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Yuki888 [10]
3 years ago
11

An unknown element sample has 2 isotopes present. The first isotope has a mass of 6.017 amu and is

Chemistry
1 answer:
oksano4ka [1.4K]3 years ago
8 0

Answer:

Calculating Atomic Mass

Change each percent abundance into decimal form by dividing by 100. Multiply this value by the atomic mass of that isotope. Add together for each isotope to get the average atomic mass.

Explanation:

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Identify the oxidation number of the highlighted carbon atoms in each of the molecules.
Kryger [21]

Answer:

A) Oxidation state of carbon is +2

B) Oxidation state of carbon is 0

Explanation:

In the first question  , the compound is propanone.

While assigning oxidation states ,

  • <em>We must see to that , </em><em>the electrons in the bond moves towards the most electronegative atom.</em>
  • <em>If they are equally electronegative , </em><em>each of them gets 0 oxidation state respectively.</em>
  • <em>And if there is one bond , </em><em>the oxidation state obtained by the electronegative atom is -1 and the other is +1.</em>
  • The order of electronegativity is as follows :

O>C>H

  • <em>Thus O always gets -1 and H always gets +1 in these two compounds.</em>
  • <em>The carbon - carbon bond will give 0 oxidation state.</em>

<em>A) According to these rules the Oxidation state of carbon is +2</em>

<em>B) According to these rules the Oxidation state of carbon is 0</em>

  • <u>Diagram attached below </u>
  • The direction of the arrows in the diagram represents the movement of electron

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