Question

The molecular weight of salicylic acid, C7H6O3, is 138.12 g/mol. What is the mass, in grams, of 0.802 mol of salicylic acid?

a) 97.33 g
b) 110.76 g
c) 115.22 g
d) 123.21 g

Answer 1

To find the mass of 0.802 mol of salicylic acid, you multiply the number of moles by the molar mass, 138.12 g/mol, which gives you 110.76 grams.

Step-by-step explanation:

To calculate the mass of 0.802 mol of salicylic acid, first, you need to use the molar mass of salicylic acid, which is given as 138.12 g/mol. To find the mass, you multiply the number of moles by the molar mass:

Mass = number of moles × molar mass

Mass = 0.802 mol × 138.12 g/mol

The calculation will give you:

Mass = 110.76 g

So, the mass of 0.802 mol of salicylic acid is 110.76 grams, which corresponds to option b).