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None. A water molecules contains one oxygen atom and two hydrogen atoms. Oxygen only contains oxygen.

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8y ago
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14y ago

A water molecule is made up of one oxygen atom. It is a negative charge. The other two are two hydrogen atoms, they are positive.

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14y ago

one molecule of oxygen and two molecules of hydrogen.

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12y ago

The oxygen molecule, O2, contains two oxygen atoms, and a water molecule has only one oxygen atom, therefore it has half of an oxygen molecule.

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11y ago

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Q: How many molecules of oxygen is need to make water?
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Related questions

How many hydrogen molecules and oxygen molecules would you need to start with to make 10 water molecules?

20 hydrogen 10 oxygen


How many oxygen molecules are produced for the splitting of two molecules when electricity flows through water?

2 water molecules form one molecule of oxygen.


When electricity flows through water the water molecules split into molecules of hydrogen and oxygen gas How many oxygen O2 molecules are produced from the splitting of two molecules of water H2O?

One is produced


When electricity flows through water the water molecules split into molecules of hydrogen and oxygen gas. How many oxygen (O2) molecules are produced from the splitting of two molecules of water (H2O)?

One is produced


How many oxygen atoms are in water molecules?

3 oxygen atoms in three molecules of water.- There are 3 total atoms in water, which is H2O. There are 2 hydrogen atoms (H), and 1 oxygen atom (O).


How many oxygen atoms are in molecules of water?

3 oxygen atoms in three molecules of water.- There are 3 total atoms in water, which is H2O. There are 2 hydrogen atoms (H), and 1 oxygen atom (O).


How many atoms of oxygen are there in all 4 moelcules of water?

There are 8 oxygen atoms in 4 water molecules.


How many moles of oxygen gas are needed to make 4 moles of water?

4 moles of oxygen atoms are present in 4 moles of H2O


How many atoms are needed to make 30000000000000000000 molecules of water?

There are 3 atoms in one molecule of water (H2O is two hydrogen atoms and one oxygen atom)... so just multiply the number of molecules by 3.


How many oxygen atoms are in 6 molecules of water?

6 atoms of oxygen are present. Three O2 contains 6 O atoms.


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 does the temperature of the ocean water affect oxygen levels in water?

Cold water is denser than warm water. Cold water sinks the bottom of the ocean taking many of the oxygen molecules with it. In the same sense warm water keeps water molecules spread throughout it self.