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Fantom [35]
2 years ago
13

Please help I don’t have a lot of time left

Chemistry
2 answers:
Harrizon [31]2 years ago
5 0

Answer:

So sorry if I was wrong but I think it's B. Because from the source states,

https://socratic.org/questions/which-group-on-the-periodic-table-is-the-least-reactive-why

"The least reactive elements are those who have a full outermost valence shell ie they have 8 electrons in the outer shell so elements such as helium, neon, radon or the transition elements."

Vedmedyk [2.9K]2 years ago
4 0
I think the answer is A. Hope this helps!
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Answer:

The difference between the two is:

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2 years ago
What does the chemical formula C3H2O, tell about a molecule of the compound it represents?​
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inert gas

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The monomer of poly(vinyl chloride) has the formula C2H3Cl. If there are 1,565 repeat units in a single chain of the polymer, wh
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Answer:

\large \boxed{9.780 \times 10^{4}\text{ u}}

Explanation:

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\text{Molecular mass} = \text{1565 units} \times \dfrac{\text{62.494 u}}{\text{1 unit }} = \mathbf{9.780 \times 10^{4}}\textbf{ u}\\\\\text{The molecular mass of the chain is $\large \boxed{\mathbf{9.780 \times 10^{4}}\textbf{ u}}$}

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