Concept explainers
Interpretation:
Whether 10.0 g of C or 10.0 g of
Concept introduction:
The number of moles of a compound is defined as the ratio of the given mass of the compound to the molar or molecular mass of the compound.
The mathematical expression is given by:
Number of moles =
The one mole of any substance is equal to the
Answer to Problem 117A
The number of atoms of 10.0 g of carbon is greater the number of atoms of 10.0 g of calcium.
Number of atoms of
Number of atoms of
Explanation of Solution
Mass of carbon = 10.0 g
Mass of calcium = 10.0 g
Molar mass of carbon = 12.0107 g/mole
Molar mass of calcium = 40.078 g/mole
Number of moles of
Since one mole of any substance is equal to the Avogadro number, i.e.,
Number of moles =
Put the values,
Number of atoms of
Number of moles of
Put the values,
Number of atoms of
The number of atoms of 10.0 g of carbon is greater than the number of atoms of 10.0 g of calcium.
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Chemistry: Matter and Change
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