Question

Calculate the number of atoms in 0.05 g of hydrogen gas { Atomic Mass of H = 1 }​

Answer 1

Explanation:

1 mole of hydrogen gas contains 6.02×10

23

atoms.

1 molecule of hydrogen(H

2

) contains two atoms of hydrogen.

∴ 1 gm of hydrogen contains

2

1×6.02×10

23

=3.01×10

23

molecules

Answer 2

Answer:

23 molecules

formula

no of mass = given mass/ Atomic mass ×Na×Alomicity

1 mole of hydrogen gas contains 6.02×10²³ atoms

1 molexof hydrogen (H=2) this is atomic number it contains two atoms hydrogen

Therefore

1 gram of hydrogen contains 2

1×6.02×10²³

= 3.01×10

= 23 molecules

Thankyou