organic chemistry lab questions help

2) The distribution coefficient between methylene chloride and water for solute Y is 12. An amount of 102.0 g of Y is dissolved in 120 mL of water. 

a) What weight of Y would be removed from water with a single extraction with 120-mL of methylene chloride? Report to 1 decimal place. (show calculations) 

b) What weight of Y would be removed from water (the original solution) with two successive extractions with 60-mL portions each of methylene chloride? Report to 1 decimal place. (show calculations) 

3) You have 91.0 g of solute Q dissolved in 140-mL of water. The distribution coefficient between ether and water for solute Q is 10. What volume of ether would you need to extract 80.0 g of solute Q in one extraction from the original 91.0g dissolved in 140 mL water? Provide answer to closest mL. (Show calculations)