Mole-Mass and Mass-Mass Calculations

QUESTION

ANSWER

What mass of CO₂ is produced by the combustion of 1.00 mol of CH₄?

CH₄(g) + 2O₂(g) → CO₂(g) + 2H₂O(ℓ)

44.0 g

What mass of HgO is required to produce 0.692 mol of O₂?

2HgO(s) → 2Hg(ℓ) + O₂(g)

3.00 × 10² g

How many moles of Al can be produced from 10.87 g of Ag?

Al(NO₃) ₃(s) + 3Ag → Al + 3AgNO₃

0.0336 mol

How many moles of O₂ are needed to prepare 1.00 g of Ca(NO₃)₂?

Ca(s) + N₂(g) + 3O₂(g) → Ca(NO₃) ₂(s)

0.0183 mol

What mass of O₂ can be generated by the decomposition of 100.0 g of NaClO₃?

2NaClO₃ → 2NaCl(s) + 3O₂(g)

45.1 g

11.

What mass of Fe₂O₃ must be reacted to generate 324 g of Al₂O₃?

Fe₂O₃(s) + 2Al(s) → 2Fe(s) + Al₂O₃(s)

11.

507 g

13.

What mass of MnO₂ is produced when 445 g of H₂O are reacted?

H₂O(ℓ) + 2MnO₄⁻(aq) + Br⁻(aq) → BrO₃⁻(aq) + 2MnO₂(s) + 2OH⁻(aq)

13.

4.30 × 10³ g

15.

If 83.9 g of ZnO are formed, what mass of Mn₂O₃ is formed with it?

Zn(s) + 2MnO₂(s) → ZnO(s) + Mn₂O₃(s)

15.

163 g

17.

If 88.4 g of CH₂S are reacted, what mass of HF is produced?

CH₂S + 6F₂ → CF₄ + 2HF + SF₆

17.

76.7 g