Question

Separation techniques were performed on a sample containing only sand and salt. The mass of the initial sample was 10.50 g. After the separation, 3.10 g of sand and 4.00 g of salt were recovered. What is the percent recovery of sand and salt?

Answer 1

sand mass = 3.10 g

salt mass = 4.00 g

total sample mass = 10.50 g

sand mass percent = (sand mass / total mass ) x 100

                                = (3.10 / 10.50) x 100

                                = 29.52 %

sand mass percent = (salt mass / total mass ) x 100

                                = (4.00 / 10.50) x 100

                                = 38.09 %