Exam 9: Stoichiometry and the Mole

(NH₄)₄Fe(CNO)₆ has 36 atoms per formula unit.

Match each compound with its corresponding percent of nitrogen. -N?O

If 5.0 moles of ammonia is produced, then the number of hydrogen molecules consumed is ________. N₂ + 3 H₂ → 2 NH₃

Determine the amount of carbon (in grams) present in 0.525 grams of benzoic acid (C₇H₆O₂).

Which of the following quantities does not share the same molar mass as the others when rounded to the nearest whole number?

14 g of nitrogen will yield ________ g of nitrogen dioxide. N₂ + 2 O₂ → 2 NO₂

Which of the following contains the least number of atoms?

The balanced equation involves the corresponding coefficients ________. C₂H₆O + O₂ → CO₂ + H₂O

When 10 moles of hydrogen and 10 moles of oxygen are mixed to produce water, the limiting reagent is hydrogen.

Which of the following compounds has its nitrogen composition equal to 29.2%?

Determine the number of grams of copper present in a 4.0 kg sample of the mineral chalcopyrite (CuFeS₂).

The empirical formula of laughing gas that contains 63.6% N and 36.4% O is N₂O.

Two moles of hydrogen react with excess nitrogen to produce ________ moles of ammonia.. N₂ + 3 H₂ → 2 NH₃

Which of the following compounds has its sulfur composition equal to 18.6%?

The theoretical number of moles of water produced from 8 moles of NaHCO₃ is ________. NaHCO₃ → Na₂CO₃ + CO₂ + H₂O

Determine the amount of oxygen present (in grams) in 1.00 grams of the artificial sweetener aspartame (C₁₄H₁₈N₂O₅).

Which has more ions-2.0 moles of AL₂(SO₄)₃ or 3.0 moles of Na₃PO₄?

The mass of CaCL₂ that contains 17.8 g of chlorine is ________.

A sample of methane gas that contains Avogadro's number of molecules has a mass of ________.

What is the molar mass of a compound X if 0.0400 moles weigh 21.6 g?