Question

a student was given a 5.00 gram sample of a mixture containing three substances, a, b, and c. using the physical and chemical properties of each component, the student recovered 2.51 grams of substance a, 1.36 grams of substance b, and 0.98 grams of substance c. calculate the percent composition of a, b, and c. calculate the percent recovery.

Answer 1

To calculate the percent composition, divide the mass of each substance by the total mass of the mixture. The percent recovery is calculated by dividing the recovered mass of each substance by the initial mass of the substance.

Step-by-step explanation:

To calculate the percent composition of substances A, B, and C, divide the mass of each substance by the total mass of the mixture and multiply by 100.

For substance A: (2.51 g / 5.00 g) * 100 = 50.2%

For substance B: (1.36 g / 5.00 g) * 100 = 27.2%

For substance C: (0.98 g / 5.00 g) * 100 = 19.6%

To calculate the percent recovery, divide the recovered mass of each substance by the initial mass of the substance and multiply by 100.

For substance A: (2.51 g / 5.00 g) * 100 = 50.2%

For substance B: (1.36 g / 5.00 g) * 100 = 27.2%

For substance C: (0.98 g / 5.00 g) * 100 = 19.6%