3 years ago

Round off 4.5778 x 10mg to three significant figures.

Chemistry

1 answer:

lakkis [162]3 years ago

4 0

Answer:

Explanation:

= 45.8

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option B is correct

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Silver tarnish consists of silver sulfide. what is its chemical formula?

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4 years ago

Calculate the energy of an electron in the n = 2 level of a hydrogen atom.

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Explanation:

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$E = - \frac{13.6}{n^{2}} eV$

Substitute the values into above formula as follows.

$E = - \frac{13.6}{n^{2}} eV\\= - \frac{13.6}{(2)^{2}}\\= - 3.40 eV$

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When sodium bonds with chlorine, what is the chlorine electron configuration like?A. any other halogenB. neonC. argonD. radon

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Answer:

Explanation:

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It means , one electron is transferred from the sodium to the chlorine.

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