If 10 volumes of H2 gas react with 5 volumes of O2 gas, the volumes of water vapor produced would be:

1. 9

2. 8

3. 10

4. 11

Subtopic:  Equation Based Problem |
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The mass of CaCO3 required to react completely with 25 mL of 0.75 M HCl according to the given reaction would be:

CaCO3(s) + HCl(aq) ➡ CaCl2(aq) + CO2(g) + H2O(l)

1. 0.36 g

2. 0.09 g

3. 0.96 g

4. 0.66 g

Subtopic:  Concentration Based Problem | Equation Based Problem |
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Amount of HCl that would react with 5.0 g of manganese dioxide, as per the
given reaction will be:

4HCl(aq) + MnO2(s) ➡ 2H2O(l) + MnCl2(aq) + Cl2(2)

1. 4.8 g

2. 6.4 g

3. 2.8 g

4. 8.4 g

Subtopic:  Equation Based Problem |
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