can someone help me out? im not sure if i did it right but if i didn’t do it right show me how :) ASAP

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

The bone of a dinosaur and the imprint of a leaf are examples of which kind of fossils? a) index b) body c) amber d) trace

Asolubility table shows that almost all compounds of group 1 metals are soluble in water. this general rule tells you that mgi2 is soluble rbno3 is soluble cacl2 is soluble co2 is soluble