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Soloha48 [4]
3 years ago
5

What happens in a double-replacement reaction?

Chemistry
2 answers:
DochEvi [55]3 years ago
7 0

Answer: D

Explanation: trust

vivado [14]3 years ago
6 0

Answer:

Explanation:

D

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When electrons are filling energy levels, the lowest energy sublevels are occupied first. This is ____________.
Nimfa-mama [501]

When electrons are filling energy levels, the lowest energy sublevels are occupied first. This is Hund's rule.

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The question here is solved using basic chemistry. CaCl2(aq) is an ionic compound which will have the releasing of 2 Cl⁻ ions ions in water for every molecule of CaCl2 that dissolves.
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Which gas below has the largest number of moles at STP?
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a.) 22.4 L Ne.

Explanation:

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For the options:

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using cross multiplication:

1.0 mol occupies → 22.4 L.

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1.0 mol occupies → 22.4 L.

??? mol occupies → 2.24 L.

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  • So, the gas that has the largest number of moles at STP is: a.) 22.4 L Ne.

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Write the formula for compound formed between pb^2+O^2
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