When oxygen is mixed with hydrogen, an explosive gas is formed: when it explodes, water is formed.

When oxygen is mixed with hydrogen, an explosive gas is formed: when it explodes, water is formed. What is the number of oxygen and hydrogen molecules in an explosive gas if, as a result of its explosion, 10 ^ 20 water molecules are formed?

10 ^ 20 hydrogen molecules; 5 * 10 ^ 19 oxygen molecules.

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