Unidades con que se miden los átomos o moléculas moles por litro
g/mol
6.022x10²³
peso atómico
otro:​

Explanation:

Por lo general los átomos y las moléculas se miden en uma (unidad de masa atómica).

El átomo esta compuesto por electrones, protones y neutrones, estos dos últimos que se ubican en un núcleo.

El átomo es la materia más elemental y sencilla que puede existir, aunque la mecánica cuántica ha dispuesto de muchas otras, en la actualidad todavía sigue siendo el átomo.

Los electrones son partículas de carga negativa, los protones de carga positiva y los neutrones no poseen carga.

answer: - 3.) the oxidation state of nitrogen in no changes from +2 to 0, and the oxidation state of carbon in co changes from +2 to +4 as the reaction proceeds.

solution: - as per the rules, oxidation number of oxygen in its compounds is -2. the sum of oxidation numbers of all the elements of a molecule or compound is zero.

also, the oxidation number in elemental form is zero.

in no, the oxidation number of o is -2 so the oxidation number of n is +2 so that the sum is zero.

similarly, the oxidation number of c in co is +2 and o is -2.

on product side the oxidation number of n is 0 as it is in the elemental form() .

oxidation number of c in carbon dioxide is +4 as there are two oxygen in it and we know that each oxygen is -2.

so, oxidation number of n is changing from +2 to 0 and the oxidation number of c is changing from +2 to +4.

since nitrogen is reduced and hence no is acting as an oxidizing agent. carbon is oxidized and so co is acting as a reducing agent.

so, the right choice is number 3.)the oxidation state of nitrogen in no changes from +2 to 0, and the oxidation state of carbon in co changes from +2 to +4 as the reaction proceeds.