Draw a structural formula for the one aldehyde with molecular

formula $C{H}_{2}O.$

Draw structural formulas for two of the three ketones with

molecular formula $C_5{H}_{10}O.$

Draw one structure per sketcher. Add additional

sketchers using the drop$-$down menu in the bottom right

corner.

Separate structures with $+$ signs from the drop$-$down

menu.

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Draw a structural formula for the one carboxylic acid with

molecular formula $C_2{H}_4{O}_2.$