Question

Compute gram molecular weight of H2, gas if H2, gas contains 12.046 x 10^23 atoms at STP:​

Answer 1

Answer:

If, 24.09 * 1023 atoms weighs 4 grams. Therefore, the gram molecular weight of H2 equal 1 gram. Regards.

Explanation:

number of moles=n=

molecular weight

weight

Also, number of molecules =n×6.022×10

23

1. Moles of Cu=

6.023×10

23

12.046×10

23

=2 moles

2. Moles of Iron =

55.9

27.95

=0.5 moles

3. Moles of CO

2

=

6.023×10

23

1.51×10

23

=0.25 moles