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An astronaut who specializes in chemistry
discovers a strange chemical compound Onur
and she is unsure of what it is! She does a few
experiments and finds that the chemical compound
has the following percent composition:
Mg: 10.89%
Cl: 31.77%
0 57.34%
Follow the steps below to figure out the empirical
formula
a. Using a hypothetical sample of 100 grams, write
the mass of each element in a sample of 100
grams.
11
0/1
Write the empirical formula.
Do not worry about adding
subscripts.
For example, H, O will be H2O.
7:07 PM

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.