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Physical Chemistry
Page 9
Questions (658)
Explain how the addition of a solute affects the vapor pressure of the solvent.
3 answers
asked by
kendra
973 views
The boiling point elevationof an aqueous sucrose solution is found to be 0.39 degrees Celsius. What mass of sucrose (molar
3 answers
asked by
Sharon
965 views
Can 10.ml of glacial acetic acid mixed with 0.50 g of benzoic acid crystals (dissolved) freeze? And if so, what is the freezing
2 answers
asked by
Brent
946 views
What is the vapor pressure at 23 ¢ªC of a solution of 1.20 g of naphthalene, C10H8, in 25.6 g of benzene, C6H6? The vapor
2 answers
asked by
george
960 views
water has a vapour pressure of 23.76 torr at 25C.what is the vapour pressure of a solution of sucrose ,if its mole fraction is
2 answers
asked by
sumie
939 views
Why was sublimation performed under reduced pressure?
1 answer
asked by
Vivian
924 views
Name and describe two colligative properties that are affected by solute concentration, then list whyone would be affected in
4 answers
asked by
Carrie
947 views
The process in which an ion or molecule is surrounded by solvent molecules arranged in a specific manner is called?
2 answers
asked by
Dawn
926 views
A freezing point depression experiment was conducted using cyclohexane as the solvent. The freezing point of pure cyclohexane is
3 answers
asked by
Danielle
916 views
Calculate the molar mass of a non-electrolyte that lowers the freezing point of 25.0 g of water to - 3.9 oC when 4.27 g of the
2 answers
asked by
Danica
906 views
the freezing point of benzene C6H6 is 5.5000C at 1 atmosphere.
In a laboratory experiment, students synthesized a new compound
3 answers
asked by
mickey
932 views
How can the Tyndall effect be used to distinguish between a colloid and a solution?
Can the presence of Brownian motion
4 answers
asked by
Kim
923 views
Benzene has a vapor pressure of 100.0 Torr at 26°C. A nonvolatile, nonelectrolyte compound was added to 0.309 mol benzene at
4 answers
asked by
Angelica
909 views
the standard molar enthalpy and entropy of the denaturation of a certain protein are 512 kj/mol and 1.60 kj/K. mol, respectively
2 answers
asked by
Cece
885 views
Determine the solubility of FeS at 25 degrees Celsius
4 answers
asked by
Evie
889 views
The solubility of strontium oxide, SrO, in water is 22.8 g per 100 mL at 100 °C and 0.69 g per 100 mL at 30 °C. Is the
2 answers
asked by
Alex
865 views
The specific gravity of a sample of concentrated nitric acid is 1.42. What is the volume in liters at 20oC
occupied by 145.3 g of
3 answers
asked by
Esmeralda
915 views
1) The molecular mass of a substance was determined by the freezing point depression technique. The minimum data required for
4 answers
asked by
Hannah
897 views
the vapour pressure of 2.1%solution of non electrolyte in water at 100 degree celsius is 755 mm Hg.calculate the molar mass of
2 answers
asked by
malvika
861 views
Explain the process of diffusion and why it is energetically favorable.
1 answer
asked by
Alexa
868 views
why would a molecule change color under acidic or basic conditions?
2 answers
asked by
Cristian
828 views
Assuming ideal behavior, determine the mole fraction of acetone in a solution of acetone and water if the vapor pressure of
2 answers
asked by
Karla
861 views
Determine how much water would be present in a 10 tonne sample of lignite, has a moisture content of 65%, before crushing and
2 answers
asked by
sasha
845 views
The Henry’s Law constant for N2 in water at 30 oC is 6.0 x 10-4 M/atm, calculate the
solubility of nitrogen gas in water at a
2 answers
asked by
S
846 views
Raoul Pictet, the Swiss physicist who first liquefied oxygen, attempted to liquefy hydrogen. He heated potassium formate, KCHO2,
3 answers
asked by
caroline
846 views
how does(what is the chemistry involved) k2so4 raise the boiling point of h2so4
1 answer
asked by
stephen
813 views
Sometimes as a solute dissolves in a solvent, the solute molecules dissociate to some extent. Sometimes solute molecules
2 answers
asked by
Paula
841 views
what is the procedure for determining the boiling point of 1 M solution of sugar,urea,glucose,NaCl,BaCl2,AlCl3
4 answers
asked by
mrunal
804 views
why is the solubility of benzoic acid dependent on pH?
2 answers
asked by
casey
805 views
What is the solubility of calcium iodide (in g per 100 cc of cold water)?
2 answers
asked by
Jeanna
825 views
Molar Mass of a Condensable vapor:
The significance of immersing the flask as far as possible into the hot water bath? = Is to
2 answers
asked by
AhmadM
790 views
Data:
freezing point of pure cyclohexane: 6.0 degrees celcius Freezing point of unknown soluton: 1.6 degrees celcius weight of
2 answers
asked by
Tina
813 views
Would the molar mass become high or low if water vapors condensed under the aluminum foil before the final weighing?
2 answers
asked by
Linda
788 views
Why does H2O + Sugar have a higher boiling point than Water?
I said that H20 + Sugar has a solute of sugar which absorbs some of
4 answers
asked by
Chopsticks
808 views
The ion product Of D2O is 1.35x 10^-15 at 25 degrees C. For a solution to be acidic the PDF must be what?
2 answers
asked by
court
791 views
you are conducting a freezing-point determination in the laboratory by using an aqueous solution of KNO3. The observed freezing
1 answer
asked by
Anonymous
835 views
What is the freezing-point depression of water in a solution of 100g of sucrose, C12 H22 O11, and 500g of water? (Molar freezing
2 answers
asked by
Anonymous
793 views
The vapor pressure of benzene (C6H6) at 25 degrees C is 95.1 mm Hg. What is the vapor pressure of benzene above a solution in
2 answers
asked by
Jacqueline
815 views
2) Find the expression for the solubility product of silver oxalate Ag2C2O4).
3 answers
asked by
Anonymous
759 views
I need to find out Molar solubility of CuS. How many grams of CuS are present in 15.0 L of a saturated CuS solution,
2 answers
asked by
Ashley
769 views
What mass of sucrose, C12H22O11, should be added to 75.0 g H2O to raise the boiling point to 100.35 degrees C?
Molal boiling
2 answers
asked by
JJ
787 views
What is the freezing point of a solution of AlCl3 that contains 55.0 g AlCl3 dissolved in 390 g of water?
1 answer
asked by
Hayden
765 views
A volatile liquid sample is placed in an Erlenmeyer flask that has been sealed except for a tiny hole that allows vapor to
2 answers
asked by
Ceamus Angelina
782 views
Predict the boiling point of the following compound using Trouton's Rule:
Heat of vaporization/Tb= 80 J/K Carbon tetrachloride
2 answers
asked by
Brunette
748 views
Use standards entropies and heats of formation to calculate delta Gf at 25C for
a. cadmium (II) chloride (s) b. methyl alcohol,
2 answers
asked by
Olivia
751 views
In a coffee-cup calorimeter, 1.91 g of NH4NO3 is mixed with 75.0 g of water at an initial temperature of 25.00oC. After the
3 answers
asked by
Shawn
737 views
Calculate the freezing point and boiling point of a solution that contains 57.0 g NaCl and 53.4 g KBr dissolved in 750.3 mL H2O
3 answers
asked by
Anonymous
752 views
What substances will increase the molar solubility of nickel(II) phosphate in a saturated solution?
1 answer
asked by
Anonymous
741 views
Analysis of aluminum-zinc alloy
Mass of gelatin capsule 0.1284 g ambient temp. 22c mass of capsule plus alloy sample 0.3432g
2 answers
asked by
niki
744 views
What is the freezing point of a soluton is which 10.0 g of naphthalene [C10H8(s)] is dissolved in 50.0 g of benzene [C6H6(l)]?
Ex
2 answers
asked by
Jacqueline
747 views
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Parent Categories (3)
Chemistry
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Science/Chemistry