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11 Nov 2019
1. CU(NO3)2.3H20 (FW 241.58) will be used to prepare your copper stock solution. How much will you need to make up 250 ml of stock solution containing 250 μg/ml (= 250 ppm) as copper (250ppm Cu)? 2. Your stock solution will be diluted to prepare standard solutions for calibration of the photometer. Calculate the volumes of 250 μg/ml stock solution required to prepare 50 ml each of solutions with concentrations of 5, 10, 15, 20 and 25 μg/ml
1. CU(NO3)2.3H20 (FW 241.58) will be used to prepare your copper stock solution. How much will you need to make up 250 ml of stock solution containing 250 μg/ml (= 250 ppm) as copper (250ppm Cu)? 2. Your stock solution will be diluted to prepare standard solutions for calibration of the photometer. Calculate the volumes of 250 μg/ml stock solution required to prepare 50 ml each of solutions with concentrations of 5, 10, 15, 20 and 25 μg/ml
Trinidad TremblayLv2
22 Oct 2019