Which alkyl halide in each pair is more reactive in an e2 reaction with hydroxide ion?

What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0

Afusion reaction takes place between carbon and another element. neutrons are released, and a different element is formed. the different element is a) lighter than helium.b)heavier than helium.c)the same weight as helium.d)dependent on the element that reacted with carbon.

Which of the following is a physical change? a.burning a piece of wood b.sawing a piece of wood in half c.rust forming on an iron fence d.a copper roof changing color from orange to green