Question

5604 cm3 of h2 gas at stp contains atoms of hydrogen​

Answer 1

Explanation:

22,400cm3 at s.t.p. = 1 mole

560cm3 at s.t.p. = 560 ÷ 22,400 moles

= 0.025 mol-1

1 mole = 6 x 1023 molecules

0.025 moles = 0.025 x 6 x 1023 molecules

= 0.15 x 1023 molecules

2 x 0.15 x 1023 (2 atoms in H2) = 3 x 1022

Is this right? I googled it and someone on another forum said that the answer is 6.02x1023.