How many ethyne molecules are contained in 84.3 grams of ethyne (C2H2)?
2 answers:
Explanation:
According to the mole concept, there are atoms or molecules present in 1 mole.
As, it is given that mass of ethyne is 84.3 g. Hence, calculate its number of moles as follows.
No. of moles =
=
= 3.24 mol
Therefore, calculate number of ethyne molecules as follows.
atoms
= atoms
Thus, we can conclude that there are atoms in 84.3 grams of ethyne.
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Answer : The correct option is,
Explanation :
- Oxidation reaction : It is defined as the reaction in which a substance looses its electrons. That means, the loss of electrons takes place.
Or we can say that, oxidation reaction occurs when a reactant losses electrons in the reaction.
- Reduction reaction : It is defined as the reaction in which a substance gains electrons. That means, the gain of electrons takes place.
Or we can say that, reduction reaction occurs when a reactant gains electrons in the reaction.
According to the electrochemical series, most likely to be reduced because
Hence, the ion most likely to be reduced is .
