Question

A sample of an unknown liquid is vaporized in a flask having a volume of 298...

A sample of an unknown liquid is vaporized in a flask having a volume of 298 mL at 100.0°C. The vapor has a mass = 0.687 g, and exerts a pressure = 775 torr. Calculate the gram molecular weight of the unknown liquid.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A student received a sample of an unknown liquid, which is then vaporized in a flask...
A student received a sample of an unknown liquid, which is then vaporized in a flask having a volume of 250 mL at 80.7 °C. The vapor has a mass = 0..7179 g, and exerts a pressure = 753 torr. Using the following list of volatile liquids, determine which one is the sample examined by the student. Possible samples: Methanol (CH4O) Isopropanol (C3H8O) Ethyl acetate (C4H8O2) Cyclohexane (C6H12) Acetone (C3H6O)
A student was assigned the task of determining the identity of an unknown liquid. The student...
A student was assigned the task of determining the identity of an unknown liquid. The student weighed a clean, dry 250-mL Erlenmeyer flask. The student completely filled the flask with water. He then proceeded to weigh the flask containing the water. Mass of 250-mL Erlenmeyer flask: 78.639 g Mass of 250-mL Erlenmeyer flask and water: 327.039 g Assuming the density of water is 1.00 g/mL at ambient temperature, what is the exact volume (in mL) of the 250-mL Erlenmeyer flask?...
Weight of flask and cover 128.7g Weight of flask with vapor 129.4g Pressure of vapor, mm...
Weight of flask and cover 128.7g Weight of flask with vapor 129.4g Pressure of vapor, mm Hg 760 Pressure of, atm 1 Mass of water in flask 250g Temperature of water in flask (boiling water) =92c Temperature of vapor in K= 92C+273=365K Temperature of water in the flask= 25t the volume of vapor in the flask 250 ML Using the volume of the flask (in liters) the temperature of the boiling-water bath (in kelvins), and the barometric pressure (in atmospheres),...
A student observes that a 126 mL dry flask with a foil cup weighs 50.162 g....
A student observes that a 126 mL dry flask with a foil cup weighs 50.162 g. The student then adds 5 mL of an unknown volatile liquid and heats flask in a boiling water bath at 99.2 C Until all liquid disappears. The flask, foil, and unknown after heating that is dry and cool weigh 50.610 g. The barometric pressure in the laboratory is 743.3 mmHg; the laboratory temperature averages 22.3 C; the vapor pressure of the unknown liquid is...
A 0.90 g sample of liquid water was introduced into an evacuated 2.00 L flask, which...
A 0.90 g sample of liquid water was introduced into an evacuated 2.00 L flask, which was then sealed and heated to 37°C. What percentage, by mass, of the water remained as liquid? [Vapor pressure of water at 37°C=48.2 torr.] A)0% B)82% C)90% D)18% E)10%
If 1.00 mL of water is placed in a 5.00 L closed flask at 26°C, what...
If 1.00 mL of water is placed in a 5.00 L closed flask at 26°C, what volume of water would remain as liquid after equilibrium is allowed to establish between the liquid water and the water vapor in the flask ? (The vapor pressure of water at 26°C is 25.2 torr, and the density of water at 26°C is 1.00 g/mL.)
Question 1) It was important that the flask be completely dry before the unknown liquid was...
Question 1) It was important that the flask be completely dry before the unknown liquid was added so that water present would not vaporize when the flask was heated. A typical single drop of liquid water has a volume of approximately 0.05mL. Assuming the density of water is 1.0g/mL, if 6 drops of water were left in the flask how many moles of water would this be? ** Write answer in decimal form to four decimal places.** Question 2) Using...
1. You are given a quantity of a volatile liquid substance and asked to determine its...
1. You are given a quantity of a volatile liquid substance and asked to determine its molecular weight. To do that, you place a sample of the liquid in a 200.0-mL flask and submerge the flask in a boiling water to vaporize all of the liquid. The vapor fills the flask and the excess escapes,. Now you cool the flask so that all the vapor in it condenses, and you weigh the flask and liquid. After you subtract the mass...
A flask has a volume of 157.6 mL . When filled with air at a pressure...
A flask has a volume of 157.6 mL . When filled with air at a pressure of 839.8 torr and a temperature of 25.70 ∘C, the flask and air have a mass of 49.781 g . When filled with carbon dioxide at the same temperature and pressure, the mass of the flask and CO2 is 49.893 g. Part A - What is the mass of the carbon dioxide gas in the flask (when the flask is filled with carbon dioxide)?
A 2.90 g sample of an unknown chlorofluorocarbon is decomposed and produces 573 mL of chlorine...
A 2.90 g sample of an unknown chlorofluorocarbon is decomposed and produces 573 mL of chlorine gas at a pressure of 754 Torr and a temperature of 298 K. What is the percent chlorine (by mass) in the unknown chlorofluorocarbon?