Chemistry 122 d

Question

Calculate the mass of 2.35 mol glucose

Answer 1

The chemical composition of glucose is C₆H₁₂O₆

To calculate the Molar Mass, we must multiply each element's atomic mass with the subscript and take the sum

Atomic Mass in grams of each element:

Carbon = 12.01 g

Hydrogen = 1.008 g

To find the molar mass for 1 mol of glucose: (12.01 g * 6) + (1.008 g * 12) + (12.01 g * 6) = 156.216 g/mol

Using dimensional analysis you can find the mass of 2.35 mol:

2.35 mol * 156.216 g/mol = 367.1076 g ~ 3.67 * 10² g (using three significant figures)