mole

what is the mass of oxygen that will react with 21 gm of Al?

3 Answers

1
Debosmit Majumder ·

just write the eqtn: 4Al + 3O2 = 2Al2O3....

1
Abhishek Das ·

I wan't the ans !! I hav solved it!! but ans. is not matching!!

262
Aditya Bhutra ·

continuing from debosmit's post,

4.moles of Al = 3.moles of O2
or, 4*21/27 = 3*x/32
or x= 128*7/27 = 33.18 gm

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