If aluminum has a density of 2.7 g/cm3, what is the volume, in cubic centimeters, found in 54 grams of aluminum?

20cm3

Explanation:

density = mass/volume, so volume = mass/density

volume = (54g)/(2.7g/cm3)= 20cm3

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explanation:

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

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