The quantity of heat evolved or absorbed is directly proportional to the mass of the solute that is dissolved in the solvent.  Why?

A student dissolves 17. g of sucrose (c,H,„0,,) in 250. mL of a solvent with a density of 1.04 g/mL. The student notices that the volume of the solvent does not change when the sucrose dissolves in it. Calculate the molarity and molality of the student's solution. Be sure each of your answer entries has the correct number of significant digits. molarity molality

.2500 moles of dissolved silver nitrate is mixed with .2500 moles of dissolved sodium carbonate to make silver carbonate. what is the theoretical mass of the precipitate?

If 14.3 g of NH3 is dissolved in 375. ml of water, what is the concentration of the resulting solution? .446 Molar .315 Molar .445 Molar 91.16 Molar 2.24 Molar

How is the term solubilty: Represent and quantify chemical reactions at the atomic level?

49. This is the principle that best describes the colligative property represented by the illustration. a. The addition of a volatile solute lowers the vapor pressure of a solution. O b. The addition of a volatile solvent lowers the vapor pressure of the solution. O c. The addition of a non-volatile solute lowers the vapor pressure of a given solution. d. The addition of a non-volatile solvent lowers the vapor pressure of a given solution 50. This is to establish an equilibrium within the solution of salt water." a. Add more salt to the solution. b. Heat the solution to boiling. O c. Close the container. d. Add more water to the solution

7. A 14.5 g sample of a nonionic solute is dissolved in 50.0 g of water. The solution freezes at -2.50 °C. Calculate the molar mass of the solute.