Question

no of gram moles present in 7g of CO

Answer 1

I mol CO = 28 g
7 g = 28/4 g
7 g = 0.25 mol CO
Write something more, like the given stuff, u know, to lengthen it.

Answer 2

Here is ur ans.
1 mol CO = 28 g
7 g = 28/4 g
7 g = 0.25 mol CO
Hope it helps