Question

5.The addition of 6 g of salt to a sample of pure water causes its freezing point to be reduced from 0°C to -1.5°C. After an additional amount of salt is dissolved in the solution, its freezing point is -4.5°C. What is the total amount of salt dissolved in the sample of water?

Answer 1

Assuming a linear relationship:\[\frac{6g}{-1.5}=\frac{x}{-4.5}\]Solving for x you will end up with 18g total salt added.