Question

how many atoms are there in 90g of water​

Answer 1

Answer:

Hence 90 g of water will contain 30.11×10^(23) molecules.

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Answer 2

Answer:

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$Moles = \frac{Given \ Mass}{Molar \Mass} \\\\Moles = \frac{90}{18} = 5$

1 mole contain 6.023 × 10²³ molecules of water

1 mole contain 3 × 6.023 × 10²³ atoms.

5 mole contain15 × 6.023 × 10²³ atoms.