Any 'empty' container is really full of air, so you don't have to do anything. Pick up a test tube. It's full of air.
yes they collect poisonous particles and liquids from the air
Hydrogen is highly soluble in air. You won't be able to collect it it over air. Hence other methods are preferred
Clouds form when warm, moist air rises and cools, causing the water vapor in the air to condense into water droplets or ice crystals around particles like dust or salt. These tiny droplets then collect together to form clouds.
No, R410a is heavier than air. It is a non-flammable, colorless gas commonly used as a refrigerant in air conditioning systems. At room temperature, it will sink and collect in low-lying or enclosed spaces.
In addition to air pressure, meteorologists collect and analyze data such as temperature, humidity, wind speed and direction, cloud cover, and precipitation. This data helps meteorologists create weather maps that depict current and predicted weather conditions.
oxygen
On the outdoor coil
By fractional distillation of liquefied air.
Scientists collect and test air sample because they want to see how clean/polluted it is. Then they can raise awareness to people if needed.
use your brain
No one knows
yes they collect poisonous particles and liquids from the air
At the top section of the condenser.
Develops and conducts occupational surveys.
mage caption The Namib Desert beetle harvests moisture from the air to survive . A US start-up has turned to nature to help bring water to arid areas by drawing moisture from the air
Hydrogen is highly soluble in air. You won't be able to collect it it over air. Hence other methods are preferred
because the water in them makes them cooler than the ambient air around them. therefore, the collect moisture out of the air as condensation.