Question

C .How many grams does an atom of
hydrogen weigh?



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Answer 1

Answer:

These numbers are either in atomic mass units (amu), or in grams per mole of atoms. This means that 1 MOLE of hydrogen atoms will weigh 1.008 grams.

Answer 2

Explanation:

H2O has a molar mass of 18gm.

Hence we will use two formula here mole=no of atoms/avagadro no.(Na)

And mole=given mass/molar mass

Hence

Mole=1/Na substituting the given

Next equating both formula

1/Na=given mass/18

Given mass=18×1/Na =18×1/6.022×10^23

=3×10^-23gm