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InterviewSolution
| 1. |
You need to prepare a 50 ml of 10% NaCl solution. How much NaCl is needed? |
| Answer» NACL solution means that there is 10 g NaCl in 100 ML of the solution. The MASS of NaCl required to MAKE 50 mL solution is calculated as follows:10 g NaCl100 mL solution×50 mL solution=5 g NaClThus, 5 g NaCl should be in the 50 mL of 10% NaCl solution., | |