Solve the Problem $\frac { 2 } { 5 }$ And $\frac { 5 } { 4 }$

question 79

Multiple Choice

Solve the problem.
-Find the average of $\frac { 2 } { 5 }$ and $\frac { 5 } { 4 }$ (Hint: To find the average of two numbers, find their sum and divide by 2 .)

• A) \(\frac { 1 } { 4 }\)
• B) \(\frac { 33 } { 10 }\)
• C) \(\frac { 7 } { 18 }\)
• D) \(\frac { 33 } { 40 }\)

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Definitions:

Predict Outcome

The process of forecasting or determining the probable results or consequences of a chemical reaction or experiment.

Self-condensation

A reaction in which a molecule undergoes condensation with itself to form a larger molecule, often in the presence of a catalyst.

Ester

Organic compounds derived from an acid where at least one –OH (hydroxyl) group is replaced by an –O– (alkoxy) group.

Aldol Reaction

A type of organic reaction where an enol or an enolate ion reacts with a carbonyl compound to form a beta-hydroxyaldehyde or beta-hydroxyketone, followed by dehydration to give a conjugated enone.