3) explain why the standard enthalpy of vaporization, (delta)hvap, values for each set of compounds below are not the same.
a. ch4 and h2o
b. ph3 and nh3
c. c2h6 and c3h8
d. bh3 and of2

H2so4(aq) + mg(s)—> mgso4(aq) +h2(g) which substance is the acid in the reaction?

Word equation for k(s) +h2o(l) yield koh (aq) + h2

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state.a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car