1. cryptoxanthin is the most polar compound on the TLC plate. whats the approx. Rf value of cryptoxanthin? which compound is the least polar? 2)if pheophytin a is TLC spot B whaat spot represents chlorophyll B?

sorry I just need the points

1. for the first question, we must find the mass of the anhydrous salt, mgso₄. the molar mass for mgso₄·7h₂o is 246.47 g/mol, while that of mgso₄ is 120.37 g/mol.7.834 g mgso₄·7h₂o * 1 mol mgso₄·7h₂o/246.47 g * 1 mol mgso₄/1 mol mgso₄·7h₂o * 20.37 g mgso₄/mol = 0.647 g mgso₄

2. mass of water = mass of sample - mass of anhydrous salemass of water = 7.834 - 0.647 = 7.19 gpercent water in hydrate = 7.19/7.834 * 100 = 91.74%

it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.