Answer:
The mass % of HNO3 in the solution is 71.0 %
Explanation:
Step 1: Data given
Density of HNO3 = 1.42 g/mL
Concentration = 16 M = 16 mol /L
Molar mass HNO3 = 63.01 g/mol
Assume the volume = 1L or 1000 mL
Step 2: Calculate mass of the solution
Mass = density * volume
Mass = 1.42 g/mL * 1000 mL
Mass = 1420 grams
Step 3: Calculate moles HNO3
Moles = molarity * volume
Moles = 16 M * 1L
Moles = 16 moles
Step 4: Calculate mass HNO3
Mass HNO3 = moles * molar mass
Mass HNO3 = 16.0 moles * 63.01 g/mol
Mass HNO3 = 1008.16 grams
Step 5: Calculate the mass percent
mass % = (1008.16 grams / 1420 grams) *100%
mass % = 71.0 %
The mass % of HNO3 in the solution is 71.0 %
