Question

A solution of ammonia and water contains 3.10×1025 water molecules and 7.10×1024 ammonia molecules. How many total hydrogen atoms are in this solution?

Answer 1

Answer:

Hydrogen atoms = $8.33*10^{25}$

Explanation:

$H_{2}O = 3.10*10^{25}$ molecules

$NH_{3}=7.10*10^{24}$ molecules

1 water molecule has 2 hydrogen atoms

1 ammonia molecule has 3 hydrogen atoms

Hydrogen atoms = 2*(water molecules) + 3(ammonia molecules)

Hydrogen atoms = $2* 3.10*10^{25} + 3*7.10*10^{24}= 8.33*10^{25}$