How many grams of solid chemical are needed to make 500 ml of a 5 m sodium chloride solution (nacl)? molecular weight of sodium chloride is 58 g/mol. round your answer to the nearest whole number. show your work; circle your answer.
percent solutions. 3 pts. how many grams of solid sodium chloride are needed to make 100 ml of a 6% nacl solution? show your work; circle your answer
dilutions from concentrated stock. 3 pts. you are asked to make 4 l. of a 0.5 m solution using a 5 m concentrated stock. how much stock do you need? show your work; circle your answer.
serial dilutions. 1 pt. a researcher prepares serial dilutions of 2.5 m sodium chloride. she adds 1 ml nacl to 9 ml of water in tube # she repeats this 4 more times. what is the concentration of nacl in the final dilution (tube #5)? show your work.