2 years ago

What makes a molecule a carbohydrate?

Biology

2 answers:

hichkok12 [17]2 years ago

7 0

I got the same correct answer as the person who answered it first I’m

Lynna [10]2 years ago

3 0

A molecule is a carbohydrate if it contains carbon and water

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What rare disease suddenly became much more common in the 1950s? according to the video, what rare disease suddenly became much

Sergeu [11.5K]

The answer to this question would be: lung cancer

In 1950, the medical practitioner doesn't know the relation of cigarette smoking with lung cancer. In that era smoking advertising is very massive and some physician even helps it. This cause increased amount of lung cancer incidence. The amount of lung cancer continues to increase till 1980-1990

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2 years ago

Explain how a crime lab could use paper chromatography to determine if lipstick found at a crime scene matched the lipstick of a

FromTheMoon [43]

Explanation:

The lipstick from the crime would be crushed and dissolved in an appropriate liquid solvent. The lipstick would then be placed in one of the ink spots on the starting / base line of the paper. Another spot would be created for the lipstick with which it is being compared with.

The paper chromatogram would then be placed vertically on a solvent that acts as the mobile phase. After some time, when the solvent reaches the solvent front of the paper chromatography, by capillary action, the chromatogram can be removed and left to dry.

Bands will have appeared on the chromatography paper formed from the different components of the lipstick. The bands of the lipstick from the crime scene and that with which it is being compared to are observed. If the bands are all aligned, horizontally, then this means it is a complete match. The lipstick must have been the same used at the crime scene.

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For more on paper chromatography check out;

brainly.com/question/13232854

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