Question

How many hydrogen atoms are present in 2.50 moles of h2o?

Answer 1

2 x 2.5 x 6.022 x 1023 = 3.011 x 1024 hydrogen atoms

Answer 2

2.5 MOLES OF WATER CONTAINS $30.11*10^{23}$ ATOMS OF HYDROGEN.

Explanation:

• One mole of every compound contains $6.022*10^{23}$ molecules.
• 1 mole of water contains  $6.022*10^{23}$ molecules of water.
• 2.50 moles of water will contain  $2.5*6.022*10^{23}$ molecules of water.
• Each molecule of water has 2 atoms of hydrogen.
•  $2.5*6.022*10^{23}$ molecules of water will have   $2*2.5*6.022*10^{23}$ atoms of hydrogen.
• The total number of hydrogen atoms in 2.5 moles of water are $30.11*10^{23}$.