The smallest particle of such an element is an atom, which consists of electrons centered around a nucleus of protons and neutrons.
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The reaction accompanying production of water in this case would be -

Thus ,by observing the reaction, we can conclude that 1 mole of Hydrogen (H
)react with 1/2 mole of oxygen(O
)to produce 1 mole of water (H
O)
Therefore, 37.0 moles of hydrogen(H
) will be required to produce 37.0 moles of water.
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<h2>
Answer:</h2>
A chemical bond is a lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds. The bond may result from the electrostatic force of attraction between oppositely charged ions as in ionic bonds or through the sharing of electrons as in covalent bonds.
<h2>
Explanation:</h2>
Chemical bonds are formed by gaining, yielding or sharing electrons to reach stable electronic configurations such as those of noble gases. Electropositive atoms give up electrons to complete the most stable configuration, leaving them with a negative charge defect.
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A carbon atom is capable of bonding with 4 atoms including carbon itself. So, when there is a double bond between two carbon atoms, each carbon atom has an extra 2 unoccupied bonds. <em>Thus, each carbon atom in a C=C bond is capable of bonding with two other hydrogen atoms.</em>