The mass of recovered copper may be measured greater or less than the amount at the beginning. a. Give at least one reason why the mass of recovered copper might be greater than the initial mass of copper, and one reason why it might be less than the initial mass.
b. What steps could be taken to minimize these sources of error in the experiment?

•what conclusions can you make about the relationship between the volume of a gas and its temperature? • what conclusions can you make about the relationship between the volume of a gas and its pressure? • what possible variables have you not accounted for? as you did the procedures, is it possible that the atmospheric pressure may have changed? if it did change over the course of your experiment, then how would your results have been affected?

What is the chemical formula for a compound between li and br? libr li2br libr2 libr3

An atom that gains or loses one or more electrons is called a(n)