Question: how many grams of sodium chloride are needed to prepare 500ml of a 5 solution?
Answer: Step 1: 1 molar solution of NaCl=58.4 g of NaCl in 1 litre of distilled water. Step 2: 5 molar solution of NaCl= 58.4*5 g of NaCl in 1 litre of distilled water. Step 3: 5 molar solution of NaCl=(58.4*5)/2 g of NaCl in 500 ml of distilled water. This is your final answer.