Question

QUESTION 38 A solution is made up of 5.45 grams of an unknown solid in 100 grams of bromoform (K-14.4). The solution has a freezing point 4.32 °C lower than the freezing point of Bromoform. What is the molar mass of the unknown solid (g/mole)? Answer in 3 significant figures and do not include units. QUESTION 39 P,000 Calculate the enthalpy change for the reaction P.O.+ 2018) Given the following enthalpies of reaction: 30% AH-1640.1 kJ P РО) PO P+ 50 AH 2940.1 kJ P.O.+ 2020 P.0100 AH ? Be sure to include the sign in your answer. Do not include units and report 2 significant figures. Example: a number such as 8700 is written with 2 significant figures, the last 2 zeros are not significant figures,