What is the mass of a sample of water containing 3.55×1022 molecules of h2o?

The mass of water sample is 1.062 g

Explanation:

We are given:

Number of molecules of water =

According to mole concept:

number of molecules are present in 1 mole of a compound

So, number of molecules will be present in = of water.

To calculate the mass of a substance, we use the equation:

Molar mass of water = 18 g/mol

Moles of water = 0.059 moles

Putting values in above equation, we get:

Hence, the mass of water sample is 1.062 grams

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