Write a hypothesis for Section 2 of the lab, which is about the effect of the angle of insolation on the amount of heat a materi
1 answer:
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Answer:
Molecular weight of nicotine is 162 g/mol
Explanation:
Osmotic pressure () for nonelectrolyte is expressed as-
where C is molarity of solution, R is gas constant and T is temperature in Kelvin scale.
If molecular weight of nicotine is W g/mol then number of moles of nicotine present in solution is equal to moles
So, molarity (C) of solution =
R is equal to 0.082 L.atm/(mol.K), T is 298 K and ) is 7.55 atm
So,
or, W = 162
So molecular weight of nicotine is 162 g/mol
Answer:
The diameter of the oil molecule is .
Explanation:
Mass of the oil drop =
Density of the oil drop =
Volume of the oil drop: v
Thickness of the oil drop is 1 molecule thick.So, let the thickness of the drop or diameter of the molecule be x.
Radius of the oil drop on the water surface,r = 41.8 cm = 0.418 m
1 cm = 0.01 m
Surface of the sphere is given as: a =
Volume of the oil drop = v = Area × thickness
The thickness of the oil drop is and so is the diameter of the molecule.