A reaction occurs when solid X is placed into solution Y. As a result, the temperature of the new solution increases by 3°C. The
temperature rises another 2°C when more of solid X is added to the solution. What does this indicate about the effect of adding
more solid?
1.It increased the number of molecular collisions.
2. It decreased the number of molecular collisions.
3. It decreased the space between the molecules and lowered the reaction rate.
4. It increased the space between the molecules and increased the reaction rate.

1.43 x 10^-11 j the guy commented the awnser just making sure u see it .

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.