calculate the percent concentration of each of the following solutions

Question

1. 2.78g of NaHCO3 dissolved in enough water to make 200.0ml of solution

2.3.25ml of H2SO4 dissolved in enough water to make 68.0 ml of solution

Answer 1

Both of these are very dilute solutions,assume density is the same as water.

percent concentrat=masssolute/(massSolution) * 100