Areaction that requires free energy:
a. must be endothermic.
b. is nonspontaneous.
c. must correspond to a decrease in entropy.
d. is spontaneous.

A reaction that requires free energy is spontaneous. The answer is letter D. this is because it does not any external energy to apply unto it to make the reaction happen. It just happens by itself that is why it is spontaneous.

emily ruth's annual premium is $1058.50

step-by-step explanation:

emily ruth is a female of 27 years age purchasing 20 year endowment insurance with face value $25000.

from the given table,

for females, the age of a male 3 years younger should be used.

so, we have to check for 24 year male for 20 year endowment.

it is 42.34 for every $1000 face value.

for a face value of $25000,

it is 25 * 42.34 = $1058.50

∴ emily ruth's annual premium is $1058.50

wire in brush may conduct electricity from cell to drill and vice versa electrc shock possible