Answer :
6.022 X 1023 number of N2 molecules.
As we know that 1 mole = 6.022 X 1023atoms
For 1 mole of N2 molecules:
First, we apply the formula:
⇒ Mass of N2 = No. of moles × Molar mass of N2
⇒ Mass of N2 = 1 mole × 2(atomic mass of nitrogen)
⇒ Mass of N2 = 1mole × 28u
⇒ Mass of N2 = 28g
Thus, mass of 6.022 × 1023 number of N2 molecules is 28g.
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