Answer to Question #329691 in Chemistry for rae

Question

If 7.72 g

7.72 g of 

CuNO3 is dissolved in water to make a 0.800 M

0.800 M solution, what is the volume of the solution in milliliters?

Answer 1

Solution:

The molar mass of CuNO₃ is 125.55 g/mol

Therefore,

Moles of CuNO₃ = (7.72 g CuNO₃) × (1 mol CuNO₃ / 125.55 g CuNO₃) = 0.0615 mol CuNO₃

Molarity of CuNO₃ = Moles of CuNO₃ / Volume of CuNO₃ solution

Therefore,

Volume of CuNO₃ solution = Moles of CuNO₃ / Molarity of CuNO₃

Volume of CuNO₃ solution = (0.0615 mol) / (0.800 M) = 0.076875 L = 76.88 mL

Volume of CuNO₃ solution = 76.88 mL

Answer: The volume of the solution is 76.88 mL