2. Atoms & Elements

What is the molar mass of sodium (Na)?

What is the molar mass of pure tin (Sn)?

What is the molar mass (formula weight) of Ca(NO3)2? Provide your answer to two decimal places.

How many carbon atoms are present in 15.0 grams of graphite (pure carbon)? (Atomic mass of carbon = 12.01 g/mol)

Which of the following is the molar mass of 1 mol of carbon (C)?

What is the molar mass of hydrochloric acid (HCl)?

A compound has a molar mass of 180 g/mol and the following composition by mass: 40.0% C, 6.7% H, and 53.3% O. What is the molecular formula of the compound?

1 mole of which of the following will have the largest mass?

Which of the following is the correct molar mass of calcium carbonate (CaCO_3)?

How many molecules of sulfur trioxide (SO_3) are present in a 78.0 g sample?

What is the mass, in grams, of 8 moles of sodium chloride (NaCl)?

What is the molar mass of calcium carbonate (CaCO_3)?

A 500. mL flask is filled with 2.00 g of an unknown gas at standard temperature and pressure (STP). What is the molar mass of the gas?

What is the mass in grams of a single molecule of sucrose (C_{12}H_{22}O_{11})?

Given that a sample of an element has a mass of 10.4 grams and contains 0.129 moles, what is the molar mass of the element?