Any object that orbits around a larger object is called what

Suppose that some of the compound spilled out of the crucible after it was heated. would that cause the percent by mass of water in the compound determined by the experiment to be too low, too high, or unchanged? briefly explain your answer.

From the choices provided below, list the reagent(s) in order that will react with cyclopentanone to form the compound shown below.

Ahelium balloon contains 16.9 l of helium at stp. how many atoms of helium are in the balloon