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OXYGEN

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14y ago

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How is the air you inhale or breathe in different then when you exhale or breathe out?

When you inhale, you take in oxygen-rich air and exhale carbon dioxide-rich air. Inhaling brings fresh oxygen into your lungs, which is then absorbed into your bloodstream. Exhaling removes carbon dioxide, a waste product, from your body.


What influence does closing and opening the air holes have on the amount of air mixing with the gas?

Closing the air holes reduces the amount of air mixing with the gas, resulting in a more fuel-rich mixture. Opening the air holes allows more air to mix with the gas, creating a leaner mixture. This adjustment impacts the combustion process and can affect the efficiency and performance of the system.


How does one obtain a cool flame with the laboratory burner?

To obtain a cool flame with a laboratory burner, you need to adjust the air flow to create a fuel-rich mixture. This can be done by partially closing the air vents on the burner to limit oxygen supply. By having a fuel-rich mixture, the flame will burn at a lower temperature, producing a cool flame.


How does adjusting the needle valve on the Bunsen burner affect the flame?

Adjusting the needle valve on the Bunsen burner controls the amount of air mixed with the gas. Opening the valve increases air, resulting in a blue, hotter, more oxygen-rich flame. Closing the valve reduces air, creating a yellow, cooler, more fuel-rich flame.


What is oxygen rich?

"Oxygen rich" means lots of oxygen. If the air in a room is "oxygen rich" things will burn better. "Oxygen poor" means there isn't much and "oxygen starved" means there is none or almost none.