A coffee-cup calorimeter containing 100.0 g of H2O is used with an initial temperature of 23.00 oC. If 7.300 g of CaCl2 is added to the calorimeter, the temperature rises to 28.51 oC. Calculate the q for the reaction system in kJoules.

What is the specific heat of a substance that absorbs 2.5×10^3 joules of heat when a sample of 1.0 ×10^4g of the substance increases in temperature from 10°c to 70°c?

An aqueous solution of potassium hydroxide is standardized by titration with a 0.194 m solution of hydrobromic acid. if 25.2 ml of base are required to neutralize 24.2 ml of the acid, what is the molarity of the potassium hydroxide solution? m potassium hydroxide

Substance x has a fixed volume, and the attraction between its particles is strong .substance y had widely spread out particles and can be compressed what can most likely be concluded about these substances