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1. How to prepare 15ml of 20% w/v NaCl solution? 2. How many grams of NaCl are required to prepare 45g of NaCl solution (35% w/w)? 3. Calculate the molarity of 0.289 moles of FeCls dissolved in 120 ml of solution 4. How many moles of NaCl are present in 600 ml of a 1.55 M NaCl solution? 5. What is the molarity of 650 ml of solution containing 63 grams of NaC1? 6. How many grams of CaCO, are needed to produce 500 ml of 1.66 M CaCO, solution? How to prepare this solution? 7. What volume of a 0.88 M solution can be made using 130 grams of FeCh? 8. Prepare 70ml of 1.5M NaCl solution from a 3M solution. 9. What is the volume of a 2 M H₂SO4 solution prepared using 3 ml of 6 M H₂SO4 solution? 10. What is the molarity of a 17 ml solution used to prepare 65 ml of 2.4 M solution?