Calculate the mass of water that was formed during the combustion of 10 g of hydrogen.

univerkov | August 14, 2021 | education

Given:
m (H2) = 10 g

To find:
m (H2O) -?

1) 2H2 + O2 => 2H2O;
2) n (H2) = m / M = 10/2 = 5 mol;
3) n (H2O) = n (H2) = 5 mol;
4) m (H2O) = n * M = 5 * 18 = 90 g.

Answer: The mass of H2O is 90 g.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.