Question

Question #f0b2c

Answer 1

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Explanation:

Avogadro constant is defined as the number of molecules present in one mole of compound.

One mole of water is `18` grams.

Since `3.0 * 10^(-21)` grams contain `200` molecules, it follows that `18` grams should have

`18 cancel("grams") xx 200/(3 xx 10^(-21) cancel("grams")) = 12 xx 10^23`

Which shows something is wrong with the question because Avogadro's constant is `6.02 * 10^(23)`.