Question

Use the data below to calculate the Rf values for the ink in the following samples.
Chromatogram number 1
Solvent front = 5.6cm
Sample X distance moved = 3.5cm Rf value =______________
Sample Y distance moved = 2.9cm Rf value =______________
Sample Z distance moved = 4.8cm Rf value =______________
Chromatogram 2
Solvent front = 6.8cm
Sample P distance moved = 2.5cm Rf value =______________
Sample Q distance moved = 5.8cm Rf value =______________
Sample R distance moved = 1.8cm Rf value =______________
Which two samples are the same? _______ & _________

Answer 1

Answer:

i) What is the central nervous system made of?

Answer 2

Explanation:

What is the central nervous system made of ?