Which calculation below represents the mass of
copper(II) nitrite (MM = 155.6 g/mol) should be
weighed out to produce 250 ml of a 0.50 M solution?

Answer : The mass of in the solution is, 19.4 grams.

Explanation : Given,

Molarity of solution = 0.50 M

Volume of solution = 250 mL

Molar mass of = 155.6 g/mole

Molarity : It is defined as the number of moles of solute present in one liter of volume of solution.

Formula used :

Now put all the given values in this formula, we get:

Therefore, the mass of in the solution is, 19.4 grams.