2. Atoms & Elements

What is the molar mass of magnesium (Mg) atoms?

What is the molar mass of carbon (C)?

How many grams are present in 0.90 mol of Pd (palladium)? (Atomic mass of Pd = 106.42 g/mol)

Which statement is true about the molar mass of chlorine gas (Cl_2)?

In the chemical formula Ca(OH)_2, how many atoms of each element are present in one formula unit?

Which of the following compounds has the largest molar mass?

What mass (in kg) does 5.01 moles of iron (Fe) have? (Molar mass of Fe = 55.85 g/mol)

What is the total number of atoms present in one molecule of Al2(S2O3)3?

Given that the molar mass of CCl_4 is 153.81 g/mol, how many grams of CCl_4 are required to obtain 5.000 mol?

What is the molar mass of (NH_4)_2SO_4?

What is the mass, in grams, of 8.50 × 10^{22} molecules of NH_3?

What is the molar mass of calcium nitrate, Ca(NO_3)_2?

A student weighed 0.550 g of lithium chloride (LiCl). What is the number of moles of LiCl in the sample? (Molar mass of LiCl = 42.39 g/mol)

How many grams are in 11.9 moles of chromium (Cr)? (Atomic mass of Cr = 52.0 g/mol)

An alloy consists of 6 atomic percent Pb and 94 atomic percent Sn. What is the weight percent of Pb in the alloy? (Atomic masses: Pb = 207.2 g/mol, Sn = 118.7 g/mol)