
Concept explainers
Interpretation:
Among the given molecules, the molecule having greater number of chromium should be determined.
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

Answer to Problem 8E
More number of moles of chromium is present in1.0 g chromium (IV) oxide (
Explanation of Solution
Given information:
1.0 g chromium (II) chloride,
1.0 g chromium (III) chloride,
1.0 g chromium (IV) oxide,
Molar mass of
=
Molar mass of
=
Molar mass of
=
Number of moles of
Put the values,
Number of moles of
Number of moles of
In one mole of chromium(II) chloride,
So, the number of moles of chromium ion in
Number of moles of
Put the values,
Number of moles of
Number of moles of
In one mole of chromium(III) chloride,
So, the number of moles of chromium ion in
Number of moles of
Put the values,
Number of moles of
Number of moles of
In one mole of chromium(IV)oxide,
So, the number of moles of chromium ion in
Hence, on the basis of above calculations, greater number of moles of chromium is present in
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