nohey7itsessiller
nohey7itsessiller nohey7itsessiller
  • 15-06-2016
  • Chemistry
contestada

How many molecules of H2O are there in 1.0 g of H2O?

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Willchemistry
Willchemistry Willchemistry
  • 15-06-2016
Molar mass H₂O = 18.0 g/mol

number of moles :

1.0 / 18.0 => 0.055 moles

1 mole -------------- 6.02 x 10²³ molecules
0.055 moles --------  ? molecules

molecules = 0.055 x ( 6.02 x 10²³) / 1

molecules = 3.311x10²² / 1

= 3.311 x 10²² molecules

hope this helps!
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