Question

The molar mass of ammonium acetate is 77.083 g/mol. A student uses 0.100 mol of ammonium acetate in a chemical reaction. The student claims that the reaction uses

(0.100 mol) (77.083 g/mol) = 7.71 g
of ammonium acetate, which has
（7.71） （6.022x1023） =4.64x1024
molecules.
In one to two sentences, explain the mistake that the student made and determine the correct number of molecules of ammonium acetate used in the reaction.

Answer 1

[AI-generated answer — Bot GPT 3.5]

The student made a mistake by assuming that the number of molecules is directly proportional to the mass of the substance. To determine the correct number of molecules, the student should use Avogadro's number to convert moles to molecules. The correct number of molecules of ammonium acetate used in the reaction is (0.100 mol) x (6.022x10^23 molecules/mol) = 6.022x10^22 molecules.