Question

Calculate the mass of 3.011×10^24 molecule of water ​

Answer 1

Answer:

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Answer 2

Given:

Number of water molecules = 3.011×10²⁴

To find:

The mass of the water molecules

Calculation:

1 mole of a compound contains 6.023×10²³ molecules

=> Mass of 6.023×10²³ molecules = Molecular mass of H₂O

=> Mass of 6.023×10²³ molecules = 2(1) + 16 = 18g

=> Mass of one molecule = 18 / 6.023×10²³ grams

=> Mass of 3.011×10²⁴ molecules = (18 / 6.023×10²³) × 3.011×10²⁴

                                                      ≈ 90 grams

The mass of 3.011×10²⁴ molecules of water is 90 grams