Question

calculate the number of atoms present in 1 gr He gas
1) 1.506*10^23
2) 3.01*10^23
3) 6.023*10^23
4) 12*10^23

please say with explanation

Answer 1

Answer:

1) 1.5×10^23

4g of He gas contains 6×10^23 atoms

so, 1g of He will have = 6×10^23/4 = 1.5×10^23

hope this will help you