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Oxidation of a hydrocarbon gave a product composed of carbon, hydrogen, and oxygen.The product that was purified and sent off for elemental analysis giving the following mass percents: 68.85% C and 4.95% H.Determine the empirical formula of this compound.

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What is the minimum mass of oxygen gas necessary to produce 200.g of sulfuric acid in the following reaction? 2SO2 + O2 + 2 H2O →\rarr 2H2SO4

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How many fluorine atoms are there in 65 g of CF4?


A) 0.74 atoms
B) 3.0 atoms
C) 4.5 * 1023 atoms
D) 1.8 * 1024 atoms
E) 2.4 * 1023 atoms

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The mass of 1.21 * 1020 atoms of sulfur is


A) (3.88 * 1021 g.)
B) 2.00 mg.
C) 32.06 g.
D) 6.44 mg.
E) (2.00 * 10-4 g.)

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There are two stable isotopes of chlorine: chlorine-35, with a mass of 34.968853 amu; and chlorine-37, with a mass of 36.965903.Given that the average atomic mass of a chlorine atom is 35.45 amu, which of the following statements is true?


A) Chlorine contains almost exclusively of There are two stable isotopes of chlorine: chlorine-35, with a mass of 34.968853 amu; and chlorine-37, with a mass of 36.965903.Given that the average atomic mass of a chlorine atom is 35.45 amu, which of the following statements is true? A) Chlorine contains almost exclusively of , with very little Cl. B) Chlorine contains more Cl than Cl. C) Chlorine contains roughly equal amounts of Cl and Cl. D) Chlorine contains more Cl than Cl. E) Chlorine contains almost exclusively of Cl, with very little Cl. , with very little There are two stable isotopes of chlorine: chlorine-35, with a mass of 34.968853 amu; and chlorine-37, with a mass of 36.965903.Given that the average atomic mass of a chlorine atom is 35.45 amu, which of the following statements is true? A) Chlorine contains almost exclusively of , with very little Cl. B) Chlorine contains more Cl than Cl. C) Chlorine contains roughly equal amounts of Cl and Cl. D) Chlorine contains more Cl than Cl. E) Chlorine contains almost exclusively of Cl, with very little Cl. Cl.
B) Chlorine contains more There are two stable isotopes of chlorine: chlorine-35, with a mass of 34.968853 amu; and chlorine-37, with a mass of 36.965903.Given that the average atomic mass of a chlorine atom is 35.45 amu, which of the following statements is true? A) Chlorine contains almost exclusively of , with very little Cl. B) Chlorine contains more Cl than Cl. C) Chlorine contains roughly equal amounts of Cl and Cl. D) Chlorine contains more Cl than Cl. E) Chlorine contains almost exclusively of Cl, with very little Cl. Cl than There are two stable isotopes of chlorine: chlorine-35, with a mass of 34.968853 amu; and chlorine-37, with a mass of 36.965903.Given that the average atomic mass of a chlorine atom is 35.45 amu, which of the following statements is true? A) Chlorine contains almost exclusively of , with very little Cl. B) Chlorine contains more Cl than Cl. C) Chlorine contains roughly equal amounts of Cl and Cl. D) Chlorine contains more Cl than Cl. E) Chlorine contains almost exclusively of Cl, with very little Cl. Cl.
C) Chlorine contains roughly equal amounts of There are two stable isotopes of chlorine: chlorine-35, with a mass of 34.968853 amu; and chlorine-37, with a mass of 36.965903.Given that the average atomic mass of a chlorine atom is 35.45 amu, which of the following statements is true? A) Chlorine contains almost exclusively of , with very little Cl. B) Chlorine contains more Cl than Cl. C) Chlorine contains roughly equal amounts of Cl and Cl. D) Chlorine contains more Cl than Cl. E) Chlorine contains almost exclusively of Cl, with very little Cl. Cl and There are two stable isotopes of chlorine: chlorine-35, with a mass of 34.968853 amu; and chlorine-37, with a mass of 36.965903.Given that the average atomic mass of a chlorine atom is 35.45 amu, which of the following statements is true? A) Chlorine contains almost exclusively of , with very little Cl. B) Chlorine contains more Cl than Cl. C) Chlorine contains roughly equal amounts of Cl and Cl. D) Chlorine contains more Cl than Cl. E) Chlorine contains almost exclusively of Cl, with very little Cl. Cl.
D) Chlorine contains more There are two stable isotopes of chlorine: chlorine-35, with a mass of 34.968853 amu; and chlorine-37, with a mass of 36.965903.Given that the average atomic mass of a chlorine atom is 35.45 amu, which of the following statements is true? A) Chlorine contains almost exclusively of , with very little Cl. B) Chlorine contains more Cl than Cl. C) Chlorine contains roughly equal amounts of Cl and Cl. D) Chlorine contains more Cl than Cl. E) Chlorine contains almost exclusively of Cl, with very little Cl. Cl than There are two stable isotopes of chlorine: chlorine-35, with a mass of 34.968853 amu; and chlorine-37, with a mass of 36.965903.Given that the average atomic mass of a chlorine atom is 35.45 amu, which of the following statements is true? A) Chlorine contains almost exclusively of , with very little Cl. B) Chlorine contains more Cl than Cl. C) Chlorine contains roughly equal amounts of Cl and Cl. D) Chlorine contains more Cl than Cl. E) Chlorine contains almost exclusively of Cl, with very little Cl. Cl.
E) Chlorine contains almost exclusively of There are two stable isotopes of chlorine: chlorine-35, with a mass of 34.968853 amu; and chlorine-37, with a mass of 36.965903.Given that the average atomic mass of a chlorine atom is 35.45 amu, which of the following statements is true? A) Chlorine contains almost exclusively of , with very little Cl. B) Chlorine contains more Cl than Cl. C) Chlorine contains roughly equal amounts of Cl and Cl. D) Chlorine contains more Cl than Cl. E) Chlorine contains almost exclusively of Cl, with very little Cl. Cl, with very little There are two stable isotopes of chlorine: chlorine-35, with a mass of 34.968853 amu; and chlorine-37, with a mass of 36.965903.Given that the average atomic mass of a chlorine atom is 35.45 amu, which of the following statements is true? A) Chlorine contains almost exclusively of , with very little Cl. B) Chlorine contains more Cl than Cl. C) Chlorine contains roughly equal amounts of Cl and Cl. D) Chlorine contains more Cl than Cl. E) Chlorine contains almost exclusively of Cl, with very little Cl. Cl.

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What is the average mass, in grams, of one atom of iron?


A) 6.02 * 1023 g
B) 1.66 * 10-24 g
C) 9.28 * 10-23 g
D) 55.85 g
E) 55.85 * 10-23 g

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Balance the following equation using the smallest set of whole numbers, then add together the coefficients.Don't forget to count coefficients of one.The sum of the coefficients is ___ Cr + ___ H2SO4 →\rarr ___ Cr2(SO4) 3 + ___ H2


A) 4.
B) 9.
C) 11.
D) 13.
E) 15.

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Calculate the molecular mass, in g/mol, of P4O10.

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