Question

A dioxin-contaminated water source contains 0.085% dioxin by mass. How much dioxin is present in 2.5 L of this water? Assume a density of 1.00 g/mL.

Answer 1

2.125g of dioxin

multiply 2500mL by 1.00g/mL to find the mass of the water. giving you 2500g of water. multiply 2500g by 0.00085 which gives you 2.125 grams