(a)
Interpretation:
Between 10.0 g of calcium (
Concept Introduction:
Mole is SI unit which is used to measure the quantity of the substance. It is the quantity of a substance which contains same
Number of moles is defined as the ratio of mass to the molar mass.
The ratio of mass of the given compound to the number of moles of compound is known as molar mass.
The one mole of any substance is equal to the
(a)
Answer to Problem 5E
Number of moles of calcium atom is more in 10 g of calcium in comparison to 10 g of calcium chloride.
Explanation of Solution
The given information is: 10.0 g of calcium (
First step is to calculate the molar mass of each molecule.
Molar mass of calcium =
Molar mass of calcium chloride =
=
Now,
Number of moles of calcium metal is calculated as:
Put the values,
Number of moles of calcium metal =
Number of moles of calcium metal =
Number of moles of calcium chloride is calculated as:
Number of moles of calcium chloride =
Number of moles of calcium chloride =
In one mole of calcium chloride,
So, the number of moles of calcium metal ion in
Hence, number of moles of calcium atom is more in calcium in comparison to calcium chloride.
(b)
Interpretation:
Between 5.0 g of sodium chloride (
Concept Introduction:
Mole is SI unit which is used to measure the quantity of the substance. It is the quantity of a substance which contains same number of atoms as present in accurately 12.00 g of carbon-12 is known as mole
Number of moles is defined as the ratio of mass to the molar mass.
The ratio of mass of the given compound to the number of moles of compound is known as molar mass.
The one mole of any substance is equal to the Avogadro number i.e.
(b)
Answer to Problem 5E
Number of moles of sodium atom is more in 5.0 g of sodium fluoride in comparison to 5.0 g of sodium chloride.
Explanation of Solution
The given information is: 5.0 g of sodium chloride (
First step is to calculate the molar mass of each molecule.
Molar mass of sodium chloride =
=
Molar mass of sodium fluoride =
=
Now,
Number of moles of sodium chloride is calculated as:
Put the values,
Number of moles of sodium chloride =
Number of moles of sodium chloride =
Number of moles of sodium fluoride is calculated as:
Number of moles of sodium fluoride =
Number of moles of sodium fluoride =
The number of metal atoms,
Hence, number of moles of sodium atom is more in sodium fluoride in comparison to sodium chloride.
(c)
Interpretation:
Between 2.0 g of iron oxide (
Concept Introduction:
Mole is SI unit which is used to measure the quantity of the substance. It is the quantity of a substance which contains same number of atoms as present in accurately 12.00 g of carbon-12 is known as mole
Number of moles is defined as the ratio of mass to the molar mass.
The ratio of mass of the given compound to the number of moles of compound is known as molar mass.
The one mole of any substance is equal to the Avogadro number i.e.
(c)
Answer to Problem 5E
Number of moles of iron atom is more in 2.0 g of iron oxide in comparison to 2.0 g of iron sulfide.
Explanation of Solution
The given information is: 2.0 g of iron oxide (
First step is to calculate the molar mass of each molecule.
Molar mass of iron oxide =
=
Molar mass of iron sulfide =
=
Now,
Number of moles of iron oxide is calculated as:
Put the values,
Number of moles of iron oxide =
Number of moles of iron oxide =
Number of moles of iron sulfide is calculated as:
Number of moles of iron sulfide =
Number of moles of iron sulfide =
The number of metal atoms,
Hence, number of moles of iron atom is more in iron oxide in comparison to iron sulfide.
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Living By Chemistry: First Edition Textbook
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