How many molecules, and how many ATOMS, are present in a 1*g mass of nitrogen gas?

1 Answer
anor277
Jul 23, 2017

Of dinitrogen, there are 1/28xxN_A molecules..., where N_A="Avogadro's Number", i.e. N_A=6.022xx10^23*mol^-1

Explanation:

And the number of nitrogen atoms is 1/14*N_A.

N_A="Avogadro's number", =6.022xx10^23*mol^-1.

Why use such an absurdly large number? Well, if we got N_A "hydrogen atoms" we have a mass of 1*g of hydrogen precisely. We got 1*g of dinitrogen.......

And thus we got..........

(1*g)/(28.0*g*mol^-1)xxN_A=??"nitrogen molecules".....

(1*g)/(14.0*g*mol^-1)xxN_A=??"nitrogen atoms"

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