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Arturiano [62]
3 years ago
11

Which of the following statements is true? A) The iron atom is best considered to be a solid. B) The mercury atom is best consid

ered to be a liquid. C) The helium atom is best considered to be a gas. D) At least two of the above statements are correct. E) None of the above statements are correct.
Chemistry
2 answers:
ale4655 [162]3 years ago
8 0
The answer would be D.
shepuryov [24]3 years ago
3 0
I believe the correct response would be D. At least 2 of the above statements are correct.
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Write the balanced NET IONIC equation for the reaction that occurs when perchloric acid and calcium hypochlorite are combined. I
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Answer:

H^+(aq)+(ClO)^-(aq)\rightarrow HClO{(aq)}

Explanation:

Hello there!

In this case, since perchloric acid is HClO4 and is a strong acid and calcium hypochlorite is Ca(ClO)2, the undergoing molecular chemical reaction turns out:

2HClO_4{(aq)}+Ca(ClO)_2{(aq)}\rightarrow 2HClO{(aq)}+Ca(ClO_4)_2{(aq)}

Thus, since the resulting hypochlorous acid is weak, it does not fully ionize, so it remains unionized, however, we can write the ions for the other species:

2H^++2(ClO_4)^-+Ca^{2+}+2(ClO)^-\rightarrow 2HClO{(aq)}+Ca^{2+}+2(ClO_4)^-

Now, we can cancel out the spectator ions, calcium and perchlorate, to obtain:

2H^+(aq)+2(ClO)^-(aq)\rightarrow 2HClO{(aq)}\\\\H^+(aq)+(ClO)^-(aq)\rightarrow HClO{(aq)}

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Snow melting is a physical change. True False
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Answer:

false

Explanation:

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