Electromagnetic waves need matter to move.
true
false
humans can see all light waves.
true
false
electromagnetic waves are classified by wavelength.
true
false

What is the overall order of reaction for rate = k[no2]2 ? second order 3/2 order third order zero order none of the listed answers are correct

What effect might melting sea ice have for people who live in coastal areas?

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