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If the pressure of gaseous chloroform in a flask is 195 mm Hg at 25C and its density is 1.25 gL what is the molar mass of chloroform?
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∙ 10y ago
119g
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∙ 10y ago
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How would I calculate the mass of air in an empty flask?
From the volume of the flask, and the density of air under the conditions in the room, you can calculate the mass of air. The density of air varies with pressure, temperature, humidity, etc. At sea level and at 15 °C air has a density of approximately 0.001225 g/ml, so under these conditions, a liter flask would contain (1000 ml)(0.001225 g/ml) = 1.225 g of air.
Why did the water rush into the erlenmeyer flask when it was submerged in the cold water?
1. When the flask was placed into the cold water, the colder air molecules in the flask move slower, putting out less pressure. With the decrease in air pressure inside the flask, the now greater pressure outside pushes water into the flask until the pressure inside equals the pressure outside.
A sample of nitrogen gas is stored in a 500.0ml flask at 108kpa and 10.0c the gas is transferred to a 750.0ml flask at 21.0c what is the pressure of nitrogen in the second flask?
74.8 kPa.
A flask that weighs 345.8 g is filled with 225 ml of carbon tetrachloride The weight of the flask and carbon tetrachloride is found to be 703.55 g Calculate the density in gml and gL?
If the weight of the flask and compound are 703.55 and the flask weighs 345.8, then the compound weighs 357.75 grams. Then the density in grams per milliliter is 1.59 g/mL (357.75 g / 225 mL). There are 1000 milliliters in one liter, so the density is also .00159 g/L.
A flask with a capacity of 1.00dm contains 5.00g of ethane The flask will burst if the pressure exceeds 1.00x10 Pa at what temperature will the pressure of the gas exceed the bursting temperature?
See the Related Question to the left for how to solve Ideal Gas Law Problems so as to determine at what temperature to keep the flask so that the pressure is below the specified value.
How would I calculate the mass of air in an empty flask?
From the volume of the flask, and the density of air under the conditions in the room, you can calculate the mass of air. The density of air varies with pressure, temperature, humidity, etc. At sea level and at 15 °C air has a density of approximately 0.001225 g/ml, so under these conditions, a liter flask would contain (1000 ml)(0.001225 g/ml) = 1.225 g of air.
What affect will water on the outside of the flask have in determining the density?
The density is lower.
Why did the water rush into the erlenmeyer flask when it was submerged in the cold water?
1. When the flask was placed into the cold water, the colder air molecules in the flask move slower, putting out less pressure. With the decrease in air pressure inside the flask, the now greater pressure outside pushes water into the flask until the pressure inside equals the pressure outside.
When the water level is higher inside than outside the flask is the gas pressure in the flask higher or lower or the same as the atmospheric pressure?
The gas pressure in the flask is lower than the atmospheric pressure when the water level is higher inside than outside the flask.
When the water level is higher inside than outside the flask is the gas pressure in the flask higher than lower than or the same as the atmospheric pressure?
Yes
If you cool a flask to -200degrise what would happen to the air?
I the flask was sealed, the air inside of the flask would take up less space and as a result, cause a drop in pressure inside the flask.
A sample of nitrogen gas is stored in a 500.0ml flask at 108kpa and 10.0c the gas is transferred to a 750.0ml flask at 21.0c what is the pressure of nitrogen in the second flask?
74.8 kPa.
When all the liquid has evaporated the vapor totally fills the florence flask and exerts a pressure equal to the atmospheric pressure why?
I'm guessing you are analyzing an experiment where you are determining the molecular mass of an organic liquid. You heated the flask and the liquid evaporated filling the flask, but escaping through a small hole in the covering. 1. Gases always fill the container. So, if the liquid evaporated and formed a gas (vapor), it filled the flask, 2. The pressure on the outside the flask is air pressure. since the vapor isn't pushing off the cover, the pressure is not higher than the air pressure. But since the extra escaped, it cannot be less than the air pressure. Therefore, it is the same.
A flask that weighs 345.8 g is filled with 225 ml of carbon tetrachloride The weight of the flask and carbon tetrachloride is found to be 703.55 g Calculate the density in gml and gL?
If the weight of the flask and compound are 703.55 and the flask weighs 345.8, then the compound weighs 357.75 grams. Then the density in grams per milliliter is 1.59 g/mL (357.75 g / 225 mL). There are 1000 milliliters in one liter, so the density is also .00159 g/L.
What equipment except Archumedes principle that can measure density of material?
An old instrument that works very well for solids and liquids is a pichnometer. It is a glass flask with a defined, exact volume and you determine the density by weighing the pichnometer full of water (known density at a specified temperature), the empty flask and the flask with a small amount of the solid or full of a liquid. Note: The liquid or solid should not dissolve in water. If the do, use a standard liquid of known density that will not dissolve the sample
A flask with a capacity of 1.00dm contains 5.00g of ethane The flask will burst if the pressure exceeds 1.00x10 Pa at what temperature will the pressure of the gas exceed the bursting temperature?
See the Related Question to the left for how to solve Ideal Gas Law Problems so as to determine at what temperature to keep the flask so that the pressure is below the specified value.
Can you use a erlenmeyer flask to calculate the density of a liquid?
You can, but the volume will not be as accurate as using a graduated cylinder, and will probably give you an inaccurate density.
