CP Stoichiometry Review

Front

What is the formula to calculate the number of moles from mass?

Back

Number of moles = mass (g) / molar mass (g/mol)

Front

What is the molar mass of water (H₂O)?

Back

18 g/mol

Front

How many moles are in 16.94g of water?

Back

0.9401 mol H₂O

Front

What is the balanced equation for the combustion of methane (CH₄)?

Back

CH₄ + 2 O₂ → CO₂ + 2 H₂O

Front

How many moles of carbon dioxide are produced from the combustion of 110 g of CH₄?

Back

6.85 mol CO₂

Front

What is the molar mass of potassium hydroxide (KOH)?

Back

56 g/mol

Front

How do you calculate the mass of a substance from moles?

Back

Mass (g) = number of moles × molar mass (g/mol)

Front

Given the reaction 2NaClO₃ (s) → 2NaCl (s) + 3O₂ (g), how many grams of O₂ are produced from 2.00 moles of NaClO₃?

Back

96 g O₂

Front

What is the molar mass of oxygen (O₂)?

Back

32 g/mol

Front

In the reaction 2Na + 2H₂O → 2NaOH + H₂, how many grams of hydrogen are produced if 120 g of Na are available?

Back

5.27 g H₂