Question

Find the mass of 2 moles of nitrogen atom

Answer 1

Ans:- atomic mass of nitrogen is 14 u.In 1 mole Nitrogen or 28 u nitrogen there are 6.022 x 1023 atoms. So, in 14 u, there will be 6.022 x 1023 / 2 atoms.

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Answer 2

molar mass of nitrogen = 14u

as we know that

number of moles =

given mass/molar mass

2 moles = given mass/ 14

given mass = 2×14

given mass = 28g

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