Please help me solve these two problems. How do you solve them step by step?
P18. (Sec. 11.5) How many grams of toluene, C7H8, must be added to 500 grams of liquid benzene, C6H6, in order to increase its boiling point to 81.5 oC? Toluene is a non-electrolyte compound. (Kb of Benzene- 2.5 C/m) & (B.P. of Benzene 80 oC) a) 12.3 grams b) 33.7 grams c) 1.15 grams d) 6.63 grams e) 27.6 grams P19. (Sec. 11.5) A solution is prepared by dissolving 125 grams of ethylene glycol, C2H602, in 550 grams of water. What is the change in temperature (AT) and the new freezing point of this aqueous solution? Ethylene glycol is a non-electrolyte compound. (Kr of Water- 1.86 oC/m) a) AT 3.40 OC & F.P 3.40 oC b) AT 2.00 °C & F.P 2.00 °C c) AT 1.66 C & F.P 1.66 OC d) AT 5.07 OC & F.P 5.07 OC e) AT 6.81 °C & F.P 6.81 °C