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From the air. The air consists of 78% nitrogen and 21% oxygen. The other 1% is made of argon, carbon dioxide and other gases. The oxygen is kept replenished when green plants photosynthesise. This involves the plant extracting the carbon dioxide from the air, absorbing water through its roots, and, using the green pigment chlorophyll in its leaves, convrts these two substances into sugars (its own food) and oxygen which is released into the air to replace what we have used.
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How many moles of oxygen are needed to burn 7.0 mols of phosphorus?
8,75 moles of oxygen are needed.
How many moles of O2 are needed to burn 1.35mol of C8H18?
16,875 moles of oxygen are needed.
How many grams of oxygen will be required to produce 25 moles of sulfur dioxide how many grams of oxygen will be required to produce 25 moles of sulfur dioxide?
800 g oxygen are needed.
What gas in the fire triangle is needed for burning?
Oxygen is the gas needed for burning in the fire triangle. Without oxygen, combustion cannot occur.
What are needed for cellular metabolism between oxygen and nitrogen?
oxygen
How many trees are needed to supply enough oxygen -for 30 people for a year?
10
How many moles of oxygen are needed to burn 7.0 mols of phosphorus?
8,75 moles of oxygen are needed.
How many people rely on oxygen machines?
Millions of people worldwide depend on oxygen machines. As an everyday routine, a part of their lives, oxygen machines provides much needed oxygen for many people that can't breathe on their own without assistance.
How many trees can produce oxygen?
One mature tree can produce enough oxygen for two people in a year. So, the number of trees needed to produce oxygen for a certain population would depend on the oxygen needs of that population.
How many oxygen atoms are needed to react with barium?
One
What gas is needed for cellular respiration?
Oxygen is needed for aerobic respiration.
How many moles of O2 are needed to burn 1.35mol of C8H18?
16,875 moles of oxygen are needed.
How many sodium atoms are needed to form a stable compound with oxygen?
1
How many grams of oxygen will be required to produce 25 moles of sulfur dioxide how many grams of oxygen will be required to produce 25 moles of sulfur dioxide?
800 g oxygen are needed.
How many liters of water are needed to react with 2L of oxygen to make water?
Water does not need to react with oxygen to make water!
How many people were needed for volleyball?
it needed at least 2
How many oxygen atoms are needed to start photosynthesis reaction?
In the first step of photosynthesis, which is light-dependent, two water molecules are needed to start the reaction. Each water molecule contains two oxygen atoms, so a total of four oxygen atoms are needed.
