Ask Question
29 April, 01:50

How many atoms of hydrogen are present in 2.92 g of water?

+1
Answers (1)
  1. 29 April, 02:00
    0
    The molecular weight of water is 18.01528 g/mol.

    So in 2.92 grams there are 2.92 / 18.01528 = 0.1621 mol of particles.

    1 mol contains 6,02214 * 10^ 23 particles by definition.

    So the nr of H2O molecules is 0.1621 * 6,02214 * 10^23 = 0,9761 * 10^23.

    Every molecule has 2 H atoms, so you have to double that.

    2 * 0,9761 * 10^23 = 1.952 * 10^23.
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “How many atoms of hydrogen are present in 2.92 g of water? ...” in 📗 Chemistry if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers