermost s sub shell.
General electronic configuration of alkaline earth metal: ns^2
In ionized state, number of electrons in s sub shell will not be 2.
Among the given, only 1s2 2s2 2p6 3s2 3p6 4s2, has 2 electrons in s sub shell. So, it an electronic configuration of neutral alkaline earth metal.
The correct answer to the question is Option D. 1s² 2s²2p⁶ 3s²3p⁶ 4s²
Alkaline earth metals are metals belonging to the group 2 of the periodic table.
They have 2 valence electrons.
Now, we shall determine which of the option given above that has valency of 2 electrons
For Option A1s² 2s¹
Valence electron shell = 2s¹
Valence electron = 1For Option B1s² 2s²2p²
Valence electron shell = 2s²2p²
Valence electron = 2 + 2
Valence electron = 4For Option C1s² 2s²2p⁶ 3s¹
Valence electron shell = 3s¹
Valence electron = 1For Option D1s² 2s²2p⁶ 3s²3p⁶ 4s²
Valence electron shell = 4s²
Valence electron = 2From the illustraton made above, we can see that only Option D has a valence electron of 2.
Therefore, the correct answer to the question is Option D. 1s² 2s²2p⁶ 3s²3p⁶ 4s²
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If Earth was like a hardboiled egg, which part of Earth would the eggshell represent and why?
Answer:
D. Crust, as its depth is less than 100 kilometers
Explanation:
16) Which of these is a physical property? A) boiling point B) flamability C) reactivity D) toxicity
a physical property would be a. boiling poing
Answer: A) boiling point
Explanation:
Chemical property is defined as the property of a substance which is observed during a reaction where the chemical composition identity of the substance gets changed.
Physical property is defined as the property which can be measured and whose value describes the state of physical system. For Example: State, density etc.
Boiling point is a physical property as it involves change of state.
Flammability is a chemical property as there is formation of new substances.
Reactivity is a chemical property as there is formation of new substances.
Toxicity is a chemical property as there is formation of new substances.
How would adding the catalyst nitrogen monoxide (NO) affect this reaction?
2SO2(g) + O2(g) → 2SO3(g)
A.
NO increases the rate at which SO3 molecules are formed.
B.
NO reacts with SO3 to produce more SO2 molecules.
C.
NO decreases collisions between the SO2 and O2 molecules.
D.
NO increases the concentration of the SO2 and O2 molecules.
E.
NO increases the activation energy of the SO2 and O2 molecules.
Answer: A. NO increases the rate at which [tex]SO_3[/tex] molecules are formed.
Explanation: The catalyst makes it possible for the reaction to take place by another path that makes possible reaction at a lower energy.
Activation energy is the extra energy that must be supplied to reactants in order to cross the energy barrier and thus convert to products.
A catalyst is a substance which increases the rate of a reaction by taking the reaction through a different path which involves lower activation energy and thus more reactants [tex](SO_2)[/tex] and [tex](O_2)[/tex] undergo collision and can cross the energy barrier and convert to products [tex](SO_3)[/tex]
Thus NO increases the rate at which [tex]SO_3[/tex] molecules are formed.
Answer:
The answer above is correct
A. NO increases the rate at which molecules are formed.
Explanation:
Think about the lab procedure you just read. Label each factor below with V for “variable” or C for “constant”.
The temperature of the gas:
The amount of gas in the tube (in terms of mass and moles):
The radius of the tube:
The temperature of the gas (changed by the water surrounding it):
The type of gas:
The pressure of the gas:
Answer:
answer in picture
Explanation:
Each factor listed is classified as either a variable or constant based on how it is treated in gas behavior experiments, which helps in understanding the ideal gas law.
Explanation:When considering the lab procedure related to the behavior of gases, we can label each factor with 'V' for variable or 'C' for constant, based on the information provided about gas laws.
Early scientists studied the relationship between gas variables, holding some factors constant while varying others to observe the effects on gas behavior—this concept is crucial in understanding the ideal gas law and gas properties.
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2.822 mol of nickel has _________ atoms of nickel.
(Enter just the number for this one.)
Hello!
To find the number of atoms in 2.822 moles of nickel, we need to multiply it by Avogadro's number. Avogadro's number is 6.02 x 10^23 atoms.
2.822 moles x (6.02 x 10^23) ≈ 1.698844 x 10^24
Therefore, there are about 1.70 x 10^24 atoms (according to the number of significant figures) in 2.822 moles of nickel.
What is the empirical formula of a compound composed of 30.5 g potassium (k) and 6.24 g oxygen (o)?
The empirical formula of the compound is K₂O.
Step 1. Calculate the moles of each element
The empirical formula is the simplest whole-number ratio of atoms in a compound.
The ratio of atoms is the same as the ratio of moles.
So, our job is to calculate the molar ratio of K to O.
Moles of K = 30.5 g K × (1 mol K/(39.10 g K) = 0.7801 mol K
Moles of O = 6.24 g O × (1 mol O/16.00 g O) = 0.3900 mol O
Step 2. Calculate the molar ratio of the elements
Divide each number by the smallest number of moles
Ni:F = 0.1552:0.3100 = 2.001:1 ≈ 2:1
Step 3: Write the empirical formula
EF = K₂O
The empirical formula for a compound composed of 30.5 g potassium and 6.24 g oxygen is K2O, as determined by calculating the molar ratio from the given masses and atomic weights.
Explanation:To find the empirical formula of a compound, we first use the provided weights to calculate the mole ratio of the elements in the compound. We start with the mass of each element and convert it to moles by dividing by the atomic weight. In this case, we have 30.5 g of potassium (K = 39.10 g/mol) and 6.24 g of oxygen (O = 16.00 g/mol), which give us approximately 0.780 mol of potassium and 0.390 mol of oxygen.
To get the empirical formula, we then divide each of the mole quantities by the smallest value to get the subscript for each element. Therefore, our mole ratio is 2:1, resulting in the empirical formula being K2O.
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Use the Periodic Table. Choose the correct electron configuration of carbon using the data shown in the electron configuration chart. 1s22s22p1 1s22s22p4 1s22s22p2 1s22s12p2
I think I have done a question like this before and i'm pretty sure your answer would be the 2nd one 1s22s22p4. I'm not 100% sure but try it at least.
Answer:
electron configuration of carbon: 1s²2s²2p²
Explanation:
The electron configuration of atoms (or ions) is depicted based on the Aufbau principle according to which electrons are added to various orbitals such that the orbital with the lowest energy gets occupied first followed by the next higher orbital.
The energy ordering of orbitals from the lowest to the highest is:
1s < 2s < 2p < 3s < 3p < 4s < 3d ....
s orbitals can accommodate a maximum of 2 electrons
p orbitals = 6 electrons
d orbitals = 10 electrons
Now, the atomic number of carbon = 6
Since it is neutral, the atomic number = number of electrons = 6
Based on the Aufbau principle the electron configuration of C would be
1s²2s²2p²
On the basis of electronegativity, which of these pairs of elements is most likely to form polyatomic ions?
Question 1 options:
O and P
Na and Br
Cs and Cl
Ba and O
Question 2
Which of the following pairs of elements would most likely combine to form a salt?
Question 2 options:
Na and C
Cs and I
I and F
N and F
Question 3
Which of the following substances best conducts electricity in an aqueous solution?
Question 3 options:
CO 2
CH 3OH
H 2O
KCl
Question 4
Which of the following rules would apply to the naming of CaCl2?
Question 4 options:
metal cation + nonmetal anion(–ide)
metal cation + (roman numeral valence) + nonmetal anion(–ide)
metal + polyatomic anion
polyatomic cation + nonmetal anion(–ide)
Question 5
A salt forms in the reaction of aluminum with chlorine. What is the most likely formula unit of this salt?
Question 5 options:
AlCl
AlCl 3
AlCl 2
Al 3Cl
Question 6
In a Lewis diagram for methane (CH 4), which atom or atoms is inside, or central?
Question 6 options:
hydrogen
neither, carbon and hydrogen are both inside
carbon
neither, carbon and hydrogen are both outside
Question 7
On the basis of bonding, which of the following is true about sodium chloride when compared to sucrose?
Question 7 options:
Sodium chloride dissolves in water, but sucrose does not.
Sodium chloride has a lower melting point than sucrose.
Sodium chloride has a higher boiling point than sucrose.
Sodium chloride crystals are softer than sucrose crystals.
Question 8
Which of the following is true about the compound ammonium phosphate [(NH 4) 3PO 4]?
Question 8 options:
It is a mixture of two monatomic nitrogen and hydrogen ions and one polyatomic phosphate ion.
It is a salt of three polyatomic ammonium ions and one polyatomic phosphate ion.
It is a mixture of three polyatomic ammonium ions and two polyatomic phosphate ions.
It is a salt of monatomic nitrogen, hydrogen, phosphorus, and oxygen ions.
Question 9
Which of these pairs of elements is most likely to be part of a polyatomic ion?
Question 9 options:
K and F
Mg and Br
l i and i
S and O
Question 10
What is the correct name of the compound Mn 3(PO 4) 2?
Question 10 options:
manganese(II) phosphate
manganese(III) phosphate
manganese(I) phosphate
manganese phosphate
1) Answer is: O and P.
Electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.
Oxygen (O) has greater electronegativity than phosphorus (P), because of that oxygen is partially negative and phosporus is partially positive.
Polyatomic ion is for example a molecule that has been ionized by gaining or losing electrons.
Oxygen and phosphorus can form ion PO₄³⁻.
2) Answer is: Cs and I.
Cesium (Cs) and iodine form salt cesium iodide (CsI) with ionic bond.
Ionic bond is the electrostatic attraction between oppositely charged ions (cations and anions).
Cesium (metal) lost one electron and form cation Cs⁺; iodine (nonmetal) gain one electron and form anion I⁻.
3) Answer is: KCl.
Potassium chloride is a salt with ionic bond.
Substances with ionic bond conduct an electric current in liquid and aqueous solutions, but not in solid state, because in liquids ions are mobile, contrary to solids where ions are fixed.
Dissociation of potassium chloride in water: KCl(aq) → K⁺(aq) + Cl⁻(aq).
4) Answer is: metal cation + nonmetal anion(–ide).
Name of this compound is calcium chloride.
Calcium chloride is a inorganic salt with ionic bonds between calcium and chlorine. It is a colorless crystalline solid at room temperature, highly soluble in water.
Calcium has oxidation number +2 and chlorine has oxidation number -2.
5) Answer is: AlCl₃.
Balanced chemical reaction: 2Al(s) + 3Cl₂(g) → 2AlCl₃(s).
Aluminium chloride is a salt with ionic bonds.
Aluminium (metal from group 13) has oxidation number +3 and chlorine (nonmetal from group 17) has oxidation number -1, chemical compound has neutral charge (+3 + 3 · (-1) = 0).
6) Answer is: carbon.
In molecule of methane (CH₄) all the atoms around the central element (carbon) are equivalent (four hydrogens) and it has a net dipole moment of 0 (vectors of dipole moments cancel each other, dipole moment is zero).
Methane (CH₄) is gaseous molecule with tetrahedrale structure, carbon is sp3 hybridized.
7) Answer is: Sodium chloride has a higher boiling point than sucrose.
Sodium chloride (NaCl) has ionic bonds and sucrose (C₁₂O₂₂O₁₁) has covalent bonds.
Sucrose or table sugar (C₁₂O₂₂O₁₁) composed of two monosaccharides. Monosaccharides glucose and fructose are linked with an ether bond between C1 on the glucosyl subunit and C2 on the fructosyl unit.
Boiling point of sodium chloride is 1413°C and sucrose decomposes at 186°C and form caramel.
8) Answer is: It is a salt of three polyatomic ammonium ions and one polyatomic phosphate ion.
Polyatomic ammonium cation has charge of +1 and polyatomic phosphate anion has charge -3.
Ammounium ion is polyatomic because it is composed of one nitrogen and four hydrogen atoms.
Phospate anion is polyatomic because it is composed of one phosphorus and four oxygen atoms.
9) Answer is: S and O.
Electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.
Oxygen (O) has greater electronegativity than sulfur (S), oxygen is partially negative and sulfur is partially positive.
Sulfur and oxygen can form, for example, SO₃²⁻ (sulfite anion) or SO₄²⁻ (sulfate anion).
10) Answer is: manganese(II) phosphate.
Manganese (II) phosphate (Mn₃(PO₄)₂) is an ionic salt.
Manganese has oxidation number +2 and phosphate has charge -3.
3 · (+2) + 2 · (-3) = 0; chemical compound has neutral charge.
Formula for manganese(III) phosphate is MnPO₄.
Formula for manganese(I) phosphate is Mn₃PO₄.
If a decrease in temperature accompanies a reaction, what occurred?
Question 1 options:
Energy was released.
Energy was destroyed.
Energy was created.
Energy was absorbed.
If a decrease in temperature accompanies a reaction, Energy was absorbed.
So the forth option is correct option.
Explanation:If decrease in temperature occurs during a reaction, it indicates that the reaction is endothermic reaction.Endothermic process describes the process or reaction in which the system absorbs energy from its surroundings, usually in the form of heat.So energy in form of heat is absorbed.A scientist discovers a new type of polymer. What must be true about this polymer?
A.
It contains carbon atoms arranged in a ring structure.
B.
It has double bonds between all the carbon atoms.
C.
It contains molecules of many different types.
D.
It is made of large molecules with repeating units.
This polymer must D. be made of large molecules with repeating units.
A polymer consists of long chains of smaller repeating units called monomers.
For example, polyethylene consists of long chains of ethylene (CH₂=CH₂) units joined together end to end.
The formula for polyethylene is -CH₂CH₂-(CH₂CH₂)ₙ-CH₂CH₂-, where n is usually a number between 500 and 10 000.
When salt is added to water, all of the following happen except A. the water molecules surround the dissociated ions. B. the positive part of the water molecule is attracted to the negative ions. C. the negative part of the water molecule is attracted to the positive ions. D. the salt breaks into positive chlorine ions and negative sodium ions.
Answer: Option (d) is the correct answer.
Explanation:
When salt is added to water then the sodium and chlorine ions dissociate.
After the dissociation, both the positive and negative ions that is the sodium and chlorine ions will be surrounded by the water molecules. Thereafter, the positive part of water molecule will be attracted to the negative ions that is the chlorine ions and vice versa.
As sodium ion is a cation so it will hold a positive charge, and chlorine ion is an anion so it will hold a negative charge.
Thus, it can be concluded that when salt is added to water, all of the above will happen except option (d) that is the salt breaks into positive chlorine ions and negative sodium ions.
For the reaction C3H8 + O2 CO2 + H2O, match the proper coefficient to the chemical substance it goes with for a balanced reaction. A. 1 CO2 B. 5 O2 C. 3 C3H8 D. 4 H2O
Answer:
1: C3H8
5: O2
3: CO2
4: H2O
Explanation:
The balanced equation for the given reaction is C[tex]_3[/tex]H[tex]_8[/tex] + 5O[tex]_2[/tex] → 3CO[tex]_2[/tex]+4H[tex]_2[/tex]O. In other words, both mass and charge on the both side of the reaction are balanced.
What is balanced equation ?A balanced equation indeed a chemical reaction equation in which the overall charge and the amount of atoms for every element inside the reaction are the same for both the products and reactants. In other words, both mass and charge on the both side of the reaction are balanced.
An imbalanced chemical equation describes the products and reactants of a chemical reaction however does not include the quantities needed to meet mass conservation. The balanced equation for the given reaction is C[tex]_3[/tex]H[tex]_8[/tex] + 5O[tex]_2[/tex] → 3CO[tex]_2[/tex]+4H[tex]_2[/tex]O.
Therefore, the balanced equation for the given reaction is C[tex]_3[/tex]H[tex]_8[/tex] + 5O[tex]_2[/tex] → 3CO[tex]_2[/tex]+4H[tex]_2[/tex]O.
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Which of the following acronyms does not represent a managed care plan? a. HMO b. PPO c. POS d. SOR
The answer would be SOR.
A managed care plan is a type of insurance for health and there are three types: HMO; PPO; and POS.
HMO stands for Health Maintenance Organizations. This type of plan pays for the care provided within the network.
PPO stands for Preferred Provider Organizations. Typically, pays bigger if within the network, but also pays out even if care was provided outside the network.
POS stands for Point of Service lets you choose between HMO or PPO for every time you need health services/care.
Answer:
The answer would be SOR
Explanation:
Calculate the volume mL A cube that is 2.20 cm on
The volume of the cube in mL is 10.684 mL
We know that the volume of a cube with length of sides L is V = L³
Since the length of side of our cube is 2.20 cm, its volume V = L³ = (2.20 cm)³ = 10.648 cm³.
Since 1 dm³ = 1 liter and 1000 cm³ = 1 dm³, we convert the volume of the cube to dm³.
So, 10.684 cm³ = 10.684 cm³ × 1 dm³/1000 cm³ = 0.010684 dm³
Since 1 dm³ = 1 L,
0.010684 dm³ = 0.010684 L
We now convert this volume of the cube to milliliter(mL)
Since 1000 mL = 1 L.
0.010684 L = 0.010684 × 1 L = 0.010684 × 1000 mL = 10.684 mL
So, the volume of the cube in mL is 10.684 mL
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Which atom or ion is the largest?
A.
K
B.
K+
C.
Ca
D.
Ca2+
E.
Li
i think its either C or E
The elements beryllium, calcium, and strontium are all in group 2. What is the correct relationship of these elements regarding their ionization energy?
A.
Ca < Be < Sr
B.
Sr < Be < Ca
C.
Be < Ca < Sr
D.
Sr < Ca < Be
E.
Ca < Sr < Be
Which substances are made up of polymers?(PICK MORE THEN ONE YALL)
DNA
a glass bottle
ice crystals
the proteins in hair
rubber car tires
Size
As the charge increases (becomes more positive), the size decreases.
Also the number of protons and electrons matters in the atom itself. Li will have the smallest size because their are not that many electrons to repulse as say the Ca and K.
The largest member of that group is the one having the most number of electrons and is not an ion. In general the higher the charge, the smaller the radius.
K > K+ > Ca2+
Answer: A
Ionization Energy
As you go down the periodic table staying in the same column of the periodic table it takes LESS energy to break the outer shell electrons away. So the correct order for the column II elements is something like D.
Be is closest to the top of the periodic table and has the highest ionization energy
Ca is the next closest to the top and has a medium size ionization energy
Sr has the lowest ionization energy.
Answer C is backwards.
Answers A B and E are all in the wrong order of moving down Column II. The comment applies to staying in the same column and moving from top to bottom.
Polymers
A polymer is a complex combination of Carbon, Hydrogen and Oxygen (mainly). Other elements are possible but the majority is the listed ones.
DNA is a polymer
A glass bottle is made from SiO2 and is not a polymer
Ice crystals are actually water molecules. Those crystals are not polymers
Hair Proteins (like wool and silk) are made of polymers.
Rubber used for car tires are polymers.
You should count 3 items as your answer.
Answer:
AK
Explanation:
How did Dmitri Mendeleev deal with elements that had not yet been discovered?
He left blanks for them in his periodic table, as he predicted they would be discovered.
He created them in his laboratory and placed them in his table.
He ignored them, placing them in the table and shifting others when they were discovered.
He gave them names and properties and placed them in the table.
A. He left blanks for them in his periodic table, as he predicted they would be discovered.
A certain compound is made up of one carbon (c) atom, two fluorine (f) atoms, and one oxygen (o) atom. What is the chemical formula of this compound?
The chemical formula is CF₂O.
Answer:
The chemical formula is [tex]CF_2O[/tex]
Explanation:
To determine how the molecule will be conformed you need to have in mind the valence number of each element present:
F= -1 O= -2 C= +4Now, as the only one positive, the C will be the central atom with a doble bond to the O and a single bond to each F.
In that way all atoms completed the octet and achive stability
The equilibrium system described by this equation has reactant molecule(s) and product gas molecule(s).
The given equilibrium system has the number of reactant molecules are 4, and the number of product molecules are 2.
Equilibrium has been the condition that has been marked with the presence of equal number of product and reactant.
Equilibrium systemThe given reaction has been:
[tex]\rm N_2\;+\;3\;H_2\;\leftrightharpoons\;2\;NH_3[/tex]
The number of atoms of each molecule on the product and the reactant side has been equal. The number of molecules has been the repeating unit for reactant and product.
The number of molecules on the reactant side has been the sum of hydrogen and nitrogen molecules. The number of hydrogen has been 3, while the number of nitrogen has been 1.
The total number of reactant molecule has been 4.
The number of product molecules, are 2 molecules of ammonia.
Thus, in the given equilibrium system, the number of reactant molecules are 4, and the number of product molecules are 2.
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The average weather pattern of a region over a long period of time is known as
weather
climate
elevation
conditions
Answer:
Climate
Explanation:
Weather is like the temperature over time
The elevation is height like the elevation on a mountain
Conditions like its rainy or cloudy
Climate is the certain weather over a period of time.
The average weather pattern of a region over a long period of time is known as climate. The changes in climate occurs due to the change in heat and light radiated from sun.
What is weather?Weather is the scientific term used to indicate the atmospheric condition of a region over a short period of time. The difference in weather depends on the landscape of the region.
The different weather condition occurs in different latitudes of earth due to the difference in the heat and light radiated to these regions. The tilted axis of earth makes the heat radiation impact differently in each poles of earth.
The average weather pattern of a region over a long period of time is known as climate. The changes in climate occurs due to the change in heat and light radiated from sun. Climates of various ecosystems alters with respect to the peculiarities of the biosystems there.
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The prefix 'kilo-' means a thousand.
1 kilogram=1,000 grams
How many kilograms is 527 grams?
Round your answer to the nearest tenth of a kilogram.
I get 0.54 im i correct
Answer: 0.5 kilograms
Explanation:
One kilogram is equal to a thousand grams.
Supposing x to be the number of kilograms equal to 527 grams, we can write it as:
1 kg = 1000 grams
x kg = 527 grams
To solve for x, we can simply divide 527 grams by 1000 thousand grams to get the answer.
x = 527 / 1000
x = 0.527
Rounding this value to the nearest tenth, it will become 0.5 kilograms.
Given data:
Mass in grams = 527 g
Mass in kilograms = ?
Solution:
1 kilogram=1,000 grams
1 gram = 1/1000 kilograms
527 gram = 1/1000 * 527
527 grams = 0.527 kilogram
Round of answer: 00.5 kg
Part 2.You get 0.54 but the calculated answer is 0.572.
So without round off you are wrong.
With round off you are correct.
Put the following molecules in order from least kinetic energy to greatest
Cool water
Frozen water
Warm water
Water vapor
Frozen water,cool water,warm water,water vapor.
Final answer:
The order from least to greatest kinetic energy of water in different states is frozen water (ice), cool water, warm water, and water vapor, in accordance with the kinetic molecular theory which relates temperature and phase of matter to kinetic energy.
Explanation:
To rank the different states of water according to their kinetic energy from least to greatest, we must understand that kinetic energy is related to the temperature and phase of matter. The kinetic molecular theory (KMT) explains that as the temperature increases, so does the kinetic energy of the molecules in a substance. Therefore, molecules in the solid phase (ice) have the least kinetic energy because they are at the lowest temperature, while molecules in the gaseous phase (water vapor) have the most kinetic energy due to the highest temperature.
Frozen water (Ice) - Solid state with the lowest kinetic energy.
Cool water - Higher kinetic energy than ice, as it is a liquid at a lower temperature.
Warm water - Even higher kinetic energy, as it is liquid at a higher temperature.
Water vapor - Gas state with the highest kinetic energy.
Thus, the correct order from least to greatest kinetic energy is: frozen water (ice), cool water, warm water, and water vapor.
Which time is equivalent to 3 years?
A.
9.4 × 107s
B.
1.6 × 106s
C.
3.0 × 107s
D.
6.3 × 106s
Why do you think scientist can use the basic properties of matter to help identify an unknown substance?
They can use the properties to test and come to some kind of conslusion about the object because in some way it's gotta correlate back to one of the different properties of matter.