Question

CHM2045L student Charles finds the mass of his stacked coffee cups (including the stir bar) to be 24.02 g. He adds 33.63 mL of deionized water (assume the density = 1.00 g/mL) to the coffee cup device, followed by 3.68 g of potassium nitrate (KNO3) to the coffee cup calorimeter device. The total mass of his solution is ________ g. Provide your answer to two digits after the decimal.

Answer 1

volum of deionised water = 33.63 mL

Density of deionised water = 1.00 g/mL

the mass of deionised water = 33.63 x 1.00 g

                                             = 33.63 g

mass of potassium nitrate (KNO₃) added = 3.68 g

mass of coffee cup calorimeter device = 24.02 g

total mass of the solution = 33.63 + 3.68 + 24.02

total mass of the solution   = 61.33 g