Answer to Question #188460 in General Chemistry for Crislyn Mae

Question

1. Suppose you added 4.0 moles of sugar to 10.0 L of solution. Calculate the molar concentration of the solution. 

2. A sample of water taken from a nearby lake is found to have 0.0035 mol of salt in a 100mL 

solution. Determine the molar concentration of the solution in the lake. 

3. You dissolve 30.0g of sodium sulfate (Na2SO4(s)) into 300mL of water. Calculate the molar 

concentration of the solution. 

4. What is the Molality of a solution containing 7.78g of Urea [(NH2)2CO2] in 203g of water? 

Answer 1

1.Molarity =0.4M

2.Molarity =3.5M

3.Molarity =0.7M

4.Molarity =2.56M