Can someone help me to answer this correctly, please, and explain it. Please answer these 2 short questions, I don't have more money to buy more questions. These 2 questions are different.

1. a.

1. b.

A solution consists of 71.1g of silver nitrate (AgNO3),108.9g water, and has a volume of 123mL. in the solution. weightpercent=molality=molefraction=molarity=%mM A mannitol solution is 15.0%C6H14O6 by mass. It is simultaneously 0.867M at 20C. (a) Compute the density of this solution. Density=gcm3 (b) What volume of this solution should be used in preparing 1.94L of a 7.70102M mannitol solution? Volume=mL