2 years ago

Which statement best describes plastics

1 answer:

6 0

<span>plastics are poor insulators because the electrons in the atom are tightly bound and unable to move between other atoms. </span>

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jolli1 [7]

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I think it will option D hope it helps

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3 years ago

andre [41]

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Can you tell me the question in the comments on this answer or like how you do it then ill answer you in the comments under this answer

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2 years ago

LenaWriter [7]

Thank you for the free 15 points .

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2 years ago

podryga [215]

The average atomic mass of Boron: 10.431 amu

<h3>Further explanation </h3>

Isotopes are atoms whose no-atom has the same number of protons while still having a different number of neutrons.

So Isotopes are elements that have the same Atomic Number (Proton)

Atomic mass is the average atomic mass of all its isotopes

In determining the mass of an atom, as a standard is the mass of 1 carbon-12 atom whose mass is 12 amu

Mass atom X = mass isotope 1 . % + mass isotope 2.% + ...

The average atomic mass of boron :

$\tt avg~mass=0.8474\times 10.0129+0.1526\times 11.0093\\\\avg~mass=10.431~amu$

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3 years ago

Sedbober [7]

Molecules move more slowly in solids because there they are all very compact

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3 years ago