1.
earth's diameter is 12.756 kilometers. how many meters is this?
2.
the diameter of earth's moon is 3.476 kilometers. express this distance in centimeters.

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

Connect the whole numbers on the periodic table to indicate what they represent?

An unsaturated hydrocarbon is a hydrogen-carbon compound with a. a network solid structure b. single bonds c. single bonds in a branched-chain structure d. double or triple bonds