Question

13. How many water molecules are there in one drop of water (0.0018ml) at room temperature
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Answer 1

Answer:

One drop of water has the volume 0.0018 mL. The molar mass of water (H2O) is 18.0 grams/mol (1.008 + 1.008 + 16.0). No of water molecules in 1 drop =0.0001×6.022×1023=6.022×1019 water molecules.

Answer 2

Answer:

Explanation:calculater no. Of moles by

Moles=0.0018/22400

Then calculate no. Of molecules by the formula

Moles=no. Of molecules/avagadroes no.

i.e.0.0018×6.022×10^34/22400=no of molecules.