Cubes are three-dimensional square shapes that have equal sides. What is the density of a cube that has a mass of 12.6 g and a measured side length of 4.1 cm? (Density: D = )

the density of a cube is 0.1828 m/cm3

Explanation: Edge length of the cube ,a = 4.1 cm

Volume of the cube = a^3

Volume of the cube = 68.921 cm^3

Density=\frac{Mass}{Volume}=\frac{12.6 g}{68.921 cm^3}

Density=0.1828 g/cm^3

The density of the cube is 0.1828 m/cm^3

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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~ trueboss72