Question

3 gram of mg is burnt in a closed vessel containing 3 gram of oxygen the weight of excess reactant left is

Answer 1

Answer:

Mg + 1/2O2--> MgO

24g 16g

Here limiting is Mg as it is required more.

1gm Mg requires 16/24g Oxygen

3gm Mg requires 3×2/3=2 gm of oxygen.

so 3 gm Mg and 2 gm O is reacted.

what left is 1 gm of Oxygen.

Answer 2

Answer:

1 gm of oxygen is left .

hope it's right