1.

3.011X10²³ number of N atoms - Calculate the mass of it.

Answer»

No. of atoms=3.011×10²³
we know that :
no. of atoms= no.of MOLES×avagadros no.
3.011×10²³=no. of moles ×6.022×10²³
no. of moles=1/2=0.5 mol
we know that:
no. of moles= required MASS/ MOLECULAR mass
required mass= molecular mass/2 .
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