How much potassium nitrate, KNO3, would completely dissolve in 100g of water at 40℃? A. 28 grams

B. 108 grams

C. 45 grams

D. 65 grams

Pls help, I'll mark the brainiest I really need a good grade, so pls answer correctly.

Examine the nuclear reacti why is this classified as a nuclear reaction rather than a chemical reaction? it is not balanced. a new compound is formed. a change has occurred in a nucleus. a new element has been formed.

Under the action of a constant force an object accelerates at 7.8 m/s2. what will the acceleration be if (a) the force is halved? (b) the object's mass is halved? (c) the force and the object's mass are both halved? (d) the force is halved and the object's mass is doubled?

How much energy is supplied to each coulomb of charge that flows through a 12-v battery?