Question

Determine the mass in grams of the following substances:

0.692 mol C8H18

3.01x1023 mole Al(NO3)3

4. 85x10-3 mol H2O2​

Answer 1

Explanation:

mass in g = number of moles × molecular formula

1. C8H18 in g = 0.692 × 114.23

                      = 79.04 g

2.  Al(NO3)3 = 3.01 × 10²³ × 213

                     = 6.4 × 10²⁵ g

3.  85x10-3 =  85 x 10⁻³ × 34.01

                  = 2.89 g