Full stoich practice

Quiz Review

2 Fe + 3 CuSO₄ -> Fe₂(SO₄)₃ + 3 Cu

2 moles of Fe will produce how many grams of Fe₂(SO₄)₃ ?

(mm: 399.88 g/mol)

• Step 1: moles Fe -> moles Fe₂(SO₄)₃

• Step 2: moles Fe₂(SO₄)₃ -> grams Fe₂(SO₄)₃

Multiple Choice

2 LiOH + CO₂ -> Li₂CO₃ + H₂O

0.14 moles of LiOH will produce how many grams of Li₂CO₃ (73.891 g/mol)?

• 0.07 g

• 5.17 g

• 10.34 g

• 20.69 g

Multiple Choice

2 NaClO₃ -> 2 NaCl +3 O₂

12.00 moles of NaClO₃ will produce how many grams of O₂ (32 g/mol)?

• 256 g O₂

• 576 g O₂

• 288 g O₂

• 520 g O₂

Cl₂ + 2KBr → Br₂ + 2KCl

45 grams of KBr (119.002 g/mol) would produce how many moles of Br₂ ?

• Step 1: grams KBr -> moles KBr

• Step 2: moles KBr -> moles Br2

Multiple Choice

2 Fe + 3 CuSO₄ -> Fe₂(SO₄)₃ + 3 Cu

If 56g of Fe (56 g/mol) are added to CuSO₄, how many moles of Cu will form?

• 1.0 moles

• 1.5 moles

• 2.0 moles

• 3.0 moles

Multiple Choice

4 Al + 3 O₂ –> 2 Al₂O₃

_How many moles of aluminum would be needed to completely react with 45 grams of O₂ (32 g/mol) ?

• 1.05 moles

• 3.75 moles

• 1.475 moles

• 1.875 moles

2 LiOH + CO₂ -> Li₂CO₃ + H₂O

How many grams of Li₂CO₃ (73.891 g/mol) are produced from 100.0 grams of LiOH (23.95 g/mol)?

• Step 1: grams LiOH -> moles LiOH

• Step 2: moles LiOH -> moles Li₂CO₃

• Step 3: moles Li₂CO₃ -> grams Li₂CO₃

Multiple Choice

For the reaction Cl₂ + 2 KBr → Br₂ + 2 KCl, 356 grams of KBr (119 g/mol) will produce how many grams of KCl (74.55 g/mol)?

• 749 g

• 225 g

• 479 g

• 814 g

Multiple Choice

2 Al + 3 H₂SO₄ -> Al₂(SO₄)₃ + 3 H₂

How many grams of Al₂(SO₄)₃ (342.15 g/mol) would be formed if we started with 250g H₂SO₄ (98.08 g/mol) ?

• 0.85 g

• 290 g

• 450 g

• 870 g

Multiple Choice

2 Na + 2 H₂O → 2 NaOH+ H₂

How many grams of hydrogen are produced if 120 g of Na are available?

• 5.2 g

• 2.6 g

• 690 g

• 45 g

Multiple Choice

C₆H₁₂ + 9 O₂ 🡪 6 CO₂ + 6 H₂O

How many grams of carbon dioxide are needed to produce 1800 g of C₆H₁₂?

• 53 g

• 919 g

• 5515 g

• 10241 g