In N H 3 : 3 Hydrogen + 1 Nitrogen atom
[tex]3 * 7 * 10 ^{24}= 21 * 10^{24} = 2.1 * 10 ^{25} [/tex]
In H 2 O : 2 Hydrogen + 1 Oxygen atom
[tex]2 * 1.8 * 10 ^{25} = 3.6 * 10 x^{25} [/tex]
Total Hydrogen atoms:
[tex]2.1 * 10 ^{25} +3.6 * 10 ^{25} = 5.7 * 10 ^{25} [/tex]
