How many elements compose the majority of rock-forming minerals?

Why are people not able to skip a dive to the deepest part of the ocean

Fossil fuels are organic compounds that are made from

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