Question

calculate the amount of oxygen required for the production of "112g" of mgo by burning magnesium​

Answer 1

Answer:

the amount of oxygen required = 140 gm

Explanation:

32gm of oxygen gives 40gm MgO

x gm of oxygen gives 112 gm MgO

=40/32× 112=140 gm

Answer 2

Answer: 22.4g O2

Explanation: 2Mg  +  O2 -------------->2MgO

                     2x24    2x16                 2 (24+16)

                    = 48      = 32                     = 80

32g O2 ----->80g MgO

1g MgO  <------32/80g O2  

112g MgO <----- 32/80x112g O2    =  22.4g O2

hope it helps!!