Question

3. How many grams of

CoCl, in 1/2 Liter would be
used to make a 1.0 molar
solution?

Answer 1

47 grams CoCl needed.

Step-by-step explanation:

1 mole weight of CoCl in 1 Liter solution => 1.0 molar solution

∴ 1/2 mole weight of CoCl in 1/2 Liter solution => 1.0 molar solution.

1/2 mole weight of CoCl = 1/2(94 g/mole) = 47 grams CoCl needed.