Question

How many mols of silver nitrate should be used to create 0.250 L of a 0.500 M solution?

If you have 0.55 mols of NaCl and need to make a solution that is 0.0100 M, what volume of solution will you need?

Answer 1

Answer:

1. 0.125mole of silver is required

2. 55mL of NaCl will be required

Explanation:

1. Molarity = 0.5M

Volume = 0.250 L

Mole =?

Molarity = mole /Volume

Mole = Molarity x Volume

Mole = 0.5 x 0.250

Mole = 0.125mole

Therefore, 0.125mole of silver is required

2. Molarity = 0.01M

Mole = 0.55mole

Volume =?

Molarity = mole /Volume

Volume = mole /Molarity

Volume = 0.55/0.01

Volume = 55mL

Therefore, 55mL of NaCl will be required