Answer: The mass percent is 0.064%
Step-by-step explanation:
To calculate the mass percent of solute in a given solution, we use the formula:
Mass of sugar (solute) = 32 g
Mass of solvent = 50 kg = 50000 g ( 1kg=1000g)
Putting values in above equation, we get:

Hence, the mass percent is 0.064%