Question

72 grams of H20 to molecules H2O

Answer 1

hay mate here is your answer
atomic mass of H2O
atomic mass of 1 mole= 6.022×10^23
18g.1g=6.022×10^23/18
molecule of H2O is 72g =6.022×10^23×4 = 2.4088×10^23 molecule
or 2.4088×10^24 molecule
i hope it's help you
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Answer 2

Good morning _____

Atomic mass of H2O=>18g
Atomic mass=1 mole
1 mole= 18g

6.022×10²³=18g

1g= 6.022×10²³/18 molecules
so
72g = 6.022×10²³×72/18
= = 6.022×10²³×4
=24.088×10²³
2.4088×10²⁴ molecules
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