![SOLVED: Explain how to prepare standard solutions (5 ml each) of NaCl with the following concentrations: 10, 20, 30, 50, 70 ppm. The stock solution has a concentration of 0.05% w/v. (5 marks) SOLVED: Explain how to prepare standard solutions (5 ml each) of NaCl with the following concentrations: 10, 20, 30, 50, 70 ppm. The stock solution has a concentration of 0.05% w/v. (5 marks)](https://cdn.numerade.com/ask_previews/fc48134e-96b7-4b67-b337-532568c3961f_large.jpg)
SOLVED: Explain how to prepare standard solutions (5 ml each) of NaCl with the following concentrations: 10, 20, 30, 50, 70 ppm. The stock solution has a concentration of 0.05% w/v. (5 marks)
![PPM solution | How to prepare 5 ppm, 10 ppm, 15ppm, 20ppm, 40ppm,1000ppm solutions! Stock Solution - YouTube PPM solution | How to prepare 5 ppm, 10 ppm, 15ppm, 20ppm, 40ppm,1000ppm solutions! Stock Solution - YouTube](https://i.ytimg.com/vi/4xZc7z2crJo/sddefault.jpg)
PPM solution | How to prepare 5 ppm, 10 ppm, 15ppm, 20ppm, 40ppm,1000ppm solutions! Stock Solution - YouTube
![SOLVED: Calculate the number of mL of a 50 ppm solution needed to prepare 50 mL of a 6.4 ppm solution. SOLVED: Calculate the number of mL of a 50 ppm solution needed to prepare 50 mL of a 6.4 ppm solution.](https://cdn.numerade.com/ask_previews/522d4264-e8cb-4c03-8c34-224f9d555767_large.jpg)