Compositional Stoichiometry Review

Front

What is the empirical formula of a compound containing 18.8% Na, 29.0% Cl, and 52.5% O by mass?

Back

NaClO4

Front

How do you calculate the number of moles from the number of atoms?

Back

Number of moles = Number of atoms / Avogadro's number (6.022 x 10^23)

Front

How many moles are in 4.8 x 10^25 atoms of tungsten (W)?

Back

8.0 x 10^1 mol W

Front

What is the molar mass of SO2?

Back

64 g/mol (32 g/mol for S + 2 x 16 g/mol for O)

Front

What is the total mass in grams of 0.75 mole of SO2?

Back

48 g

Front

What is the relationship between mass and moles?

Back

Mass (g) = Moles x Molar Mass (g/mol)

Front

Which mass contains 6.0 x 10^23 particles?

Back

28 g of silicon

Front

What is the molar mass of gold (Au)?

Back

197 g/mol

Front

Calculate the mass of 3.60 mol of Au.

Back

709 g

Front

What is the definition of stoichiometry?

Back

Stoichiometry is the calculation of reactants and products in chemical reactions.