Question

Calculate the number of molecule present in 0.5 mole of water.

Answer 1

Answer:

A mole is about 6.022 * 10^23 of anything. So half a mole of water molecules is 3.011 * 10^23 molecules of water. 0.5 x 6.022 x 10^23 molecules of water.

Explanation:

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Answer 2

Answer: $3.012\times 10^{23}$  molecules

Explanation:

According to avogadro's law, 1 mole of every substance weighs equal to the molecular mass and contains avogadro's number $6.023\times 10^{23}$ of particles.

1 mole of water $(H_2O)$ contains=6.022\times 10^{23}[/tex] molecules of water

Thus 0.5 moles of water $(H_2O)$ contains=$\frac{6.022\times 10^{23}}{1}\times 0.5=3.012\times 10^{23}$  molecules of water

Thus there are $3.012\times 10^{23}$  molecules of water in 0.5 moles of water.