A compound consists of 81.8% C and 18.2% H by mass. What is its empirical formula?

If equal masses of the listed metals were collected , which would have a greatest volume ? a. aluminum 2.70,b.zinc7.14,c.copper 8.92,d.lead 11.34

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

Water is initially present in a state where its molecules are far apart. during a change of state, its molecules slow down. which change of state has most likely taken place? from a gas to a liquid from a liquid to a gas from a solid to a liquid from a gas to a plasma