Final answer:
The mass percent of rubbing alcohol in the solution, divide the mass of rubbing alcohol by the total mass of the solution, then multiply by 100. In this case, the mass percent of rubbing alcohol is 55%.
Step-by-step explanation:
To calculate the mass percent of rubbing alcohol in the solution, we need to determine the mass of the rubbing alcohol and the total mass of the solution. The mass percent is calculated by dividing the mass of the rubbing alcohol by the total mass of the solution and then multiplying by 100.
Mass of rubbing alcohol = 275 g
Mass of water = 225 g
Total mass of solution = mass of rubbing alcohol + mass of water = 275 g + 225 g = 500 g
Mass percent of rubbing alcohol = (mass of rubbing alcohol / total mass of solution) * 100%
Mass percent of rubbing alcohol = (275 g / 500 g) * 100% = 55%.