Question

Answer who really know the answer ​

Answer 1

Answer:

First of all we should find out the mass of 1 mole of nitrogen molecules

. Now, <br>

mole of

= Molecular mass of

in grams <br>

Mass of 2 N atoms in grams <br>

<br>

grams <br> Thus, the mass of 1 mole of nitrogen molecules is

grams. Now,

mole of nitrogen molecules contains

molecules. This mass of

molecules of nitrogen is

grams.

Answer 2

Molar mass of N₂

28 g/mol

28 g of N₂ has 6.022 x 10²³ molecules

Then, 1.807 x 10²⁴ molecules have:  $\frac{18.07 \times10^2^3}{6.022\times10^2^3}$ = 3 moles approx

Mass of three moles of N₂ =  3 x 28 = 84

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