How many moles of particles are formed by dissolving one mole of each of the following in water?

CaCl2

Brainliesttt me asap! the below reaction can be categorized as more than one type of reaction. which reactions are these, and what are the types of reactions?

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

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.