How many moles are there in 4.9x10^23 molecules of CO2? F. 0.81 moles of CO2
G 8.14X10^45
H. 2.95X10^47
J. 2052.44

About 8 gallons of fuel will be used. (8.08)

C) the increase in atmospheric pressure pushes the walls of the balloon outward thus making it  is the answer.hope i you.

Answerδh > 0explanationc₆h₆  (s)  → c₆h₆ (l)if you are changing it from a solid to a liquid, you are pretty much melting the solid. this requires heat energy. therefore, the reaction is endothermic (takes in energy); the system enthalpy increases as the reaction proceeds: δh > 0.

If your on odysseyware i believe the answer would be c.