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How many moles of N2 are in a flask with a volume of 250ml at a pressure of 300.0 kPa and a temperature of 300.0 K?
Wiki User
∙ 11y ago
The number of moles is 0,03.
Wiki User
∙ 8y ago
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What is a calibrated mark on a measuring flask?
This mark is the indication of the exact volume of the flask at a given temperature (generally at 20 0C).
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.
Why should you never heat a flask when sealed with a cork?
increased pressure and temperature
Sam filled a 500ml conical flask with 200ml of water Then he attached a 100ml syringe full of air to the conical flask and pushed the plunger inwards What was the volume of air in the flask?
The volume of air would remain the same but the pressure of the air increased.
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.
How many decimal places should be used to record the volume of a 250ml volumetric flask?
The answer depends on the graduation on the flask.
What is the maximum amount of liquid that a conical flask can hold?
that depends on the volume/size of the conical flask, the usual size would hold 250ml. theres some 1L, and even 50ml (possible smaller) conical flask.
A gas originally at 27C and 1.0atm pressure in a 3.9 L flask is cooled at constant pressure until the temperature is 11C What is the new volume of gas?
3.7 L
How do you get an egg out of a flask?
you heat the bottom of the flask. as temperature goes up, the volume will go down and push the egg out.
What is a calibrated mark on a measuring flask?
This mark is the indication of the exact volume of the flask at a given temperature (generally at 20 0C).
Is the volume occupied by the gas in the flask approxmately the same greater or less than before it was heated?
Assuming the flask is sealed - the volume remains the same but the pressure increases
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.
Why should you never heat a flask when sealed with a cork?
increased pressure and temperature
Sam filled a 500ml conical flask with 200ml of water Then he attached a 100ml syringe full of air to the conical flask and pushed the plunger inwards What was the volume of air in the flask?
The volume of air would remain the same but the pressure of the air increased.
Gas is contained in a 125mL flask The actual volume of the flask is 131.5mL What is the volume of the flask in L?
Volume of the flask = 131.5 mL - 125 mL = 6.5 mL = 0.0065 L
What is the manipulated variable in the egg in a bottle experiment?
Egg Sucked into Bottle (Heating Variation)The variable is the temperature of the air inside the bottle, which determines its pressure and volume. When air is heated, it has higher pressure or takes up more volume. When cooled, it becomes more dense and takes up less space. With less volume in the bottle, the only way for the pressure to equalize is by pushing the egg in.Part 1: We were heating an open system "the flask." Temperature and moles were changing. Pressure and volume are being held constant. As the open system is being heated the particles speed up, have limited space to move and moles leave the flask.Part 2: We took the flask off the heater, set it on the counter and put the egg on top. Pressure and temperature are changing. Volume and moles are being held constant. When the egg was put on the flask the temperature decreased causing the molecules to slow down. This decreased the inside pressure of the flask causing the atmospheric pressure to suck the egg into the flask because it was trying to balance with the inside pressure.Egg Sucked into Bottle (Combustion Variation)There is a finite amount of gas in the bottle, nitrogen and oxygen. When combustion occurs (a burning piece of paper), the oxygen in the air combines to form solid oxides and carbon dioxide, both of which occupy less space than the initial free oxygen. Less oxygen in the bottle means lower pressure, and again the outside pressure can force the egg into the bottle.
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.
