The half-lifIf you start with a 256–g sample of Hassium-265, then after 8 seconds grams of Hassium-265 will be left.

Water is initially present in a state where its molecules are far apart. during a change of state, its molecules slow down. which change of state has most likely taken place? from a gas to a liquid from a liquid to a gas from a solid to a liquid from a gas to a plasma

Asolution is made by dissolving 2.3 moles of sodium chloride (nacl) in 0.155 kilograms of water. if the molal boiling point constant for water (kb) is 0.51 °c/m, what would be the boiling point of this solution? show all the steps taken to solve this problem.

What is the volume of 3.2 moles of chlorine gas (cl2) at 295 k and 1.1 atm?