The internal combustion engine takes advantage of the ability of the combustion reaction of gasoline to do and move a piston up and down. A. free energy
B. enthalpy
C. work
D. entropy
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When determining the shape of a molecule, it is important to draw a lewis dot structure first in order to see the total number a. electrons within the moleculeb. bonding and unshared pairs around central atomc. unshared pair within the molecule( i really need it )

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?

Select all the correct answers. which compounds have the empirical formula ch20? (multiple answers)a. c2h4o2b. c3h603c. ch2o2d. c5h1005e. c6h1206