Question

54. The composition of residual mixture will be if
30 g of Mg combines with 30 g of oxygen
1) 40g MgO + 20g 0, 2) 45g MgO + 15g 0,
3) 50g MgO + 10g 0, 4) 60g MgO only​

Answer 1

Answer:

3

Explanation:

1. write balanced chem equation.

2. find limiting reagent ...i.e., Mg

3.using unitary method find amount of O left