Each compound particle contains 1 atom of element A. However, not all atoms of element B are used, signifying that some are left over after the compounds are formed.
Explanation:In this case, the question is looking at how atoms of element A and element B are combining to form 6 compounds. If we break down the numbers, 6 atoms of A combine with 8 atoms of B to create 6 compound particles. This means that for each compound, there must be 1 atom of element A (6 atoms of A / 6 compounds = 1 atom of A per compound) and roughly 1.33 atoms of element B (8 atoms B / 6 compounds = 1.33), but as we cannot have a fraction of an atom, this suggests that not all atoms of element B are used in the creation of these compounds, perhaps leaving some atoms of element B left over.
For a chemically correct scenario, all participating atoms are usually used up in the formation of compounds unless specified otherwise, illustrating the principle of matter conservation in chemical reactions.
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Each particle contains 1 atom of element A and 1 atom of element B. All 6 atoms of element A and 8 atoms of element B are used to form the compounds.
Explanation:In this compound, 6 atoms of element A combine with 8 atoms of element B to form 6 compound particles. To determine the number of atoms in each particle, we divide the total number of atoms by the total number of particles. In this case, each particle contains 1 atom of element A and 1 atom of element B.
Not all atoms are used to form compounds. In this scenario, all 6 atoms of element A and all 8 atoms of element B are used to form the 6 compound particles.
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Which of the following is plotted on the y-axis of a distance versus time graph? A.Distance B.Time C.Slope. D.Velocity
Hello,
Question - Which of the following is plotted on the y-axis of a distance versus time graph?
Answer - A. Distance
Why - The reason its distance is because the fact that distance is a dependant variable and always will remian on the y axis.
Compare the type of bonds in metalloids to metal (delocalized) and nonmetal (localized).
1) The type of bond in metalloids to metal is metallic bond.
Metallic bond is a type of chemical bond.
Metallic bond is formed between electrons and positively charged metal ions.
Metallic radius is defined as one-half of the distance between the two adjacent metal ions.
Metallic bond increace electrical and thermal conductivity.
Metals conduct heat, because when free moving electrons gain energy (heat) they vibrate more quickly and can move around.
2) The type of bond in nonmetal is covalent bond.
Nonmetals have low electrical and thermal conductivity.
Which activity best demonstrates Ernest Rutherford’s creativity?
with his well-known gold foil experiment in which he demonstrated that the atom has a tiny and heavy nucleus.
Ernest Rutherford's most creative activity was his gold foil experiment conducted in 1909. This experiment demonstrated the structure of an atom, challenging existing models and earning Rutherford the title of 'father of nuclear physics'.
Explanation:The activity that best demonstrates New Zealand physicist Ernest Rutherford's creativity is his gold foil experiment conducted in 1909. In this groundbreaking experiment, Rutherford and his colleagues bombarded a thin sheet of gold foil with a beam of high-energy alpha particles obtained from radioactive decay of radium. He then observed the subsequent velocities and trajectories of the particles, a method that led to revelations about the nuclear structure of the atom.
Rutherford's experimental design illuminated the small and dense nature of atomic nuclei. Rutherford placed a radioactive source in a lead container, producing a beam of alpha particles that struck a thin gold foil. The scattering of the alpha particles, observed by the glow they caused when they hit a phosphorescent screen, challenged existing beliefs about atomic structure. His seminal experiments with nuclear radiation and atomic structure earned him the title of "father of nuclear physics" and helped him win a Nobel Prize in Chemistry in 1908.
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The molecule CCl4 contains one double bond and three single bonds.
Answer is: false, carbon tetrachloride contains four single bonds.
Carbon tetrachloride or tetrachloromethane (CCl₄) is an organic nonpolar compound.
Electron configuration of carbon atom: ₆C 1s² 2s² 2p².
Electron configuration of chlorine atom: ₁₇Cl 1s² 2s² 2p⁶ 3s² 3p⁵.
Chlorine atoms have one unpaired electron, carbon atom is sp3 hybridized (has four unpaired electrons).
False, The molecule CCl4 contains only four single bonds.
Explanation:There are only four single covalent bonds in CCl4. One carbon atom makes 4 covelent bonds with 4 chlorine atoms.How many moles of ammonia, NH3, can be made from 7.5 moles of H2? N2 + 3H2 → 2NH3 A. 15 moles B. 22 moles C. 5 moles
The reaction will produce C. 5 mol NH₃.
N₂ + 3H₂ ⟶ 2NH₃
Moles of NH₃= 7.5 mol H₂ × (2 mol NH₃/3 mol H₂) = 5 mol NH₃
5 moles of ammonia, [tex]NH_3[/tex], can be made from 7.5 moles of [tex]H_2[/tex].
What is a mole?The mole is an SI unit used to measure the amount of any substance. The abbreviation for a mole is mol. One mole is exactly 6.02214076×[tex]10^{23}[/tex] particles.
Given data:
Moles of H₂ react = 7.5 mol
Moles of NH₃ formed =?
Chemical equation:
N₂ + 3H₂ → 2NH₃
Now we will compare the moles of ammonia with hydrogen.
H₂ : NH₃
3 : 2
7.5 : [tex]\frac{2 X 7.5}{3}[/tex] = 5
Hence, 5 moles of ammonia would be formed from 7.5 moles of hydrogen.
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What is the geocentric model? What is the heliocentric model? What observations and questions were asked that the geocentric model could not explain? Why is the heliocentric model not correct? What parts of the geocentric model were incorporated into the heliocentric model? What are the two main factors that affect gravity’s influence? What is Newton’s law of universal gravitation? The three things to remember about gravitational forces in space are: 1. 2. 3.
Answer:
1. A model in the universe in which the sun, moon, stars, and planets all revolve around Earth.
2. Why did stars and planets get brighter at different times of the year if they were all moving in perfect circles around the earth? Why do some planets seem to stop and reverse direction in the sky?
3. Not all astronomical bodies revolve around Earth. Only the moon orbits earth, but that's all. In fact, Earth revolves around the sun just like all the other planets.
4. The parts about the planets revolving around something and the fact that they revolve.
5. Mass and distance.
6. The law of universal gravitation states that every mass attracts other masses with a force that is directly proportional to the product of the two masses and is inversely proportional to the square of the distance separating them.
7.
1. All objects with mass (no matter how small) exert a gravitational attraction.
2. The more massive an object is, the stronger its gravitational force.
3. The greater the distance between the objects, the weaker the gravitational force.
Explanation:
what are the limitations of the Klmn electronic configuration style of writing
In the KLMN electronic configuration style of writing K denotes the first shell which can hold up to two electrons, L denotes the second shell which can hold up to eight (2 + 6) or 8 electrons, M denotes the third shell which can hold up to eight (2 + 6 + 10) or 18 electrons etc.
The KLMN style of writing only indicates the number of electrons in each principal quantum number, however the spdf electronic configuration style of writing subdivides each shell into its subshells.
For instance the 3rd principal quantum number has s,p and d subshells, wherein s, p and d orbitals can have a maximum of 2, 6 and 10 electrons respectively.
Please help so I can study I am also giving brainest anwer
What happens when metals and nonmetals react?
No electrons are shared or move.
Electrons move from the metals to the nonmetals.
Electrons move from the nonmetals to the metals.
Electrons are shared equally.
B. Electrons move from metals from nonmetals creating ionic compounds.
minerals with the silicon-oxygen structure shown in Figure 2-1 are classified into what group?
A. Sulfates
B. oxides
C. carbonates
D. silicates
What is the independent variable in patty experiment
drug testing if a person do not use drugs how cam he test positive on hair drug test
For example, certain medications may influence the results of the test.
Drug test can show the presence of illicit or prescription drugs on hair samples, although the person has not used these drugs.
Some of false positive drug use is because of this medications: antihistamines, decongestants, antibiotics, antidepressants, analgesics and antipsychotics.
False positives in hair drug tests can occur due to cross-reactivity with medications, passive exposure, external contamination, and handling errors. Confirmatory testing with GC-MS is suggested after a positive result. The reliability of a test also depends on laboratory standards and procedures.
Explanation:False positives in hair drug tests can occur for a variety of reasons. These tests are designed to detect the presence of drugs and their metabolites in the hair. However, sometimes substances that have a similar chemical structure to those being tested for can interfere with the results, leading to a false positive.
Cross-reactivity with other medications, passive exposure to drugs, external contamination, and even errors in the handling or processing of the hair sample can result in an inaccurate test outcome. It's also possible for hair products or treatments to affect the test. If someone receives a positive result but has not used drugs, they should request a confirmatory test, like gas chromatography-mass spectrometry (GC-MS), which can provide a more accurate result.
Furthermore, drug test accuracy can depend on the standards and procedures of the testing lab. Factors such as how the hair is washed and the cutoff levels for a positive result can vary between labs, affecting the test's reliability. It's important to ensure that drug testing is conducted by a reputable and certified laboratory to minimize the likelihood of a false positive.
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5 physical properties of all matter
color
density
volume
mass
boiling point
melting point
Which process transfers heat from a hot pavement to a person sitting on it?
conduction - the transfer of heat to an object through contact
Answer: Conduction
Explanation:
what are the rules for writing the symbols of an elements
Hello!
Each element on the periodic table ALWAYS begins with an UPPERCASE letter, for example, hydrogen is written as H.
If the element has two letters, for example lithium, then the first letter is UPPERCASE, and the next letter is LOWERCASE. This is shown as Li.
If there's two or more elements (also known as a compound), (ex. sodium chloride), then it follows the same rules, the first letter is in UPPERCASE and next letter is LOWERCASE, but when a new element is introduced (in this case chlorine), the first letter is UPPERCASE and the next letter in LOWERCASE. Sodium is Na and Chlorine is Cl. As a compound it is NaCl, and it's name is sodium chloride.
Basic rules:
First letter of any element is UPPERCASESecond letter of any element is LOWERCASE If it is a compound, then each different element follows the rules like 1 and 2The rules for writing the symbols of elements in chemistry are based on abbreviations derived from common names or other languages, with most symbols having one or two letters. The first letter of the symbol is capitalized to avoid confusion with other notations.
Explanation:The rules for writing the symbols of elements in chemistry are as follows:
A chemical symbol is an abbreviation used to indicate an element or an atom of an element.Most symbols have one or two letters, but three-letter symbols are used for elements with atomic numbers greater than 112.Only the first letter of a symbol is capitalized to avoid confusion with other notations.The symbols of some elements are derived from their common names, while others are abbreviations of the name in another language or Latin.Learn more about Chemical Symbols here:https://brainly.com/question/9249660
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Round off the measurement 0.0070857 m to three significant figures
How many moles are there in 24.0 grams of FeF3
Hey there!:
Molar mass FeF3 = 112.84 g/mol
Number of moles = mass of solute / molar mass
Number of moles = 24.0 / 112.84
Number of moles = 0.212 moles of FeF3
Hope that helps!
What state of matter can be compressed?
A. Solids
B. Liquids
C. Gases
D. Solids, Liquids, and Gases
A. Gases
The state of matter that can be compressed is gas.
Answer:
Gases (C)
Explanation:
I took the test
Nancy wants to find out how the steepness of a hill's slope affects the amount of soil that erodes from it. She has soil, a long pan, and a pile of books with which to build a model hillside. She has a watering can to model rainfall. In her experiment, which of the following factors should Nancy make sure that she does not change?
As from the given information Nancy's aim is to find the steepness of a hill's slope which will affect the amount of soil that erode from the surface so, the variable that should not be changed in this experiment should be the height of the long pan. The height of the long pan is made using the blocks of books on which the end of the pan is balanced. This should remain uniform and constant throughout the experiment so that other variables of the experiment can be altered and the results can be verified accordingly.
Answer:the amount of water she pours on the model
Explanation:
Select the correct answer. A sealed bottle is full of air. The volume of the bottle is decreased, but the temperature remains constant. What other change occurs in the bottle? A. The air pressure will increase. B. The air pressure will decrease. C. The number of air molecules will increase. D. The number of air molecules will decrease.
Answer:
The air pressure will increase
Explanation:
The bottle is sealed, therefor the number of molecules can't change. The air inside the bottle may be considered as an ideal gas, and these have a particular set of laws they must obey.
In this case the law that apllies is Boyle's Law, which states that at a constant temperature, the pressure P of a gas varies inversely with its volume V, or P.V = k, where k is a constant.
If the volume is decreasing, the pressure must increase.
Which examples demonstrate responses to stimuli? Check all that apply.
A. A Venus flytrap closes on a fly.
B. Large amounts of bacteria are present in a soil sample.
C. A plant grows toward the sunlight.
D. A rabbit has both white and black fur.
E. Bright lights cause a baby to blink.
Answer:
A.C. and E.
Explanation:
i just got it right so that's it.
Arrange the molecules in order from strongest intermolecular force to weakest.
-C2H6
-C4H10
-CH4
-C3H8
Answer:- [tex]C_4H_1_0>C_3H_8>C_2H_6>CH_4[/tex]
Explanations:- Alkanes are non polar molecules as these only have carbons and hydrogens. Electron negativity difference of C and H is very low and it makes them non polar. These have weaker London dispersion forces.
The forces of attraction becomes stronger in alkanes as the number of carbon increases because the surface area as well as molecular weight of the alkanes increases with an increase in number of carbons.
Butane has four carbons, propane has three carbons, ethane has two and methane has only one carbon, So, the strongest to weakest order of inter molecular forces is butane > propane > ethane > methane .
Answer:
The answer is C4H10-C3H8-C2H6-CH4
Explanation:
100% CORRECT
What is the theoretical yield of Li3N in grams when 12.8 g of Li is heated with 34.9 g of N2?
Answer:- 21.4 grams of [tex]Li_3N[/tex] are formed.
Solution:- The balanced equation is:
[tex]6Li+N_2\rightarrow 2Li_3N[/tex]
From this equation, lithium and nitrogen reacts in 6:1 mol ratio. Limiting reactant gives the theoretical yield of the product. We will calculate the grams of the product for the given grams of both the reactants and see which one of them gives the limited amount of the product. This limited amount of the product will be the theoretical yield.
The molar mass of Li is 6.94 gram per mol and for [tex]N_2[/tex] It is 28.02 gram per mol. The molar mass of [tex]Li_3N[/tex] is 34.83 gram per mol. The calculations for the grams of the product for given grams of both the reactants are shown below:
[tex]12.8gLi(\frac{1molLi}{6.94gLi})(\frac{2molLi_3N}{6molLi})(\frac{34.83gLi_3N}{1molLi_3N})[/tex]
= [tex]21.4gLi_3N[/tex]
[tex]34.9gN_2(\frac{1molN_2}{28.02gN_2})(\frac{2molLi_3N}{1molN_2})(\frac{34.83gLi_3N}{1molLi_3N})[/tex]
= [tex]86.8gLi_3N[/tex]
From above calculations, Li gives least amount of the product. So, 21.4 g of [tex]Li_3N[/tex] are formed.
The theoretical yield of Li3N is 21.58 grams when 12.8 grams of Li is heated with 34.9 grams of N2. This is determined by first identifying the limiting reactant through mol calculations and then using the balanced chemical equation to calculate the theoretical yield.
Explanation:To find the theoretical yield of Li3N, we first need to determine which is the limiting reactant. The balanced chemical equation is: 6Li + N2 -> 2Li3N.
From the periodic table, we find that the molar mass of Li is about 6.94 g/mol, and that of N2 is about 28.01 g/mol. Therefore, we have:
12.8 g Li *(1 mol Li / 6.94 g Li) = 1.845 g Li is approximately 1.85 mol Li34.9 g N2 * (1 mol N2 / 28.01 g N2) = 1.25 mol N2According to the balanced chemical equation, 6 moles of Li react with 1 mole of N2 to produce 2 moles of Li3N. Thus, the actual amount of Li can react with 1.85 / 6 = 0.3 mol N2, which is less than the existing amount of N2. Therefore, Li is the limiting reactant.
According to the reaction equation, 6 mol Li reacts to generate 2 mol Li3N, then 1.85 mol Li will generate 1.85 *(2 / 6) = 0.62 mol Li3N. Given that the molar mass of Li3N is about 34.83 g/mol, the theoretical yield is 0.62 * 34.83 = 21.58 g Li3N. Therefore, the theoretical yield of Li3N is 21.58 grams when 12.8 grams of Li is heated with 34.9 grams of N2.
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PLEASE PICK ONE THE SECOND IMAGE IS AN EXAMPLE! XD
IS THE LAST IMAGE CORRECT
can you tell me what tosay
Well if the candle lost half of its mass, and they are asking where the other half went. Most likely it is still hardened wax because the it says that you're candle lost half of its mass that means half is gone and the other half is still there. The chemical change would be liquid, and the chemical property would be Wax Vapour that is what i found.
-Hope it helps, if it does not help sorry.
How many moles of Boron (B) are in 5.03 x 1024 B atoms?
Hey there!:
Number of moles = ( number of atoms / 6.023*10²³ atoms )
given number of atoms = 5.03*10²⁴
Therefore:
Number of moles B = 5.03*10²⁴ / 6.023*10²³
Number of moles B = 8.35 moles
Hope that helps!
which two elements are most likely to form an ionic bond? krypton and lithium, magnesium and silicon, calcium and potassium, iodine and chlorine
You just found a metallic object in a creek bed. From the following tests and Figure 2, determine what it is.
96.5g will balance the object. Its mass is g.
The object displaces 5 mL of water. Its volume is cm 3.
The density of the object is g/cm 3.
The object you found in the creek is
Answer:
mass: 96.5 g
volume: 5 cm^3
density: 19.3 g/cm^3
The object you found in the creek is a gold nugget
Explanation:
If a mass of 96.5g will balance the object in a pair of scales, then its mass is 96.5 g.
If the object displaces 5 mL of water when you introduce it in some vessel, then its volume is 5 cm^3 (notice that mL and cm^3 are numerically equal).
The density of an object is the quotient between mass and volume, then the density of the object is: 96.5 g/5 cm^3 = 19.3 g/cm^3
From its density it can be deduced that the object is a gold nugget.
The density value can provide clues about the material composing the object, as different substances have different densities.
What is mass, volume and density?Mass: Mass refers to the amount of matter an object contains.
Volume: Volume is the amount of space occupied by an object. It is usually measured in cubic centimeters (cm³) or milliliters (mL). In the given scenario, the object displaces 5 mL of water, indicating that its volume is 5 cm³.
The equation for density is:
Density = Mass / Volume
In the given scenario, the density of the object can be calculated once its mass is determined.
Divide the mass (in grams) of the object by its volume (in cubic centimeters) will give the density (in grams per cubic centimeter, g/cm³).
To identify the object, it would be necessary to compare its density with known densities of various substances. The density value can provide clues about the material composing the object, as different substances have different densities.
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HELP PLEASE !!!!!!!!!!!
Select the electron domain geometry that results in a bent molecular shape. Check all of the boxes that apply.
linear with two atoms and zero lone pairs
trigonal planar with three atoms and zero lone pairs
trigonal planar with two atoms and one lone pair
tetrahedral with three atoms and one lone pair
tetrahedral with two atoms and two lone pairs
Answer:
D
Explanation:
Edge trust me
The electron domain geometries that result in a bent molecular shape are:
Trigonal Planar with two atoms and one lone pairTetrahedral with two atoms and two lone pairsWhat is a bent molecular shape?A bent molecular shape occurs when there are two bonded atoms and one or more lone pairs around the central atom.
A common example of a molecule with a bent shape is water. In a water molecule, the central oxygen atom is bonded to two hydrogen atoms and has two lone pairs of electrons, resulting in a bent molecular shape with a bond angle of approximately 104.5 degrees.
Thus, the shapes are;
Trigonal Planar with two atoms and one lone pair
Tetrahedral with two atoms and two lone pairs.
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What happened to the moon and earth if the sun did not exist
Anything in orbit around the Sun is basically moving fast enough to be in a constant state of freefall towards it. If the planets, for example, suddenly stopped moving they would immediately be pulled towards the Sun and fall into it.
Jena's blueberry-pineapple smoothie measured 200g and was contained in 300ml. What is it's density?
The density of Jena’s smoothie is 0.667 g/mL.
Mass = 200 g
Volume = 300 mL
Density = mass/volume = 200 g/300 mL = 0.667 g/mL
Answer:
rounded it is 0.67 g/ml
Explanation: i took the test it was a bit confusing but i figured it out