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wolverine [178]
3 years ago
11

Convert 78.9 kJ into calories Can you also explain how pls? ty

Chemistry
1 answer:
weqwewe [10]3 years ago
8 0

Answer:

18857.553

Explanation:

for an approximate result, multiply the value by 239

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The dissolution of calcium chloride in water is given by the following equation:
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Answer:

The reactants would appear at a higher energy state than the products.

Have a nice day!

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2 years ago
Enter the net ionic equation for this reaction. Express your answer as a net ionic equation. Identify all of the phases in your
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Answer:

2H+(aq) + 2OH-(aq) → 2H2O(l)

Explanation:

Step 1: The balanced equation

2HCl(aq)+Ca(OH)2(aq) → 2H2O(l)+CaCl2(aq)

This equation is balanced, we do not have the change any coefficients.

Step 2: The netionic equation

The net ionic equation, for which spectator ions are omitted - remember that spectator ions are those ions located on both sides of the equation - will.

2H+(aq) + 2Cl-(aq) + Ca^2+(aq) + 2OH-(aq) → 2H2O(l) + Ca^2+(aq) + 2Cl-(aq)

After canceling those spectator ions in both side, look like this:

2H+(aq) + 2OH-(aq) → 2H2O(l)

6 0
3 years ago
Why does every chemical reaction require a certain amount of activation energy?
Savatey [412]

The answer could possibly be D.) The product have more potential than the activated complex OR C.) Forming the activated complex requires energy .

4 0
3 years ago
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State and explain the trend in electron<br> affinity shown by halogens
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<h3>As fluorine sits atop chlorine in the periodic table, most people expect it to have the highest electron affinity, but this is not the case. ... Therefore, chlorine has a higher electron affinity than fluorine, and this orbital structure causes it to have the highest electron affinity of all of the elements.</h3>

6 0
3 years ago
Which part of feature is included in the hydrosphere?
katrin [286]

Answer:

C. glaciers

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Glaciers are a part of the hydrosphere

The hydrosphere is the amount of water on the earth. It includes water in the different states found on the earth surface and within the subsurface. Water does exists as solids, liquids and in vapor form on earth.

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3 years ago
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