4. In an experiment to separate a mixture of organic liquid "m" (B. P. 56°C) and liquid "n" (B. P. 118°C) a student set up the apparatus shown below.
Thermometer
Water in
Cork
Water out
Mixture of
M and N
111
Distillate
a) Identify two mistakes in the set up.
(2mks)
b) What method would the student use to test the purity of the distillates?
(1mk)​

What must happen before a body cell can begin mitotic cell division

Achemistry student weighs out 0.306 g of citric acid (h3c6h5o7), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with 0.1000 m naoh solution. calculate the volume of naoh solution the student will need to add to reach the final equivalence point. be sure your answer has the correct number of significant digits.

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?