Stoichiometry

Front

N₂ + 3H₂ → 2NH₃
How many moles of hydrogen are needed to react with 2 moles of nitrogen?

Back

6

Front

2H₂ + O₂ → 2H₂O
How many moles of water can be produced if 8 moles H₂ are used?

Back

8 moles

Front

For the Balanced Reaction: 3 Mg + 1 Fe₂O₃ → 3 MgO + 2 Fe; What is the Ratio of moles of MgO to moles Fe?

Back

3 mol MgO / 2 mol Fe

Front

Cl₂ + 2KBr → Br₂ + 2KCl How many grams of potassium chloride (KCl = 74.55 g/mol) can be produced from 356 g of potassium bromide (KBr = 119 g/mol)?

Back

223 g

Front

CH₄ + 2 O₂ → CO₂ + 2 H₂O
How many moles of carbon dioxide are produced from the combustion of 110 g of CH₄? Options: 13.7 mol, 2.75 mol, 6.11 mol, 6.85 mol

Back

6.85 mol

Front

Fe₂O₃(s) + 3H₂(g) → 2Fe(s) + 3H₂O(l)
How many moles of iron can be made from 6 moles H₂? Options: 4 moles Fe, 6 moles Fe, 9 moles Fe, 2 moles Fe

Back

4 moles Fe

Front

2Al + 3H₂SO₄ -> Al₂(SO₄)₃ + 3H₂
How many grams of aluminum sulfate would be formed if 250g H₂SO₄ completely reacted with aluminum? Options: 0.85 g, 290 g, 450 g, 870 g

Back

290 g

Front

Mole ratios are obtained from the

Back

balanced chemical equation

Front

What is the mole ratio of H₂O to H₃PO₄ in the chemical equation P₄O₁₀ + 6 H₂O --> 4 H₃PO₄? Options: 6:4, 4:6, 1:3, 3:1

Back

6:4

Front

What is the first thing you must do to solve a stoichiometry problem? Options: Write a Balanced Equation, Panic, Write an Unbalanced Equation, Ask for help

Back

Write a Balanced Equation