Write chemical formulas for the following molecular compounds: (a) phosphorus tribromide, (b) dinitrogen tetrafluoride, (c) xeno
1 answer:
Answer and Explanation:
(a) Phosphorus tribromide : The chemical formula for phosphorus tribromide is
(b) Dintrogen tetrafluoride : The chemical formula for dinitrogen tetrafluoride is
(C) Xenon oxide : the chemical formula for xenon oxide is
(D) Selenium trioxide ; the chemical formula for selenium trioxide is
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Answer: The freezing point of 3.46 gram of a compound X in 160 gram of benzene is
Explanation:
The relation of density and molar mass is:
where
d = density = 3.27 g/ L
P = pressure of the gas = 773 torr = 1.02 atm (760 torr = 1atm)
M = molar mass of the gas = ?
T = temperature of the gas =
R = gas constant =
The relation of depression in freezing point with molality:
= depression in freezing point =
=
= freezing point constant = 5.1
m = molality =
Thus the freezing point of 3.46 gram of a compound X in 160 gram of benzene is