1. How do you make a 2.2M NaCl solution in the amount of 340µl. The stock solution is 5.7M
2. If 25 ml of solution A is needed to make a 0.7 liters with a final concentration of 1.5%, what was the concentration percentage of the stock solution?
3. In the lab, Jose made a 2X TBE working solution in the amount of 1.0 x 10^3 ml. He remembered he started with a 10X TBE but did not write down the amount. Calculate the amount of TBE Jose used to make his working solution.