Which is a compound?
a. kr
b. o2
c. cl2
d. cuf2

What is the equilibrium constant of aa+bb=cc+dd

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6

How could a student test the effect of removing heat from a gas that is stored in a sealed container? what must occur in order for matter to change states?