Question

0.2g.m of an element weighs 12g. hence find the atomic mass is??

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Answer 1

Answer:

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Answer 2

Answer:

atomic mass = 9.96 × 10^(-23) gram

Explanation:

0.2g.m. weight = 12g

1g.m. weight = (12/0.2) = 60g

here g.m. = gram mole ( in general mole)

number of atom in 1g.m. = mole × avogadro's number

number of atom in 1g.m. = 1 × avogadro's number

number of atom in 1g.m = 6.023×10²³

mass of 1 atom = molecular mass ÷ number of atoms

atomic mass = (60) ÷ 6.023 × 10²³

atomic mass = 9.96 × 10^(-23) gram