
Concept explainers
(a)
Interpretation : The number of copper atoms needs to be calculated.
Concept Introduction : According to
Here, N is number of atoms and n is number of moles.
The mass of an element is related to number of moles as follows:
Here, m is mass and M is molar mass.
(b)
Interpretation : The balanced
Concept Introduction : In a balanced chemical reaction, there are same number of constituent atoms in both sides of the reaction arrow.
(c)
Interpretation : The type of reaction needs to be determined.
Concept Introduction : A reaction in which two or more reactants combined to form a new compound (product) is known as combination reaction.
(d)
Interpretation : The mass of oxygen gas needs to be calculated.
Concept Introduction : The mass of an element is related to number of moles as follows:
Here, m is mass and M is molar mass.
(e)
Interpretation : The mass of copper oxide formed from given mass of Cu and oxygen needs to be determined.
Concept Introduction : The mass of an element is related to number of moles as follows:
Here, m is mass and M is molar mass.
(f)
Interpretation : The mass of CuO formed if the percent yield of the reaction is 85.0% needs to be determined.
Concept Introduction : The mass of an element is related to number of moles as follows:
Here, m is mass and M is molar mass.
The percent yield of the reaction is related to actual yield and theoretical yield as follows:

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Chapter 10 Solutions
Basic Chemistry
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