lolamohamed5031 lolamohamed5031
  • 21-09-2021
  • Chemistry
contestada

How many molecules are in 7 g of H2O

Respuesta :

haliburtonm haliburtonm
  • 21-09-2021

Answer:

0.38

Explanation:its right bc it is

Answer Link
junack12
junack12 junack12
  • 21-09-2021

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

Answer Link

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