1: how many formula units are in 7.9 moles of lithium fluoride?
*give answer using scientific notation*
*round your answer to the appropriate number of significant figures*

2: how many molecules are in 15 moles of carbon dioxide?
*give answer using scientific notation*
*round your answer to the appropriate number of significant figures*

Voltaic cells produce a positive overall charge. what does this indicate? a. the reaction is likely to be endothermic. b. the reaction is spontaneous. c. the reaction is not likely to occur. d. the reaction is not spontaneous.

How is electrolysis most commonly used to produce an energy source? a - splitting water molecules produces oxygen, which organisms breathe to fuel their bodies. b - splitting water molecules produces hydrogen gas, which is used to power machines through hydrogen fuel cells. c - splitting carbon dioxide molecules produces coal, a form of carbon that can be burned to produce heat. d - splitting carbon dioxide molecules produces natural gas, which can be burned to generate electricity in power plants.

Explaining why atoms bondcomplete the sentence.atoms form chemical bonds to satisfy the    rule and to become  .