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max2010maxim [7]
3 years ago
8

Please help me with this

Chemistry
2 answers:
Zina [86]3 years ago
6 0

Answer:

C

Explanation:

it breaks down a simple sugar into a type of energy their cells can use

kenny6666 [7]3 years ago
3 0

Answer:

a.

Explanation:

not too sure but just a guess.

hope ot helps

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Helga [31]

Answer:

the anwser would be B obtain energy

Explanation:

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Which characteristic is not used to classify stars? size color distance from Earth age
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According to the topic on stars, galaxies and the universe, the characteristics that are used to classify stars are color, temperature, size, elemental or compound composition, and brightness. Among these factors give, the characteristic not used to classify stars is distance from the earth. 
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What are the limitations of litmus paper and Phenolphthalein indicators? Name to other indicators that can be used that do not h
jenyasd209 [6]

Answer:

Here's what I find.

Explanation:

An indicator is usually is a weak acid in which the acid and base forms have different colours. Most indicators change colour over a narrow pH range.

(a) Litmus

Litmus is red in acid (< pH 5) and blue in base (> pH 8).

This is a rather wide pH range, so litmus is not much good in titrations.

However, the range is which it changes colour includes pH 7 (neutral), so it is good for distinguishing between acids and bases.

(b) Phenolphthalein

Phenolphthalein  is colourless in acid (< pH 8.3) and red in base (> pH 10).

This is a narrow pH range, so phenolphthalein is good for titrating acids with strong bases..

However, it can't distinguish between acids and weakly basic solutions.

It would be colourless in a strongly acid solution with pH =1 and in a basic solution with pH = 8.

(c) Other indicators  

Other acid-base indicators have the general limitations as phenolphthalein. Most of them have a small pH range, so they are useful in acid-base titrations.

The only one that could serve as a general acid-base indicator is bromothymol blue, which has a pH range of 6.0 to 7.6.

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3 years ago
Why do we think mercury has so many tremendous cliffs?
wlad13 [49]

Answer:

it is sticky

Explanation:

hope it helps

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2 years ago
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Would you expect two electrons to attract or repel each other?
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Repel because opposites only attract
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