If silicon has a charge of +4 and oxygen has a charge of -2, what is the total charge on this structure?

Zero with the subscripts, +2 without them.

Explanation:

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In this case, since we consider that two silicon are bonded with four oxygen atoms to form silicon oxide according to the following chemical equation:

It is also possible to realize it can be simplified to obtain:

Which means that the total charge with the subscripts is zero, and without the subscripts +2 (+4-2).

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in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.

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