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morpeh [17]
3 years ago
8

Karen is working with an unknown organic substance. She mixes a sample of the substance with Benedict's solution and heats it. T

he mixture changes from blue to a orange/red color. Based on the test results, Karen can conclude that the unknown substance is a
Biology
2 answers:
cupoosta [38]3 years ago
8 0

Answer: Carbohydrates (sugars)

Benedict’s Test used to test for carbohydrates (sugars). The Benedict’s test determines reducing sugars, which exhibit free ketone or aldehyde functional groups.  When the reducing sugars are heated with Benedicts reagent a reduction reaction changes the color of the reagent from green to rusty brown, orange or red depending upon the type of sugar.

3241004551 [841]3 years ago
7 0
The unknown substance is a carbohydrate sugar
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Since the lunar day lasts for 24 h 50 m, we should just divide it in two, thus get 12 h 25 m. Than we should add the 12 h 25 to the time when one of the low tides appeared, which is 5:10 AM, so we will get 5:35 PM.

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