How is energy related to the change of state represented by the model?
a. atoms gain energy as a solid changes to a gas.
b. atoms gain energy as a liquid changes to a gas.
c. atoms lose energy as a solid changes to a gas.
d. atoms lose energy as a liquid changes to a gas.

Apeak with a retention time of 407 s has a width at half-height (w1/2) of 7.6 s. a neighboring peak is eluted 17 s later with a w1/2 of 9.4 s. a compound that is known not to be retained was eluted in 2.5 s. the peaks are not baseline resolved. how many theoretical plates would be needed to achieve a resolution of 1.5?

When hydrochloric acid reacts with potassium hydroxide solution, the following reaction occurs. hcl (aq) + koh (aq) h2o (l) + kcl (aq) the reaction gives off heat energy, so it is an reaction.

When a scientific theory has been tested and proved by the scientific community, it becomes a law