A solution is made by dissolving 38.750 g of sample of an unknown, nonelectrolyte compound in water. The mass of the solution is exactly 500.0 g. The boiling point of this solution is 100.220 °C.
What is the molecular weight of the unknown compound? Constants can be found in Colligative Constants table.

help!

Harvey kept a balloon with a volume of 348 milliliters at 25.0˚c inside a freezer for a night.  when he took it out, its new volume was 322 milliliters, but its pressure was the same.  if the final temperature of the balloon is the same as the freezer’s, what is the temperature of the freezer? the temperature of the freezer is  kelvins.

Particle model to predict what will happen if a sharp object creates a hole in the soccer ball

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li