Answer:
The correct answer is 179.94 g/mol.
Explanation:
Based on the given question, the boiling point of diethyl ether us 34.500 degree C at 1 atm pressure. The boiling point of the solution given is 35.100 degree C. The Kb of diethyl ether given is 2.02 degree C/m. The weight of the compound given is 14.94 grams, the weight of the solvent (diethyl ether) is 279.5 grams.
The molecular weight of the compound can be determined by using the formula,
deltaTb = Kb * molality
Tb-To = Kb * molality
Tb-To = Kb*wt/mol.wt*1000/w (solvent)
35.100 - 34.500 = 2.02 * 14.94 / mol. wt * 1000 g / 279.5 g
0.6 = 2.02 * 53.45/ mol.wt
mol. wt = 2.02*53.45/0.6
mol. wt = 179.94 g/mol
Hence, the molecular weight of the compound is 179.94 gram per mol.
A physical property is an aspect of matter that can be observed or measured without changing it. A chemical property may only be observed by changing the chemical identity of a substance.
Molar mass of C8H10N2O4 (Mimosine) is 198.18 g/mol
Solubility product constants are values to describe the saturation of ionic compounds with low solubility. It is represented by Ksp and is the product of the concentration of the dissolved ions to the power of its stoichiometric coefficient. We do as follows:
Be(OH)2 = Be2+ + 2OH-
Ksp = [Be2+][OH-]^2
<span>6.92 × 10^-22 = x(2x)^2
x = 5.57x10^-8 mol /L
[Be(OH)2] = x = </span>5.57x10^-8 mol /L = 2.397x10^-6 g/L
They both contain acids, which makes them sour