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Citrus2011 [14]
3 years ago
9

Which of the following substances would you expect to have a low melting point?

Chemistry
1 answer:
Lorico [155]3 years ago
5 0
The substance you would expect to have a low melting point would be carbon dioxide, so the correct answer would be A
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3 years ago
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When H2(g) reacts with Cl2(g) to form HCl(g) , 185 kJ of energy are evolved for each mole of H2(g) that reacts. Write a balanced
Katyanochek1 [597]

Answer:

H₂(g) + Cl₂(g) → 2HCl(g) + 185kJ

Explanation:

In a chemical reaction, enthalpy of reaction ΔH is a thermodynamic constant that gives information if the reaction is exothermic (Produce heat if reacts) or endothermic (Consume heat if reacts).

In the reaction:

H₂(g) + Cl₂(g) → 2HCl(g) ΔH = -185kJ

As ΔH <0, the reaction is exothermic, that means, <em>produce heat</em>, writing a balanced thermochemical equation:

<em>H₂(g) + Cl₂(g) → 2HCl(g) + 185kJ</em>

<em></em>

The enthalpy is as a product beacause an exothermic reaction produces heat.

I hope it helps!

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4 years ago
How many chlorine atoms in 3ZnCl2
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Answer:

6 Cl atoms

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In one molecule of ZnCl2, we have 2 atoms of Cl

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How was island hopping a change in strategy for the us military?
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Less energy was entering Earth's
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The temperatures on Earth increase

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