Question

gram atom of hydrogen in 5.5g h2

Answer 1

Explanation:

4 gram of H is 4moles H - hence, 4 gram atoms of hydrogen. However, had been hydrogen gas, then 2 gram molecules of H2 make up 4 grams mass. Mass of Helium is 4grans per mole. And it is a monoatomic species.

Answer 2

Explanation:

We know that

1 gram atom = Avogadro number of atoms

For 4g of hydrogen atoms

1 mole= given mass/ molar mass

= 4/1 =4 mol

No. Of gram atoms = 4

For 1g of helium atom .

I mole = 1/4=0.25

No. Of gram atoms= 0.25