Chemistry How many molecules of H2O in 100kg of snow? dont know where the density comes in

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To find the number of H2O molecules in 100kg of snow, the relevant calculations involve the molecular mass of water and Avogadro's number. One mole of H2O, which weighs 18g, contains approximately 6.023x10^23 molecules. Therefore, 100kg (or 100,000g) of H2O equates to about 3.346x10^27 molecules. The density of snow, given as 800 kg/m3, is not necessary for this calculation and may cause confusion. The focus remains on the mass and molecular weight of water for determining the total number of molecules.
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How many molecules of H2O in 100kg of snow?? don't know where the density comes in!

Homework Statement



How many molecules of H2O are there in 100kg of snow? Density of snow is given as 800 kg/m3

Homework Equations



1 mole = 6.023x10^23 molecules
mass/molecular mass = number of moles


The Attempt at a Solution



This is my attempt, ignoring the density.

1 mole of H2O = 6.023x10^23 molecules of H2O

Hence 18g H2O contains 6x10^23 molecules
1g = 3.346x10^22 molecules
100,000g (100kg) = 3.346x10^27 molecules of H2O

Where/how does the density come into it?
 
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Your solution is correct. You don't need the density to solve the problem, so it's there to confuse you.
 


Excellent. Thanks man
 

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