Question

find the mass of 1 atom of neon if its molar mass is 20g​

Answer 1

Numberofmoles=

Molarmass

Givenmass

20gmofNe=1moleNe

100gm=

20

1

×100moles

=5moles

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Answer 2

$molar \: mass \: of \: neon = 20g \\ Avogadro \: number = 6.022 \times {10}^{22} \\ atomic \: mass(neon) = \frac{molar \: mass(neon)}{Avogadro \: number} \\ = \frac{20g}{6.022 \times {10}^{22} } \\ = 20units$