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liq [111]
3 years ago
12

Why is this reaction considered to be exothermic? a Because energy difference A is greater than energy difference C. b Because e

nergy difference A and energy difference C are about equal. c Because energy difference B is greater than energy difference A. d Because energy difference B is greater than energy difference C. e Because energy difference B is greater than energy difference C plus energy difference A.
Chemistry
1 answer:
Pani-rosa [81]3 years ago
4 0

Answer:

we would need a bit more info for this

Explanation:

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Hello!

When finding the chemical formula of a compound, we will need to find the charges of each element/bond.

Looking at our period table, sodium has a +1 charge, written as Na 1+, and sulfate has a charge of -2, and it is written as SO4 2-.

Now, we need to make the charges equivalent. To do this, we need to "criss-cross" the charges. This means that sodium will need to additional atoms to make the charges equal, and sulfate will need one.

Therefore, the chemical formula for sodium sulfate is: Na2SO4.

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3 years ago
A chemistry instructor provides each student with 8 test tubes at the beginning of the year. If there are 28 students per class,
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7 0
3 years ago
Choose all true statements about the water molecule: Choose all true statements about the water molecule: Bonding between the ox
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Answer: Water is a permanent electric dipole, having permanent charge separation.

Explanation:

Hydrogen bonding is an intermolecular force having partial ionic-covalent character.

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4 0
2 years ago
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Lostsunrise [7]

Answer:

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Explanation:

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Bond [772]

Answer:

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