I need a friend right now>I am so sad

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?

In the reaction between a crushed antacid tablet and vinegar what gas is emitted

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