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The answer looks long and confusing but the thing is, it really isn't Here is a simple experiment that shows that the atmosphere today contains around 'one fifth oxygen.'
1) When it's heated, copper reacts with oxygen in the air to make copper oxide - so the reaction uses up oxygen.
2) if you heat an excess of copper in a tube and pass air over it using two syringes, you can use the markers on the syringes to tell how much oxygen has been used up.
3) So, if you start with 100cm of air, you'll end up with around 80cm when the reaction's finished and the air has cooled. If 20cm of air has gone then around 20% of the air must be oxygen.
Get it? Try reading again and you might understand :D
What else can I help you with?
What would have to the oxygen content in the air if photosynthesis were stop?
The oxygen content in air would have decreased. This is because photosynthesis is a process which keeps the balance between oxygen and carbon dioxide by converting carbon dioxide to oxygen.
What proportion of each gas in air?
The percentage of oxygen in air is 21%.
Does ocean water have higher levels of oxygen than air?
No, air contains about 21% oxygen, while ocean water contains only about 5-10 milliliters of dissolved oxygen per liter. The higher concentration of oxygen in the air makes it easier for animals to extract the oxygen they need for respiration.
Where does the oxygen come from that is reacting with a piece of burning iron?
When oxygen is reacting with iron it generally comes from the air, but it can also come from oxygen disolved into water. There are other ways it can occur but I do not know these. But unless it is in a vacuum, the oxygen comes from the surrounding environment like air or water.
Where does oxygen come from when burning wood?
Oxygen in the combustion of wood primarily comes from the surrounding atmosphere. During the burning process, oxygen molecules in the air react with the carbon and hydrogen in the wood to produce heat, carbon dioxide, and water vapor.
Why air dissolved in water contains higher proportion of oxygen?
Air contains about 21% oxygen and 78% nitrogen, while water can only dissolve a limited amount of gas. Therefore, the oxygen in air dissolves in water at a higher proportion than nitrogen. This is due to the partial pressure of oxygen being higher in air compared to nitrogen.
What natural hazard would be more common and more dangerous if the proportion of oxygen in the air was very much greater than it is today?
Fire.
What danger we have to face if the proportion of oxygen and nitrogen in the air undergo a change?
Difficult respiration if the oxygen is under 20 % followed by death.
What is the difference between the air we breathe in and the air we breathe out?
The difference - is in the proportion of the gasses present. The air we breathe in contains about 20% Oxygen. What we breathe out has about 16% oxygen and high levels of carbon dioxide.
Why is it inaccurate to say that you breathe in oxygen and breath out carbon dioxide?
Because what you breath in is air (which is 80% nitrogen) not oxygen and what you breath out is air with a slightly changed proportion of gases as compared that which you breathed in.
What would be the solute 80 percent Nitrogen 20 percent Oxygen?
In this case, the solute would be nitrogen since it is the substance that is present in the larger proportion (80%) compared to oxygen (20%). The solvent would be the medium in which these substances are dissolved, such as air or a gas mixture.
What proportion of the air is made up of carbon dioxide oxygen and nitrogen?
nitrogen is 78% while CO2 is part of a percent
Does gallium react with oxygen?
of course not gallium does not react with oxygen you retards cuz if it did then something would happen if you would it in the air cuz oxygen is in the air
Why is it hard to breathe on the moon?
Breathing on the moon is hard because the moon has no atmosphere to hold and distribute oxygen for breathing. Humans require a blend of gases in a certain proportion to breathe properly, which is not present on the moon. Additionally, the lack of air pressure on the moon would make it difficult for our lungs to take in oxygen.
Should it be possible to Condense oxygen from the air what would have to happen?
To condense oxygen from the air, you would have to cool the air to a temperature below the boiling point of oxygen, which is around -183 degrees Celsius. This process would separate the oxygen gas from the other components of air, allowing it to be collected as a liquid.
What would happen if much carbon dioxide in the air is not used by plants in food making?
When there is too much carbon dioxide collecting in the air and the plants do not use it up, it may grow to toxic proportions. The content of oxygen will reduce in proportion to the amount of carbon dioxide.
Where YOU would find oxygen gas?
in the air
