How many grams of CaBr2 are dissolved in 0.455L of a 0.39M CaBr2 solution? Remember to convert mol to grams use the formula on the back of your CRT)

Assuming complete dissociation of the solute, how many grams of kno3 must be added to 275 ml of water to produce a solution that freezes at -14.5 c? the freezing point for pure water is 0.0 c and k_f is equal to 1.86 c/m

Describe the forces both attractive and repulsive that occur as two atoms move closer together.

Why is the bottom layer of a trophic pyrimid the