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erma4kov [3.2K]
3 years ago
6

How many molecules are in 7 g of H2O

Chemistry
2 answers:
SOVA2 [1]3 years ago
8 0

Answer:

2.342*10^23

Explanation:

# of molecules = Moles * NA

# of molecules = (Mass in grams) / (Molar Mass) * NA

Molar Mass of H2O = 18g/mol

Avogadro's number(NA) = 6.022*10^23

Now,

# of molecules = (7g/18gmol)*(6.022*10^23) = 2.342 * 10^23

Luda [366]3 years ago
5 0

Answer:

0.38

Explanation:its right bc it is

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