Final answer:
The concentration in percent by mass of the solution is 3.33%.
Step-by-step explanation:
To find the concentration in percent by mass of the solution, we need to calculate the mass of ethylene glycol and water in the solution. The mass of the solution is the sum of the masses of the solute and the solvent. The concentration can then be calculated by dividing the mass of ethylene glycol by the mass of the solution and multiplying by 100.
The mass of ethylene glycol is 17.2 g and the mass of water is 0.500 kg. The mass of the solution is the sum of these two masses, which is 17.2 g + 500 g = 517.2 g.
The concentration in percent by mass is calculated as (mass of ethylene glycol / mass of solution) x 100 = (17.2 g / 517.2 g) x 100 = 3.33% (rounded to two decimal places).
Learn more about concentration