Prior to this people believed that the earth was the center of the universe, with this revolution the belief was the earth revolved around the sun and was not the center of the universe<span>
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Answer:
A average is a number expressing the central or typical value in a set of data. add up all the numbers, then divide by how many numbers there are.
Explanation:
<em><u>Larger molecules take longer to move up the chromatography paper or TLC plate, whereas smaller molecules are more mobile. Likewise, the polarity of the molecules can affect how far the spots travel, depending on the type of solvent used.</u></em>
We use the concept on colligative properties to calculate the number of moles in the system above. We calculate as follows:
ΔT = -kf(m)
where ΔT is the change in freezing point, kf is the freezing point depression and m is the molality of the solution.
-10 = -1.86(m)
m = 5.37 mol/kg
number of moles = 5.37 (4.50) = 24.19 moles of methanol
Answer:
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