A125-ml sample of liquid has a mass of 0.16kg. what is the density of the liquid with the proper number of significant figures?

The density of the liquid is 1.3 g/mL.

The mass of the liquid is 0.16 kg = 160 g.

The volume of the liquid is 125 mL.

Density = mass/volume = 160 g/125 mL = 1.3 g/mL

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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