Stoichiometry

4 Al + 3 O₂ –> 2 Al₂O₃

How many moles of aluminum would be needed to react with 45 grams of O₂?

• 1.054 mol Al

• 3.75 mol Al

• 5.626 mol Al

• 1.875 mol Al

2 H₂ + O₂ → 2 H₂O

How many moles of water can be produced if 8 moles of H₂ are reacted?

• 4 mol H₂

• 8 mol H₂

• 16 mol H₂

• 2 mol H₂

Cl₂ + 2 KBr → Br₂ + 2 KCl

How many grams of potassium chloride (KCl) can be produced from 356 g of potassium bromide (KBr)?

• 111.51 g KCl

• 223.023 g KCl

• 446.046 g KCl

• 356.0 g KCl

CH₄ + 2 O₂ → CO₂ + 2 H₂O

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

• 13.7 mol CH₄

• 2.75 mol CH₄

• 6.11 mol CH₄

• 6.85 mol CH₄

2 Fe + Pb(NO₃)₂ --> 2 FeNO₃ + Pb

How many grams of Pb(NO₃)₂ are needed to react with 2.5 moles of Fe?

• 336.505 g Pb(NO₃)₂

• 414.01 g Pb(NO₃)₂

• 0.003774 g Pb(NO₃)₂

• 1656.04 g Pb(NO₃)₂