Neon has 10 electrons and krypton has 18 electrons which element do you think has a greater chance of forming a momentary dipole and why
Neon (Ne) has a greater chance of forming a momentary dipole due to its completely filled outer electron shell.
Explanation:The element with a greater chance of forming a momentary dipole is neon (Ne). Neon has a completely filled outer electron shell, which makes it inert and less likely to form chemical bonds. This means that when neon interacts with other elements, it can induce temporary dipole moments in the other atoms or molecules, creating momentary attractions between them.
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Suppose there are two known compounds containing generic X and Y. You have a 1.00g sample of each compound. One sample contains .34g of X and the other contains .44g of X. Identify plausible sets of formulas for the two compounds
When ammonium carbonate is heated, water, ammonia, and carbon dioxide are produced. what type of chemical reaction is occurring? write formulas for the reaction products?
Final answer:
Ammonium carbonate decomposes when heated, resulting in water, ammonia, and carbon dioxide. The balanced chemical equation for this reaction is (NH4)2CO3(s) → 2 NH3(g) + CO2(g) + H2O(l). This is an example of a decomposition reaction.
Explanation:
When ammonium carbonate is heated, a decomposition reaction occurs, resulting in the formation of water (H2O), ammonia (NH3), and carbon dioxide (CO2). The balanced chemical equation for this reaction is:
(NH4)2CO3(s) → 2 NH3(g) + CO2(g) + H2O(l)
The formulas for the reaction products are ammonia (NH3), carbon dioxide (CO2), and water (H2O). This chemical equation shows that for each mole of ammonium carbonate heated, two moles of ammonia, one mole of carbon dioxide, and one mole of water are produced.
If a doughnut contains 1.8 moles of sugar (C6H12O6), how many sugar molecules are in a box of one dozen doughnuts?
Answer:
130.1 x 10²³ molecules of sugar
Explanation:
One dozen = 12 donuts
1 doughnut = 1.8 moles of sugar
12 doughnut = (1.8 x 12) moles of sugar = 21.6 moles of sugar
1 mole of any substance contains Avogadro’s number (6.023 x 10²³) of molecules.
1 mole of sugar = 6.023 x 10²³ molecules of sugar
21.6 moles of sugar = (6.023 x 10²³ x 21.6) molecules of sugar
= 130.1 x 10²³ molecules of sugar
Answer:
A.) 130.032 x 10^23
Explanation:
I got it correct on founders edtell
Nonpolar molecules that cluster away from water molecules are called __________ molecules.
Hydrophobic molecules are nonpolar molecules that cluster away from water molecules. They have nonpolar covalent bonds and examples include oil, fats, and waxes.
Explanation:Nonpolar molecules that cluster away from water molecules are called hydrophobic molecules. Hydrophobic molecules typically have nonpolar covalent bonds, which means the electronegativity difference between the bonded atoms is minimal. This leads to an absence of partial charges on the atoms, resulting in overall nonpolarity. Examples of hydrophobic molecules include oil, fats, and waxes.
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Which of the following is the correct name for the compound mgbr2? magnesium bromate magnesium bromide magnesium dibromide magnesium (1) bromide
Final answer:
The correct IUPAC name for MgBr2 is 'magnesium bromide', where 'magnesium' denotes the metal cation and 'bromide' denotes the nonmetal anion with its ending changed to 'ide'.
Explanation:
The correct name for the compound MgBr2 is magnesium bromide. According to the International Union of Pure and Applied Chemistry (IUPAC) system of nomenclature, binary ionic compounds (compounds consisting of a metal and a nonmetal) are named by writing the name of the metal (the cation) followed by the name of the nonmetal (the anion) with its ending changed to 'ide'. In our case, 'Mg' stands for magnesium, and 'Br' stands for bromine; when combined in the compound MgBr2, the bromine becomes bromide. The prefix 'di' is not used in this name because the stoichiometry (the ratio of Mg to Br) is inferred by the charges on the ions; magnesium has a +2 charge and bromine has a -1 charge, so two bromine atoms are required to balance the charge of one magnesium atom.
How does a DNA molecule determine the structure of a specific protein
Final answer:
A protein's structure is determined by its amino acid sequence, which is encoded by the DNA sequence of a gene. The DNA sequence is translated into a protein through a process involving transcription and translation, followed by folding of the amino acid chain into its final structure.
Explanation:
The structure of a protein is critical to its function, and this structure is determined by the sequence of amino acids that make up the protein. This sequence of amino acids is directly dictated by the DNA sequence of a gene.
The process of translating DNA information into the structure of a protein follows the Central Dogma of Molecular Biology, which entails the conversion of DNA code into RNA (transcription), and then RNA into a protein (translation). The amino acid sequence then folds into a three-dimensional structure, which is essential for the protein's function.
Key to understanding this process is recognizing that the DNA sequence is comprised of codons, groups of three nucleotides that correspond to specific amino acids.
Through the actions of ribosomes and transfer RNA molecules, these codons are read and the appropriate amino acids are assembled in the correct order, resulting in a polypeptide chain.
This chain then undergoes folding, sometimes with assistance from other proteins called chaperones, to achieve its final functional form.
When 10.0 mL of the 0.50 M solution is diluted to 100 mL as shown, what is the new concentration?,
In this problem, we are asked to find the new concentration.
So, we use the dilution equation;
M1V1 = M2V2
Where M1 = concentration in molarity (moles/Liters) of the concentrated solution,
V2 =volume of the concentrated solution,
M2 =concentration in molarity of the dilute solution, and
V2 = volume of the dilute solution.
Before substituting the formula, convert the given mL to L since the unit for molarity is (moles/Liter).
Use the conversion factor (1000 mL = 1 L), so:
10.0 mL = 0.01 L
100 mL= 0.1 L
Now, we substitute the given (in liters) to the formula.
(0.50 M) (0.01 L) = M2(0.1 L)
M2 = [(0.50 M) (0.01 L)] / 0.1 L
M2 = 0.05 M
Answer: 0.050
Explanation:
how many grams are in 0.40 mole of NaBH4
Final answer:
To determine the mass of 0.40 mole of NaBH4, calculate the molar mass of NaBH4 and multiply by the number of moles, resulting in 15.136 grams.
Explanation:
To find out how many grams are in 0.40 mole of NaBH4, we need to first calculate the molar mass of NaBH4. This involves adding the atomic masses of sodium (Na), boron (B), and hydrogen (H). The atomic masses are 22.99 g/mol for Na, 10.81 g/mol for B, and 1.01 g/mol for each of the four hydrogen atoms, giving us:
Molar mass of NaBH4 = 22.99 + 10.81 + (4 × 1.01) = 37.84 g/mol.
Now we can calculate the mass by multiplying the number of moles by the molar mass:
Mass = 0.40 moles × 37.84 g/mol = 15.136 grams of NaBH4.
Which planet has a distinctive red spot? A. Mercury B. Venus C. Jupiter D. Mars
Which substance is a mixture? salt gasoline aluminum carbon dioxide
Answer: gasoline
Explanation:
Element is a pure substance which is composed of atoms of similar substances.It can not be decomposed into simpler constituents using chemical reactions.Example: Aluminium [tex]Al[/tex]
Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.It can be decomposed into simpler constituents using chemical reactions. Example: carbon dioxide [tex]CO_2[/tex] and salt [tex]NaCl[/tex]
Mixture is a substance which has two or more components which do not combine chemically and do not have any fixed ratio in which they are present. Example: gasoline which is a mixture of different hydrocarbons.
Answer:
gasoline
Explanation:
Which of the following illustrations show atoms of the same element? (Yellow=electrons, red=protons, gray=neutrons).
How many moles of water are produced from 12.8 moles of oxygen
A chemical bond formed when two atoms share six electrons is a ________ bond; it is best described as ________. a chemical bond formed when two atoms share six electrons is a ________ bond; it is best described as ________.
Explanation:
When there occurs sharing of electrons between two different atoms then bond formed between them is known as a covalent bond.
When only one electron is shared then a single covalent bond is formed.
When only two electrons are shared then a double covalent bond is formed.
When three electrons are shared then a triple covalent bond is formed.
Thus, we can conclude that a chemical bond formed when two atoms share six electrons is a triple bond; it is best described as a covalent bond.
Which statement would be a valid argument in favor of using nuclear power?
Answer:
That it's excessively amazing, that with one present-day atomic vitality the earth as we probably are aware it could be decimated.
I trust this makes a difference!
Explanation:
What type mirror is this?
concave
plane
convex
parabolic
In an experiment, a plant was given __________ containing a heavy isotype of oxygen (18o), and the heavy oxygen atoms were used to make sugar. view available hint(s) in an experiment, a plant was given __________ containing a heavy isotype of oxygen (18o), and the heavy oxygen atoms were used to make sugar. water carbon dioxide chlorophyll oxygen gas
A balloon is first filled with 4.00 moles of hydrogen. then, 2.00 moles of oxygen are added. if the volume was initially 21 l when just the hydrogen was present, what is the volume after the oxygen is added?
The final volume of the balloon after adding oxygen is 21 L.
Explanation:To find the new volume of the balloon after adding oxygen, we can use Avogadro's law, which states that at constant temperature and pressure, equal volumes of gases contain equal numbers of moles. Initially, the balloon is filled with 4.00 moles of hydrogen in a volume of 21 L. When 2.00 moles of oxygen are added, the total number of moles becomes 6.00 moles. Since the hydrogen and oxygen are now mixed together, their volumes must be equal, so the final volume of the balloon is also 21 L.
Consider the chemical equilibrium of the following reaction
CH3COOH mc015-1.jpg CH3COO– (aq) + H+(aq)
What will happen to the chemical equilibrium of the solution if CH3COONa is added?
The equilibrium will shifts to the right.
The equilibrium will shifts to the left.
The equilibrium will be unaffected.
The equilibrium will be lost.,
Answer:
The Equilibrium will shift to the left.
Explanation:
The reaction at equilibrium is as follow,
CH₃COOH ↔ CH3COO⁻ + H⁺
According to Le Chatelier's Principle," When a system (reaction) at equilibrium is subjected to any stress (like change in Concentration, Pressure, Temperature e.t.c) the system (reaction) tends to adjust itself in such a way so as to minimize the effect of that change".
Hence, in above reaction when Sodium Acetate (source of CH₃COO⁻) is added the equilibrium will shift in left side and will decrease the concentration of CH₃COO⁻ions.
Final answer:
The addition of CH₃COONa, which contributes more acetate ions, will result in a leftward shift of the chemical equilibrium of the reaction CH₃COOH ⇌ CH₃COO⁻ (aq) + H⁺(aq), as predicted by Le Chatelier's principle.
Explanation:
When CH₃COONa is added to the solution, the chemical equilibrium of the reaction CH₃COOH ⇌ CH₃COO− (aq) + H⁺(aq) will shift. This is because CH₃COONa disassociates in water to form sodium ions (Na⁺) and acetate ions (CH₃COO⁻). By Le Chatelier's principle, adding more of a product (in this case, CH₃COO⁻) will shift the equilibrium to the left, towards the reactants, to counteract the change. This results in a decrease in the H+ concentration and is known as the common ion effect.
The equilibrium will therefore shift toward the formation of CH₃COOH, causing the concentration of CH₃COO⁻ and H⁺ to be reduced, which is in line with Le Chatelier's principle of equilibrium adjustment.
How to calculate C02 molecules in 5.24x10 -2?
Jasmine is a cook, and she wants to buy new equipment. She is presented with dishes made of copper, clay, plastic, and glass. She selects the copper pot because she does most of her cooking on the stove. Which explains why she most likely chose copper?
PLEASE HELP MEDALS WILL BE AWARDED!!!
To prevent a condition called the “bends”, deep sea divers breathe a mixture containing, in mole percent, 10.0% O2, 10.0% N2 , and 80.0% He.
a. Calculate the molar mass of this mixture.
b. What is the ratio of the density of this gas to that of pure Oxygen?,
(Fe(s)+CuSO4(aq)--FeSO4(aq)+Cu(s) this chemical equation represents a ___________ reaction
Answer : This chemical equation represents a single replacement reaction.
Explanation :
Single replacement reaction : It is defined as the reaction in which the most reactive metal displace the least reactive metal form its solution.
The given balanced chemical reaction is:
[tex]Fe(s)+CuSO_4(aq)\rightarrow FeSO_4(aq)+Cu(s)[/tex]
The given chemical reaction is a single replacement reaction because in this reaction, iron is most reactive metal than the copper. So, iron can displace the copper metal form its solution and it forms iron (II) sulfate and copper as a product.
Hence, the chemical equation represents a single replacement reaction.
Calculate the ratio of effusion rates between helium and radon gases
Answer: The ratio of rate of effusion of helium and radon is 7.45
Explanation:
To calculate the rate of diffusion of gas, we use Graham's Law.
This law states that the rate of effusion or diffusion of gas is inversely proportional to the square root of the molar mass of the gas. The equation given by this law follows the equation:
[tex]\text{Rate of diffusion}\propto \frac{1}{\sqrt{\text{Molar mass of the gas}}}[/tex]
We are given:
Molar mass of Helium = 4.00 g/mol
Molar mass of Radon = 222.1 g/mol
Taking their ratios, we get:
[tex]\frac{Rate_{He}}{Rate_{Rn}}=\sqrt{\frac{M_{Rn}}{M_{He}}}[/tex]
[tex]\frac{Rate_{He}}{Rate_{Rn}}=\sqrt{\frac{222.1}{4.00}}\\\\\frac{Rate_{He}}{Rate_{Rn}}=7.45[/tex]
Hence, the ratio of rate of effusion of helium and radon is 7.45
Fossils provide evidence that
1) Life on earth millions of years ago was more complex than life is today
2) The changes that will occur in species in the future are easy to predict
3)Many species of organisms that lived long ago are now extinct
4)Most species of organisms that lived long ago are exactly same today
How much heat do you need to raise the temperature of 150 g of gasoline from -30oC to -15oC?
SUBSTANCE���������C(J/g-^0C)
WATER ��������� 2.05
IRON ��������� 0.46
ALUMINUM ��������� 0.90
GOLD ��������� 0.13
COPPER ��������� 0.39
AMMONIA (LIQUID)���������4.70
ETHANOL ���������2.44
GASOLINE���������2.22
WATER (LIQUID)���������4.18
WATER (VAPOR)���������2.08
Air (25^0C)���������1.01
OXYGEN���������0.92
HYDROGEN���������14.30
4.68 kJ
5.00 kJ
6.66 kJ
9.40 kJ,
Determine the percent composition by mass of the element carbon in the acetamide compound
Part A (7 points): How many grams of iron (Fe) will be produced if you start with 3.65 liters of carbon monoxide gas (CO) at STP?
Part B (3 points): Jacob performed the above experiment in his chemistry class, and collected 4.23 grams of iron. What is the percent yield?
Fe2O3 + 3 CO --> 2 Fe + 3 CO2
The given balanced chemical equation is,
[tex] Fe_{2}O_{3} + 3CO -->2 Fe (s) + 3CO_{2}(g) [/tex]
Part A:
Converting 3.65 L CO to moles:
[tex] 3.65 L * \frac{1 mol}{22.4 L} = 0.163 mol CO [/tex]
Moles of Fe that will be produced from 0.163 mol CO:
[tex] 0.163 mol CO * \frac{2 mol Fe}{3 mol CO} = 0.1086 mol Fe [/tex]
Mass of Fe = [tex] 0.1086 mol Fe * \frac{55.85 g}{1 mol} = 6.07 g Fe [/tex]
Part B: Actual yield of Fe = 4.23 g Fe.
Theoretical yield = 6.07 g Fe
Percentage yield = [tex] \frac{Actual yield (g)}{Theoretical yield (g)}*100 [/tex]
=69.7 %
#1: When you heat an air-filled balloon, what happens inside with regard to the movement of air molecules?
A. The collisions of air molecules against the wall of the balloon are weaker.
B. The collisions of air molecules against the wall of the balloon are stronger.
C. The collisions of air molecules against the wall of the balloon do not change.
**my answer: B
is that right?? @aaronq :)
A reaction has an equilibrium constant of 6.5×103 at 298 K. At 764K , the equilibrium constant is 0.44.
Find ΔHorxn for the reaction.,
Using the van't Hoff equation and the provided equilibrium constants at two different temperatures, the enthalpy change (ΔHrxn) of the reaction can be calculated.
Explanation:The student wants to find the change in the heat content, or enthalpy change (ΔHrxn), of a reaction given the equilibrium constants at different temperatures. This can be done through the van't Hoff equation, which relates the equilibrium constant (K) to temperature (T) and enthalpy change (ΔHrxn). Using the provided equilibrium constants at 298 K and 764 K, as well as the constants 55.7 x 103J/mol and 8.314 J/mol K, we can set up and solve the van't Hoff equation to calculate ΔHrxn.
The van't Hoff equation is ln(K2/K1) = (-ΔHrxn/R)(1/T1 - 1/T2), where R is the ideal gas constant (8.314 J/mol K). By rearranging for ΔHrxn, we can input the given values for K1, K2, T1, and T2 to determine the enthalpy change for the reaction.