25.0 mL of 0.150 M CaCl2 is added to 25.0 mL of 0.250 M Ni(NO3)2. Calculate the concentration of each ion (Ca2+, Cl-, Ni2+, NO3-) after mixing. Assume volumes are additive and no chemical reaction takes place.

The grooves or folds of the brain are called

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.

What would be the original temperature of a gas that has a volume of 2.0 l and a pressure of 2.0 atm and an unknown temperature that the volume increased to 3.5 l in its pressure decreased to 1.0 atm if the final temperature is measured to be 11°c