Answer to Question #250523 in General Chemistry for Zubaria

Question

How to prepare 800 ml of 2 mole NaCl solution?

Answer 1

The way to do this depends on you knowing what the units mean. The capital M means moles per liter or mole/Liter. It's a concentration unit.

So, you next need to make the units of the volume you want, be the same as the volume unit in the concentration, and here it isn't yet, it's 800 mL or 800 milliliters. Since the prefix milli means one thousandth, you need to take the 800 mL and multiply by 1Liter/ 1000 mLiter and that comes out 0.800 Liters.

Now, (0.800 Liters) x (2moles/ Liter) x (58.44 grams/ moles) gives your answer.

= 0.8× 2× 58.44= 93.504