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Question 1 (1 point) Saved A freezing point of a substance is the same temperature as...
uestion 5 (1 point) Saved The volume of a gas is _____ to temperature if the...
uestion 5 (1 point) Saved The volume of a gas is _____ to temperature if the pressure remains the same. Question 5 options: not related proportional equal inversely proportional Question 6 (1 point) Saved The volume of a gas is _____ to pressure if the temperature remains the same. Question 6 options: proportional not related inversely proportional equal Question 7 (1 point) Saved Why does a hairspray can explode if placed in a fire? Question 7 options: The temperature increase...
Freezing Point Depression: Determination of the Molar Mass of an Unknown Substance Laboratory Record Unknown Identifier...
Freezing Point Depression: Determination of the Molar Mass of an Unknown Substance Laboratory Record Unknown Identifier #4 (All unknowns are nonelectrolytes, soi-1) Determination of the freezing point of pure l-butyl alcohol: (Record time-temperature data on the next page) 29.62 1. Mass of empty test tube 2. Mass of test tube and t-butyl alcohol after determination of freezing point of pure t-butyl alcohol 50.25 20.71 3. Mass of t-butyl alcohol Determination of the molar mass of an unknown: (Record time-temperature data...
Freezing Point Curves pure solvent AF D el B TEMPERATURE solution + D E TIME Match...
Freezing Point Curves pure solvent AF D el B TEMPERATURE solution + D E TIME Match the following: Freezing point depression The effect of supercooling Freezing point of solution Freezing point of pure solvent Region where liquid is cooling Submit Answer Tries 0/5
a. (2) On Graph 1, extrapolate and give the freezing point of the pure solvent to...
a. (2) On Graph 1, extrapolate and give the freezing point of the pure solvent to the nearest 0.1°C. Show the extrapolation on graph 1. b. (2) On Graph 2, extrapolate and give the freezing point of the solution to the nearest 0.1 °C. Show the extrapolation on graph 2. c. Determine the change in freezing point (AT) between pure solvent and solution? (3) d. (7) If the molal freezing point depression constant (KI) for the solvent is 1.86 kg°C/mol,...
What process occurs when the temperature of a substance is at Point A increased (at constant...
What process occurs when the temperature of a substance is at Point A increased (at constant pressure) until the substance is at Point B? A. 1 B. sublimation freezing melting vaporization condensation
You obtained the following graphical data from two experimental runs to determine the freezing point depression...
You obtained the following
graphical data from two experimental runs to determine the freezing
point depression constant for a pure solvent. The solution was made
up by adding 3.025 g of naphthalene, C10H8,
to 45.320 g of pure solvent.
1.What is the freezing point temperature of the pure solvent (in
oC)?
2.What is the solution freezing point temperature (in
oC)?
3.What is the freezing point depression, Tfp (in
oC)?
4.What is the molar mass of naphthalene (in g/mol)?
5.How many...
Need help with freezing point depression expeiment volume of acetic acid 30 volume of unknown solute...
Need help with freezing point depression expeiment volume of acetic acid 30 volume of unknown solute in solution1 1.5 volume of unknown solute in solution 2 1.5 freezing point of pure acetic acid 16.3 freezing point of solution 1 14.5 freezing point of solution 2 11.3 average molar mass of unknown solute Calculations for Part 1 The density of acetic acid is 1.049 g/mL and Kf(acetic acid) =3.90 °C·kg/mol The density of the unknown is 0.791 g/mL. 1.Calculate the masses...
. 1. Is the melting point of substance A (a) greater than, (b) less than or...
.
1. Is the melting point of substance A (a) greater than, (b)
less than or (c) equal to the
melting point of substance B?
Explain your reasoning.
2. Is the specific heat of substance A in its solid state (a)
greater than, less than, or (c)
equal to the specific heat of substance B in its solid
state?
Explain your reasoning.
3. Is the latent heat of fusion of substance A (a) greater than,
(b) less than or (c)...
Question 2 (1 point) Substance A has a higher normal boiling point than substance B. Therefore,...
Question 2 (1 point) Substance A has a higher normal boiling point than substance B. Therefore, substance A has a higher latent heat of vaporization, and a plot of the natural ogarithm of vapor pressure vs. the inverse of temperature for substance A will have a steeper slope than that of substance B. True False Question 3 (1 point) The term -A/T in the Antoine equation is dimensionless. Perform a unit analysis on this term What are the units for...
i cant figure out #8 please help. thank you. also if you could help with #6...
i cant figure out #8 please help. thank you.
also if you could help with #6 it would be greatly
appreciated
CALCULATIONS Show all work. 1. Mass of acetic acid, g 19.66g 2. Mass of unknown sample in acetic acid solution.g 2.00 g 3. Generate a cooling curve by plotting temperature vs time data on a single graph Plot on graphing paper or use a computer program and print plot. See Below 4. Freezing point of pure acetic acid solvent...
Freezing Point Depression: Determination of the Molar Mass of an Unknown Substance Laboratory Record Unknown Identifier #4 (All unknowns are nonelectrolytes, soi-1) Determination of the freezing point of pure l-butyl alcohol: (Record time-temperature data on the next page) 29.62 1. Mass of empty test tube 2. Mass of test tube and t-butyl alcohol after determination of freezing point of pure t-butyl alcohol 50.25 20.71 3. Mass of t-butyl alcohol Determination of the molar mass of an unknown: (Record time-temperature data...
Freezing Point Curves pure solvent AF D el B TEMPERATURE solution + D E TIME Match the following: Freezing point depression The effect of supercooling Freezing point of solution Freezing point of pure solvent Region where liquid is cooling Submit Answer Tries 0/5
a. (2) On Graph 1, extrapolate and give the freezing point of the pure solvent to the nearest 0.1°C. Show the extrapolation on graph 1. b. (2) On Graph 2, extrapolate and give the freezing point of the solution to the nearest 0.1 °C. Show the extrapolation on graph 2. c. Determine the change in freezing point (AT) between pure solvent and solution? (3) d. (7) If the molal freezing point depression constant (KI) for the solvent is 1.86 kg°C/mol,...
What process occurs when the temperature of a substance is at Point A increased (at constant pressure) until the substance is at Point B? A. 1 B. sublimation freezing melting vaporization condensation
You obtained the following
graphical data from two experimental runs to determine the freezing
point depression constant for a pure solvent. The solution was made
up by adding 3.025 g of naphthalene, C10H8,
to 45.320 g of pure solvent.
1.What is the freezing point temperature of the pure solvent (in
oC)?
2.What is the solution freezing point temperature (in
oC)?
3.What is the freezing point depression, Tfp (in
oC)?
4.What is the molar mass of naphthalene (in g/mol)?
5.How many...
.
1. Is the melting point of substance A (a) greater than, (b)
less than or (c) equal to the
melting point of substance B?
Explain your reasoning.
2. Is the specific heat of substance A in its solid state (a)
greater than, less than, or (c)
equal to the specific heat of substance B in its solid
state?
Explain your reasoning.
3. Is the latent heat of fusion of substance A (a) greater than,
(b) less than or (c)...
Question 2 (1 point) Substance A has a higher normal boiling point than substance B. Therefore, substance A has a higher latent heat of vaporization, and a plot of the natural ogarithm of vapor pressure vs. the inverse of temperature for substance A will have a steeper slope than that of substance B. True False Question 3 (1 point) The term -A/T in the Antoine equation is dimensionless. Perform a unit analysis on this term What are the units for...
i cant figure out #8 please help. thank you.
also if you could help with #6 it would be greatly
appreciated
CALCULATIONS Show all work. 1. Mass of acetic acid, g 19.66g 2. Mass of unknown sample in acetic acid solution.g 2.00 g 3. Generate a cooling curve by plotting temperature vs time data on a single graph Plot on graphing paper or use a computer program and print plot. See Below 4. Freezing point of pure acetic acid solvent...
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