What is oxidized and what is reduced in this reaction?

cu(s) + 2agno3(aq) → cu(no3)2(aq) + 2ag(s)

cu is reduced and ag is oxidized.

ag is reduced and cu is oxidized.

no3 is oxidized and cu is reduced.

ag is oxidized and no3 is reduced.

Cu is oxidised as its O.S. increases from 0 (In Cu) to +2 (Cu(NO3)2). Since NO3 has a charge of -1, (NO3)2 has a charge of -2 and thus, Cu has a charge of +2.

NO3 O.S. remains unchanged at -1. Note that although its Cu(NO3)2, NO3 O.S. is still -1.

Ag is reduced as its O.S. decreases from +1 (In AgNO3) to 0 (In Ag).

In the given reaction, Cu is oxidized, and Ag is reduced.

Oxidation and reduction are part of the redox reaction.

Oxidation can be described as the loss of electrons and the increase in the oxidation state.

The reduction can be described as the gain of electrons, and the reduction in the oxidation state.

In the given reaction, the oxidation state of Cu, , and Ag in the reactants is 0, -1, and +1 respectively.

The oxidation state of Cu, , and Ag in the products are +1, -1, and 0 respectively.

Since the oxidation state of Cu increases, it is oxidized in the reaction. The decrease in the oxidation state of Ag states the reduction of Ag in the reaction.

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He has $12.13 left to spend on each student

Step-by-step explanation:

14 students x $19 each = $266 total

$266 - $96.18 = $169.82

$169.82 ÷ 14 students = $12.13