Question

How many molecules are present in 400grams of water

Answer 1

Answer:

So, to sum this up, 6.022⋅1023 molecules of water will amount to 1 mole of water, which in turn will have a mass of 18.015 g . 2.7144moles H2O ⋅6.022⋅1023molec. 1mole H2O =1.635⋅1024molec.

Answer 2

The molar mass of the water molecule is 18 g/mol. It implies that 1 mol of water molecules weigh 18 g.

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