How much silicon is needed to react with 38.08 liters of oxygen?

univerkov | February 11, 2021 | education

1. Let’s calculate the chemical amount of oxygen:

n (O2) = V (O2): Vm = 38.08: 22.4 = 1.7 mol;

2. Set the amount of silicon that went into the reaction:

n (Si) = n (O2) = 1.7 mol;

3. Calculate the mass of silicon:

m (Si) = n (Si) * M (Si) = 1.7 * 28 = 47.6 g.

Answer: 47.6 g.

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