how would each error affect the molar mass of antifreeze ( too high, too low, no effect.

Question

a) the thermometer used actually read 1.4 too high
b) after measuring the 50 of distilled water to make an antifreeze solution you spilled some.
c)you lost some of you antifreeze solution before adding it to the water.
d)you spilled some solution before you could determine the freezing point.

2) draw a phase diagram of a pure substance and show how an addition solute would affect the diagram