A properly prepared Dewar flask can contain liquid air, or any other liquid that needs shielding from ambient heat at standard temperature and pressure to avoid being evaporated.
The atmosphere contains over half of all the air due to the distribution of gases and particles in Earth's layers. The majority of the atmosphere is found in the troposphere, the lowest layer where weather occurs, which contains about 75% of the total air volume. The higher layers contain less air as the density decreases with altitude.
The process by which water vapor changes into liquid water is called condensation. This occurs when warm air cools down and is no longer able to hold all the water vapor it contains, causing the vapor to turn into liquid droplets.
when the temperature reaches the dew point.
Condensation of water vapor occurs when warm air cools. As air cools, it reaches its dew point where it can no longer hold all the moisture it contains, leading to condensation of water vapor into liquid water droplets.
Yes, there is air in ice, only small traces of it, as well as the fact that it contains water, which has two molecules of Hydrogen and one molecule of Oxygen, therefore being air whilst in a liquid form. And as you know, ice is just a frozen version of water, therefore ice contains water.
In cryogenic laboratories in presence of liquid nitrogen as a coolant. ---------------------------------------- Or perhaps in a vacuum-insulated container caled a "Dewar".
During an experiment, James Dewar formed a brass chamber that he enclosed in another chamber to keep the palladium at its desired temperature. He evacuated the air between the two chambers, and through the need for this insulated container, he created the vacuum flask.
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.
When an egg is heated, the protein present within it(the egg white), called albumin gets denatured. This is because protein structures break at high temperatures. As a result, the liquid albumin forms a thick white mass.
The gas trapped in the flask when it is upside-down in the sink of cold water is likely water vapor that has condensed from the surrounding air. As the air inside the flask cools, the water vapor condenses into liquid water, creating a partial vacuum that prevents water from entering the container.
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.
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.
The student is unable to blow up a balloon in the flask because there is already air present in the flask, creating a high pressure environment. When the student tries to blow air into the flask, the pressure inside the flask increases, making it difficult for air to enter and inflate the balloon.
The total volume in the flask is 500ml of water + 100ml of air from the syringe, which equals 600ml. Since the 200ml of water takes up space in the conical flask, the remaining volume for air is 400ml.
Determining the mass of the air in the flask allows for the calculation of the density of air, which is important in various scientific and engineering applications. It also provides insight into the composition and properties of the gas inside the flask.
No.
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.