Unit 7 Test Review

What is the gram-formula mass of Ca₃(PO₄)₂?

The gram-formula mass of NO₂ is defined as the mass of

What is the gram-formula mass of (NH₄)₃PO₄?

Given the balanced equation representing a reaction:

2H₂ + O₂ $$\rightarrow$$ 2H₂O + energy

Which mass of oxygen completely reacts with 4.0 grams of hydrogen to produce 36.0 grams of water?

Given the balanced equation representing a reaction:

4NH₃(g) + 5O₂(g) → 4NO(g) + 6H₂O(g)

What is the number of moles of H₂O(g) formed when 2.0 moles of NH₃(g) react completely?

Given the balance equation representing a reaction:

4Al + 3O₂ $$\rightarrow$$ 2Al₂O₃

How many moles of Al(s) react completely with 4.50 moles of O₂(g) to produce 3.00 moles of Al₂O₃(s)?

Given the equation representing a reaction:

2C + 3H₂ → C₂H₆

What is the number of moles of C that must completely react to produce 2.0 moles of C_2H_6?

What is the number of moles of $$CO_2$$ in a 220-gram sample of $$CO_2$$ (gram-formula mass = 44 g/mol)?

What is the number of moles of KF in a 29-gram sample of the compound?

Determine the mass of 5.20 moles of C₆H₁₂ (gram-formula mass = 84.2 grams/mole).