Calculate the amount of substance and the mass of water, which is formed during the explosion

Calculate the amount of substance and the mass of water, which is formed during the explosion of a mixture of hydrogen with a mass of 2 g and oxygen.

1. The reaction that occurs during the explosion of a mixture of hydrogen and oxygen is described by the equation:

2H2 + O2 = 2H2O.

2. Let’s calculate the chemical amount of hydrogen:

n (H2) = m (H2): Mr (H2) = 2: 2 = 1 mol.

3. Set the amount of formed water:

n (H2O) = n (H2) = 1 mol.

4. Let’s calculate the mass of the resulting water:

m (H2O) = n (H2O) * Mr (H2O) = 1 * 18 = 18 g.

Answer: 1 mole, 18 g.