Answer:
3 moles
Explanation:
So, approximately 3 moles of NaNO3 can be obtained, by reacting 253 grams of Na2CrO4. Also, the number of moles is a dimensionless quantity.
I think the second space is chemical bonds
I think the answer is option B
788.9g
density=m/v
2.3g/ml=m/343ml
=343×2.3
=788.9g
