<u>Answer:</u>
<u>For A:</u> The mass of iron (III) sulfate is 600. g
<u>For B:</u> The moles of ammonium carbonate is 0.07216 moles
<u>For C:</u> The mass of given number of molecules of aspirin is 0.359 grams.
<u>For D:</u> The molar mass of diazepam is 284.7 g/mol
<u>Explanation:</u>
To calculate the number of moles, we use the equation:
.....(1)
We are given:
Number of moles of iron (III) sulfate = 1.50 mol
Molar mass of iron (III) sulfate = 399.9 g/mol
Putting values in equation 1, we get:
Hence, the mass of iron (III) sulfate is 600. g
We are given:
Mass of ammonium carbonate = 6.935 g
Molar mass of ammonium carbonate = 96.1 g/mol
Putting values in equation 1, we get:
Hence, the moles of ammonium carbonate is 0.07216 moles
We are given:
Number of aspirin molecules =
Mass of 1 mole of aspirin = 180.16 g/mol
According to mole concept:
number of molecules occupies 1 mole
So, number of molecules of aspirin has a mass of 180.16 grams
Thus, number of molecules of aspirin will have a mass of
Hence, the mass of given number of molecules of aspirin is 0.359 grams.
We are given:
Moles of diazepam = 0.05570 mol
Given mass of diazepam = 15.86 g
Putting values in equation 1, we get:
Hence, the molar mass of diazepam is 284.7 g/mol