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Chemistry

2 answers:

tino4ka555 [31]2 years ago

8 0

Answer:

What is your question?

Explanation:

???

Ede4ka [16]2 years ago

5 0

Answer:

Stan TXT

Explanation:

because they are amazing

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fish give off the compound ammonia which has a pH above 7 to which class of compounds does ammonia belong

jasenka [17]

Answer:
The compound ammonia given by fish is alkaline

Explanation:
We can classify elements/compounds based on their pH values into three types:
acids: these are compounds having pH value lower than 7
neutral: these are compounds having pH value equal to 7
alkalies: these are compounds having pH values higher than 7

This is shown in the attached image

We are given that the pH of the compound ammonia generated by the fish is above 7.
According to the above explanation, compound ammonia would be an alkaline compound.

Hope this helps :)

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3 years ago

Which of the following is the best evidence for a chemical reaction?

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C. Formation of a new substance

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Imagine that you're doing an experiment that requires you to smell the odor of a chemical solution in a beaker. Which procedure

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The correct answer really is B.

If you are directed to break that rule then you better be in a high level chemistry class. When I taught things like that I insisted that students just wait until the chemical permeated the fume cabinet and even then I was always very nervous.

Sometimes you have to know when to ignore a bad direction. If you are working with chlorine, for example, you should be especially careful. That stuff was used in WWI as part of a chemical warfare technique. Many men suffered grotesque deaths by breathing it in, particularly if they were in trenches. Chlorine is heavier than air. It sinks to the lowest level.

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3 years ago

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How do i describe endothermic and exothermic changes in matter?

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I hope this helps you with your problem !!!!!