3 years ago

In a double bond, two atoms share a total of _____ electrons. a two b three c four d six

Chemistry

1 answer:

MissTica3 years ago

3 0

Answer:

C: 4

Explanation:

In every single covalent bond, each atom shares one electron. 1 + 1 = 2. A double bond is just two bonds so, 2 x 2 = 4.

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Complete and balance each of the following equations. If no reaction occurs, enter NOREACTION.

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Part A:

Given equation:

$KI_{(aq)}+BaS_{(aq)}\rightarrow$

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K = +1

I = -1

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S = -2

So, the complete chemical equation including phases of the given reaction is:

$2KI_{(aq)}+BaS_{(aq)}\rightarrow BaI_{2(aq)}+K_2S_{(s)}$

Part B:

Given equation:

$KCl_{(aq)}+CaS_{(aq)}\rightarrow$

Also, the equation is an example of a double replacement reaction.

Note: The oxidation number of:

K = +1

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S = -2

The complete chemical equation including phases of the given reaction is:

$2KCl_{(aq)}+CaS_{(aq)}\rightarrow K_2S_{(s)}+CaCl_{2(aq)}$

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