What is needed to release the energy in a bond? High temperatures

An electro-magnetic force

A fast moving electron

More energy

You are making a solution of calcium chloride dissolved in water. you add solid, stir, and it dissolves. you add just a spatula tip full, stir, and the solid does not dissolve. how could you describe the solutions before and after adding the spatula tip amount

What is the molar mass of a gas that has density of 2.054 g/l

Describe what happens to the molecules as water goes from ice to liquid to vapor. be sure to explain what happens to the temperature during the phase changes.