As a result of excessive vomiting, people with bulimia nervosa often have low
a. vitamin a levels
b. niacin levels
c. chloride levels
d. calcium levels

Bulimia nervosa is a disorder which is a critical eating imbalance and can be life threatening in some cases.

The suffered person eat huge amount of uncontrolled food and then try to balanced the high intake by excessive vomiting (generally).

Due to excessive vomiting there can be a loss of mineral in the human body.

it may lead to Hypokalemia and hypochloremia

Hypokalemia is low level of potassium

hypochloremia  is low level of chloride

Thus answer is people with bulimia nervosa often have low chloride level.

answer: the enthalpy of the overall chemical reaction is +87.88 kj or +88 kj.

according to hess's law, the overall enthalpy of a reaction is the difference between the sum of enthalpy values of all the products and the sum of enthalpy values of all the reactants.

δh(reaction) = ∑nδh(products) - ∑nδh(reactants)

δh(reaction) = [δh +δh] - [δh]

δh(reaction) = [1(-287.02) + 1(0) ] - [1(-374.9)] kj = +87.88 kj

here, δh (pcl3) = -287.02 kj, δh(cl2) = 0, δh(pcl5) = -374.9 kj

therefore, enthalpy of the overall reaction is +87.88 kj or +88 kj.

po-215 i got it right on the quiz