Al (s) + HBr (aq) → AlBr 3 (aq) + H 2 (g)

2 Al (s) + 6 HBr (aq) → 2 AlBr 3 (aq) + 3 H 2 (g)

Al (s) + HBr (aq) → AlBr 3 (aq) + H 2 (g)

2 Al (s) + 3 HBr (aq) → 2 AlBr 3 (aq) + 3 H 2 (g)

2 Al (s) + 3 HBr (aq) → 2 AlBr 3 (aq) + 2 H 2 (g)

Na (s) + O 2 (g) → Na 2 O (s)

4 Na (s) + O 2 (g) → 2 Na 2 O (s)

2 Na (s) + 2 O 2 (g) → 2 Na 2 O (s)

2 Na (s) + 4 O 2 (g) → 4 Na 2 O (s)

4 Na (s) + 2 O 2 (g) → 2 Na 2 O (s)

C 6 H 14 (g) + O 2 (g) → CO 2 (g) + H 2 O (g)

2 C 6 H 14 (g) + 19 O 2 (g) → 12 CO 2 (g) + 14 H 2 O (g)

2 C 6 H 14 (g) + 17 O 2 (g) → 12 CO 2 (g) + 12 H 2 O (g)

C 6 H 14 (g) + 8 O 2 (g) → 6 CO 2 (g) + 7 H 2 O (g)

2 C 6 H 14 (g) + 19 O 2 (g) → 6 CO 2 (g) + 12 H 2 O (g)

ZnO (s) → Zn (s) + O 2 (g)

2 ZnO (s) → 2 Zn (s) + O 2 (g)

ZnO (s) → 2 Zn (s) + 2 O 2 (g)

2 ZnO (s) → 2 Zn (s) + 2 O 2 (g)

C 2 H 4 (s) + O 2 (g) → CO 2 (g) + H 2 O (g)

C 2 H 4 (s) + 3 O 2 (g) → 2 CO 2 (g) + 2 H 2 O (g)

C 2 H 4 (s) + O 2 (g) → CO 2 (g) + H 2 O (g)

2 C 2 H 4 (s) + 2 O 2 (g) → 2 CO 2 (g) + 2 H 2 O (g)

C 2 H 4 (s) + 2 O 2 (g) → 2 CO 2 (g) + 2 H 2 O (g)

H 2 S (g) + HNO 3 (aq) → H 2 O (l) + NO (g) + S (s)

3 H 2 S (g) + 2 HNO 3 (aq) → 4 H 2 O (l) + 2 NO (g) + 3 S (s)

2 H 2 S (g) + 2 HNO 3 (aq) → 3 H 2 O (l) + 2 NO (g) + 2 S (s)

3 H 2 S (g) + 2 HNO 3 (aq) → 3 H 2 O (l) + 2 NO (g) + 3 S (s)

H 2 S (g) + HNO 3 (aq) → H 2 O (l) + NO (g) + S (s)

C 6 H 12 O 6 (aq) + O 2 (g) → H 2 O (l) + CO 2 (g)

C 6 H 12 O 6 (aq) + 6 O 2 (g) → 6 H 2 O (l) + 6 CO 2 (g)

C 6 H 12 O 6 (aq) + 6 O 2 (g) → H 2 O (l) + 6 CO 2 (g)

C 6 H 12 O 6 (aq) + 2 O 2 (g) → 3 H 2 O (l) + 2 CO 2 (g)

C 6 H 12 O 6 (aq) + O 2 (g) → H 2 O (l) + CO 2 (g)

P 2 O 3 (s) → P (s) + O 2 (g)

2 P 2 O 3 (s) → 4 P (s) + 3 O 2 (g)

2 P 2 O 3 (s) → 4 P (s) + 2 O 2 (g)

2 P 2 O 3 (s) → 2 P (s) + 2 O 2 (g)

P 2 O 3 (s) → P (s) + O 2 (g)

Sb 2 O 5 (s) + HCl (g) → SbCl 5 (s) + H 2 O (g)

Sb 2 O 5 (s) + 10 HCl (g) → 2 SbCl 5 (s) + 5 H 2 O (g)

Sb 2 O 5 (s) + 2 HCl (g) → 2 SbCl 5 (s) + 2 H 2 O (g)

2 Sb 2 O 5 (s) + 5 HCl (g) → SbCl 5 (s) + 5 H 2 O (g)

Sb 2 O 5 (s) + HCl (g) → SbCl 5 (s) + H 2 O (g)

C 5 H 10 (g) + O 2 → CO 2 (g) + H 2 O (g)

2 C 5 H 10 (g) + 15 O 2 → 10 CO 2 (g) + 10 H 2 O (g)

C 5 H 10 (g) + 8 O 2 → 5 CO 2 (g) + 5 H 2 O (g)

C 5 H 10 (g) + O 2 → CO 2 (g) + H 2 O (g)

2 C 5 H 10 (g) + 14 O 2 → 10 CO 2 (g) + 10 H 2 O (g)

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Quiz

•

Chemistry

•

1st - 10th Grade

•

Practice Problem

•

Hard

Used 45+ times

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Al (s) + HBr (aq) → AlBr₃ (aq) + H₂(g)

2 Al (s) + 6 HBr (aq) → 2 AlBr₃ (aq) + 3 H₂ (g)

2 Al (s) + 3 HBr (aq) → 2 AlBr₃ (aq) + 3 H₂ (g)

2 Al (s) + 3 HBr (aq) → 2 AlBr₃ (aq) + 2 H₂ (g)

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Na (s) + O₂ (g) → Na₂O (s)

2 Na (s) + 2 O₂ (g) → 2 Na₂O (s)

2 Na (s) + 4 O₂ (g) → 4 Na₂O (s)

4 Na (s) + 2 O₂ (g) → 2 Na₂O (s)

4 Na (s) + O₂ (g) → 2 Na₂O (s)

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

C₆H₁₄ (g) + O₂ (g) → CO₂ (g) + H₂O (g)

2 C₆H₁₄ (g) + 19 O₂ (g) → 12 CO₂ (g) + 14 H₂O (g)

2 C₆H₁₄ (g) + 17 O₂ (g) → 12 CO₂ (g) + 12 H₂O (g)

C₆H₁₄ (g) + 8 O₂ (g) → 6 CO₂ (g) + 7 H₂O (g)

2 C₆H₁₄ (g) + 19 O₂ (g) → 6 CO₂ (g) + 12 H₂O (g)

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

ZnO (s) → Zn (s) + O₂ (g)

ZnO (s) → 2 Zn (s) + 2 O₂ (g)

2 ZnO (s) → 2 Zn (s) + 2 O₂ (g)

2 ZnO (s) → 2 Zn (s) + O₂ (g)

ZnO (s) → Zn (s) + O₂ (g)

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

C₂H₄ (s) + O₂ (g) → CO₂ (g) + H₂O (g)

C₂H₄ (s) + 3 O₂ (g) → 2 CO₂ (g) + 2 H₂O (g)

2 C₂H₄ (s) + 2 O₂ (g) → 2 CO₂ (g) + 2 H₂O (g)

C₂H₄ (s) + 2 O₂ (g) → 2 CO₂ (g) + 2 H₂O (g)

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

H₂S (g) + HNO₃ (aq) → H₂O (l) + NO (g) + S (s)

2 H₂S (g) + 2 HNO₃ (aq) → 3 H₂O (l) + 2 NO (g) + 2 S (s)

3 H₂S (g) + 2 HNO₃ (aq) → 3 H₂O (l) + 2 NO (g) + 3 S (s)

H₂S (g) + HNO₃ (aq) → H₂O (l) + NO (g) + S (s)

3 H₂S (g) + 2 HNO₃ (aq) → 4 H₂O (l) + 2 NO (g) + 3 S (s)

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

C₆H₁₂O₆ (aq) + O₂ (g) → H₂O (l) + CO₂ (g)

C₆H₁₂O₆ (aq) + 6 O₂ (g) → H₂O (l) + 6 CO₂ (g)

C₆H₁₂O₆ (aq) + 2 O₂ (g) → 3 H₂O (l) + 2 CO₂ (g)

C₆H₁₂O₆ (aq) + 6 O₂ (g) → 6 H₂O (l) + 6 CO₂ (g)

C₆H₁₂O₆ (aq) + O₂ (g) → H₂O (l) + CO₂ (g)

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