Answer:
Hydrogen atoms = [tex]8.33*10^{25}[/tex]
Explanation:
[tex]H_{2}O = 3.10*10^{25}[/tex] molecules
[tex]NH_{3}=7.10*10^{24}[/tex] molecules
1 water molecule has 2 hydrogen atoms
1 ammonia molecule has 3 hydrogen atoms
Hydrogen atoms = 2*(water molecules) + 3(ammonia molecules)
[tex][/tex]
Hydrogen atoms = [tex]2* 3.10*10^{25} + 3*7.10*10^{24}= 8.33*10^{25}[/tex]
