Calculate the mass of O

Question

 A certain organic compound has a solubility in acetonitrile of 72.6 g/L at 5. C. Calculate the mass of O that's dissolved in 300. mL of a saturated solution of O in acetonitrile at this temperature. Be sure your answer has the correct unit symbol and 3 significant digits.

Answer 1

Solubility of O in acetonitrile @ 5º = 72.6 g/L

72.6 g/L x 0.300 L = 21.8 g of O in 300 ml (0.300L)