
Concept explainers
(a)
Interpretation:
The given diagram has to be classified as a mixture, an element or a compound.
The given diagram is,
Figure 1
Concept Introduction:
Matter can be classified into two type’s namely pure substance and mixture.
Pure substance: A single component that has a constant composition, irrespective of the
Example: Water, sugar etc.
A pure substance can be classified into an element and a compound.
Element: A pure substance, which cannot be broken down into smaller substances by a
Example: Hydrogen gas, Magnesium ribbon and copper wire etc.
Compound: A pure substance that is formed by combination of two or more elements by chemical process is called as a compound. Example: Sodium chloride is a compound because it is formed from elements sodium and chlorine.
Mixture: A mixture consists of more than one substance and the composition of a mixture is dependent on the sample. The separation of mixture into its components can be done by physical changes.
(b)
Interpretation:
The given diagram has to be classified as a mixture, an element or a compound.
The given diagram is,
Figure 2
Concept Introduction:
Refer to part (a).
(c)
Interpretation:
The given diagram has to be classified as a mixture, an element or a compound.
The given diagram is,
Figure 3
Concept Introduction:
Refer to part (a).

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Chapter 3 Solutions
Foundations of College Chemistry, Binder Ready Version
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- The Ka for sodium dihydrogen phosphate is 6.32 x 10-8. Find the pH of a buffer made from 0.15 M H2PO4- and 0.25 M HPO42- .arrow_forwardThe Ka for lactic acid is 1.4 x 10-4. Find the pH of a buffer made from 0.066 M lactic acid and 0.088 M sodium lactate.arrow_forwardZaitsev's Rule 3) (a) Rank the following alkenes in order of decreasing stability. most stable A B C D > > > (b) Rank the following carbocations in order of decreasing stability least stable B C Darrow_forward
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