The molar mass of water (H2O) is 18. 0 g/mol. A sample of water has a mass of 18. 0 g. How many moles of water are contained in this sample? 1. 00 mole 18. 0 moles 36. 0 moles 324 moles.

Respuesta :

1 mole of water are contained in the given sample of water of 18.00 grams.

How we calculate the moles?

Moles of any substance will be calculated as:

n = W/M, where

W = given or required mass

M = molar mass

In the question given that,

Molar mass of water H₂O = 18 g/mole

Given mass of water H₂O = 18 grams

Now we put all these values in the above equation, we get

Moles of H₂O = 18 grams / 18 g/mole = 1 mole

Hence, option (1) is correct, i.e. 1 mole of water is present.

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