Question

When asked about how many particles of Hydrogen are in 1 gram of Hydrogen, one student said 6.02x10^23, but another student said 5.97258x10^23. Explain the difference of opinion and say who is correct (if any).

Answer 1

Molar mass of hydrogen = 2 $g\ mol^{-1}$

So particles of hydeogen in 2 gm hydrogen = $6.022\times 10^{23}$ particles

So particles of hydrogen in 1 gm hydrogen = $\frac{1}{2}\times 6.022\times 10^{23}=3.011\times 10^{23}$ particles

So, No one is correct .