All gases have different types of properties. Some gases are heaver and lighter than the air around us. Heavier gases fall down and do not rise. Lighter gases rise up because they have a lower density than the air around us. For ex. Hot air balloons rise up because of the hot air made from the fire below the balloon makes a gas which is light which cause the balloon to rise.
If it is a light gas then we will use upward delivery because light gas rises up. If it is a heavy gas like carbon dioxide the it will fall down so we will use downward delivery.
- Ammonia gas - It is colorless , it is light(compared to air),extremely soluble(In Water)
- Carbon dioxide gas - It is colorless , it is heavier(compared to air),slightly soluble(In Water)
- chlorine gas - It is green/yellow , it is much heavier(compared to air),extremely soluble(In Water)
- Hydrogen chloride gas - It is colorless , it is slightly heavier(compared to air),very soluble(In Water)
- Hydrogen gas - It is colorless , it is much lighter(compared to air),extremely soluble(In Water)
- Oxygen gas - It is colorless , it is the same(compared to air),slightly soluble(In Water)
If it is a light gas then we will use upward delivery because light gas rises up. If it is a heavy gas like carbon dioxide the it will fall down so we will use downward delivery.
Measurements:
| kilogram - | base unit for mass |
| volume of a cube- | determined by its length cubed |
| m cubed - | si unit for volume |
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