At 55 ml. water was dissolved in 5 g of potassium nitrate. what is the mass fraction of the substance

At 55 ml. water was dissolved in 5 g of potassium nitrate. what is the mass fraction of the substance in the resulting solution?

1. Since the density of water is 1 g / ml, then:

m (water) = V (water) * ρ (water) = 55 ml * 1 g / ml = 55 g.

2. Calculate the mass of the solution:

m (solution) = m (water) + m (KNO3) = 55 g + 5 g = 60 g

3. Determine the mass fraction of potassium nitrate in the resulting solution:

ω (KNO3) = (m (KNO3) / m (solution)) * 100% = (5 g / 60 g) * 100% = 8.33%.

Answer: the mass fraction of potassium nitrate in the resulting solution is 8.33%.