2. Atoms & Elements

What is the molar mass of hydrogen gas (H_2)?

Which of the following is the molar mass of copper (Cu)?

What is the mass, in grams, of 2.15 moles of aluminum (Al)? (Atomic mass of Al = 26.98 g/mol)

What is the mass of 0.560 moles of chlorine gas (Cl_2)?

Which of the following steps correctly describes how to determine the molar mass (formula weight) of NaCl?

Given that the molar mass of H_2O is 18.02 g/mol, how many grams of H_2O are present in 0.20 mol?

Which of the following is the correct molar mass (to two decimal places) of C6H12N?

What is the molar mass of copper (Cu) in grams per mole?

What is the molar mass of molecular fluorine, F_2?

Which one of the following compounds has the smallest molar mass?

How many hydrogen atoms are present in one molecule of hydrochloric acid (HCl)?

What is the molar mass of Mg(NO3)2?

A sample of CaCO3 has a mass of 751 grams. How many total atoms are present in this sample?

A chloride of rhenium contains 63.6% rhenium by mass. What is the empirical formula of this compound?

If you have 17 grams of NaCl, how many moles of NaCl do you have?