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Hi, so this video is going over problem 7 in chapter 13 of chemistry and introduction to general organic and biological chemistry 13th edition.
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And this chapter is specifically going over carbohydrates.
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And this is asking us to point out the functional groups within an aldopentos.
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So an aldo pentos is a carbohydrate, and the name pentos means that we have five carbons.
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So we have five carbons in a chain.
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And oase just means it's a sugar.
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And then aldo means we have an aldehyde somewhere in there.
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So an aldehyde is something that looks like this.
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So it's a carbon -double bonded to an oxygen.
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And on one side there's another carbon group.
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And on one side, there's a hydrogen.
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So this is our aldehyde.
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Now the rest, they're filled up with one oh group and one hydrogen group...