Soru
18) A solution contains 30 ppm of some heavy metal and the density of the solution is 1.00g/mL This means that __ A) 100 g of the solution contains 30 g of heavy metal B) 100 gof the solution contains 30 mg of heavy metal C) the solution is 30% by mass of heavy metal D) there are 30 mg of the heavy metal in 1.0 L of this solution E) the molarity of the solution is 30 m Answer: D
Çözüm
4.6
(317 Oylar)
Göktuğ
Elit · 8 yıl öğretmeni
Uzman doğrulaması
Cevap
To determine the correct answer, let's analyze the given information:1. The solution contains 30 ppm (parts per million) of some heavy metal.2. The density of the solution is 1.00 g/mL.PPM stands for parts per million, which means that there are 30 parts of the heavy metal in 1,000,000 parts of the solution.To find the amount of heavy metal in 100 g of the solution, we can use the following calculation:30 ppm = 30 parts of heavy metal / 1,000,000 parts of solutionTo find the amount of heavy metal in 100 g of the solution, we can multiply the density of the solution (1.00 g/mL) by the volume of the solution (100 g / 1.00 g/mL = 100 mL).Since 1 mL of the solution contains 30 parts of the heavy metal, we can calculate the amount of heavy metal in 100 mL of the solution:30 parts of heavy metal / 1,000,000 parts of solution * 100 mL of solution = 3 mg of heavy metalTherefore, the correct answer is:B) 100 g of the solution contains 30 mg of heavy metal