2 years ago

Why do we use commas after transition words?

Chemistry

1 answer:

ra1l [238]2 years ago

8 0

Answer:

C - commas indicate a natural pause in the sentence

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A scientist has two substances that she is testing in her lab: a pink

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Answer:

Weaker attraction between its molecules than the green substance. It's molecules now move away from each other.

Explanation:

Liquid to gas.

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3 years ago

Combine each side and then balance the whole equation. Al+HCl=AlCl3+H^+

Aneli [31]

Answer:

$2Al + 6 HCl ---> 2AlCl_3 + 3 H_2$

Explanation:

The valency of aluminium is +3 while the valency of chlorine is -1

we will first write the half reactions

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$Al -----> Al^{3+} + 3^{e-}\\2H^+ 2e^- ----> H_2\\Cl + e^- -----> Cl^-$

Now will write the complete equation-

$Al + HCl -----> AlCl_3 + H_2$

The balanced equation would be

$2Al + 6 HCl ---> 2AlCl_3 + 3 H_2$

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3 years ago

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9.5 x 10^-4 is the answerZ

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3 years ago

Which statement gives a reason why scientist think that the universe began with an explosion

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I believe the answer is

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