Question

the mole percentage of O2 in a mixture of 7 grams of N2 and 8 grams of O2 is​

Answer 1

Answer:

MOLE PERCENTAGE MEANS MOLE FRACTION ×100...

Explanation:

WE ARE GIVEN 7gms N2 means mole of N2 =

7÷28...

No. of moles of O2 = 8÷32...

Therefore Mole percentage of O2 = NO. OF MOLES OF O2/TOTAL MOLES IN MIXTURE

=1÷4/1÷4+1÷4

=1÷4/2÷4

=1/2