Question

Calculate the molar mass for each of the following:

a. FeSO4, iron supplement
b. Al2O3, absorbent and abrasive
c. CH NOZS, saccharin, an artificial sweetener

Answer 1

The molar mass for FeSO4 is 151.907 g/mol, for Al2O3, it is 101.961 g/mol, and for C7H5NO3S, it is 183.181 g/mol.

Step-by-step explanation:

Calculation of Molar Masses:

To calculate the molar mass of a compound, you sum the masses of all the atoms in a molecule of that compound. To do this, you should use the atomic masses from the periodic table. Here are the detailed steps for the compounds in question:

1. FeSO4, Iron(II) sulfate (Iron supplement): Fe (55.845 g/mol) + S (32.065 g/mol) + 4 × O (4 × 15.999 g/mol) = 151.907 g/mol
2. Al2O3, Aluminum oxide (Absorbent and abrasive): 2 × Al (2 × 26.982 g/mol) + 3 × O (3 × 15.999 g/mol) = 101.961 g/mol
3. C7H5NO3S, Saccharin (Artificial sweetener): 7 × C (7 × 12.011 g/mol) + 5 × H (5 × 1.008 g/mol) + N (14.007 g/mol) + 3 × O (3 × 15.999 g/mol) + S (32.065 g/mol) = 183.181 g/mol

Answer 2

Answer: a . 152g/mol b. 102g/mol c. 183g/mol

Step-by-step explanation:

By stating the atomic masses of each element in the questions, we have;

Fe= 56, S= 32, O= 16, Al = 27, C = 12, H =1 , N = 14, therefore

(a). FeSO4 = 56 + 32 + (16 x 4) = 152g/mol

(b). Al2O3 = (27 x 2) + (16 x 3) = 102g/mol

(c). C7H5NO3S ( Saccharin, an artificial Sweetner) =

(12 x 7) + (1 x 5) + 14 + (16 x 3) + 32 = 183g/mol