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Tom [10]
3 years ago
8

Can some one help whith these

Chemistry
2 answers:
Dmitry [639]3 years ago
7 0

Answer:

hlo we can't see ur pdf so sry

plz mark me as a brainliest

MA_775_DIABLO [31]3 years ago
5 0

Answer:

what is this pdf I cannot see your question

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In the graph above for the dissociation of a strong acid, why do the bars for H3O+ and A- have the same height as the bar for HA
dimaraw [331]

Answer:

The concentration of HA is the same as concentration of H3O+ and A- produced.

Explanation:

The dissociation equation is given below:

HA(aq) + H2O (l) —> H3O+(aq) + A-(aq)

From the reaction above, we can see that the acid is monoprotic acid i.e it has only 1 ionisable hydrogen atom.

Now, from the balanced equation, we can see that the acid produced equal concentration of H3O+ and A-.

This account for the reason why the bars for H3O+ and A- have the same height as the bar for HA.

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3 years ago
Which of the following is a chemical property? a
laiz [17]
The answer is A (The ability to react with oxygen)
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What is the basis for the classification of changes in matter into physical and chemical changes quizlet
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Explanation:

The basis for classifying changes in matter into physical and chemical change is to see if a material is altered after going through a process.

In a physical change only the state of matter is usually altered especially its form or shape.

Chemical change alters a substance by producing new kinds that are totally different from it.

  • In  a chemical change, new kinds of matter are usually formed.
  • Such changes are usually irreversible.
  • Change of state is a reversible process.

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Chemical change brainly.com/question/9388643

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Why does secondary succession usually occur more rapidly than primary succession.
trapecia [35]
Secondary succession occurs more rapidly than primary because soil is already available so there is no need for any other species. Also, there might still be surviving species in the soil present like seeds, roots and other plant organs.
5 0
3 years ago
HELP QUICK!
Burka [1]

Answer: 92 kg

Explanation:

because the rest of them are increasing weight or not changing at all and if you were to go to the moon you would weigh less

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