Question

Through the complete electrolysis of a sample of pure water, a student collects 14.0 grams of hydrogen gas and 112.0 grams of oxygen gas. What mass of water (in grams), if it reacted completely, was initially present

Answer 1

Answer:

 Mass of water undergone electrolysis = 126 gram

Explanation:

  By law of conservation of mass, mass cannot be destroyed or created.

  So,  initial mass =  final mass

  Electrolysis of a sample of pure water, a student collects 14.0 grams of hydrogen gas and 112.0 grams of oxygen gas

  So final mass = 14+112 = 126 gram =Initial mass

 Mass of water undergone electrolysis = 126 gram