Elements are different from each other because the number of which sub-atomic particle varies?
1 answer:
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Answer : The number of moles of oxygen gas required are, 4.49 moles.
Explanation :
The balanced chemical reaction is:
First we have to calculate the moles of butane gas.
As we know that, 1 mole of substance occupies 22.4 L volume of gas.
As, 22.4 L volume of butane gas present in 1 mole of butane gas
So, 15.5 L volume of butane gas present in mole of butane gas
Now we have to calculate the moles of oxygen gas.
From the balanced chemical reaction we conclude that,
As, 2 moles of butane gas react with 13 moles of oxygen gas
So, 0.692 moles of butane gas react with moles of oxygen gas
Therefore, the number of moles of oxygen gas required are, 4.49 moles.
Answer : The incorrect statements are:
(A) When two nonmetals react, the compound formed is ionic.
(B) Two nonmetals can undergo an oxidation-reduction reaction.
Explanation :
Covalent compound : It is defined as the compound which is formed by the sharing of electrons between the atoms forming a compound.
The covalent compound are usually formed when two non-metals react.
The two nonmetals can not undergo an oxidation-reduction reaction.
Ionic compound : It is defined as the compound which is formed when electron gets transferred from one atom to another atom.
Ionic compound are usually formed when a metal reacts with a non-metal.
The metal-nonmetal reaction can always be assumed to be an oxidation-reduction reaction.
For example :
In this reaction, sodium shows oxidation because the oxidation state changes from (0) to (+1) and and chlorine shows reduction because the oxidation state changes from (0) to (-1).
Hence, the incorrect statements are, (A) and (B)