Which change in oxidation number represents reduction? a) –1 to +1 b) –1 to –2 c) –1 to +2 d) –1 to 0

Problem page gaseous ethane reacts with gaseous oxygen gas to produce gaseous carbon dioxide and gaseous water . if of water is produced from the reaction of of ethane and of oxygen gas, calculate the percent yield of water. be sure your answer has the correct number of significant digits in it.

Arollercoaster car at the top of a hill has potential energy kinetic energy chemical energy light energy

The volume of an unknown substance in a sealed glass jar is 50 milliliters. the volume of the jar is 200 milliliters. which state of matter could the substance be?