2 years ago

Why is the sky blue and not red, even though blue light scatters more easily than red.

1 answer:

6 0

Because molecules in the air scatter blue light from the sun more than they scatter red light.

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3 years ago

Which element has exactly ﬁve electrons in the highest principal energy level (the outer shell)?

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This question is asking for an element with 5 valence electrons. Just go to the row it is in (excluding transition metals) and count over.
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When dissolved in water, koh behaves as an acid that forms k+ and oh- ions. a base that forms ko- and h+ ions. a base that forms

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Answer:

A base that forms K⁺ and OH⁻ ions.

Explanation:

The KOH is an Arrhenius base.

A is wrong. A base does not form H⁺ ions.

B is wrong. A metal hydroxide forms K⁺ ions, not KO⁻ ions.

D is wrong. The metal forms K⁺ ions, KO⁻ ions.

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2 years ago

Which atoms are indicated by the following configuration?

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$\\ \sf\longmapsto [He]2s^1=Lithium$

$\\ \sf\longmapsto [Ne]3s^23p^5=Chlorine$

$\\ \sf\longmapsto [Ar]4s^2=Calcium$

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2 years ago