Question

An atom of neon has a mass of 3.35×10^-23 g. How many atoms of neon are tgere in 20g of the gas?

Answer 1

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Answer 2

$<strong>5.97\times 10^{23}$  atoms of neon are there in 20 g of the gas.

Explanation:

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

1 atom of neon weighs = $3.35\times 10^{-23}g$

Thus $3.35\times 10^{-23}g$ is contained by = 1 atom

20 g is contained by= $\frac{1}}{3.35\times 10^{-23}\times 20=5.97\times 10^{23}$  atoms

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