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Umnica [9.8K]
4 years ago
14

Based on your answer in Part B, how many electrons are in this amount of 13C? Express your answer numerically in electrons.

Chemistry
1 answer:
kakasveta [241]4 years ago
6 0
13C is an isotope of carbon having a mass number equal to 13. The mass number is the sum of the protons and neutrons in the nucleus. For a neutral carbon atom, the number of protons and electrons are equal. Thus, you don't need any additional information because you only have to know the number of protons to know the number of electrons. Since the atomic number of C is 6, then it has 6 electrons in its atom.
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We need to first come up with a balanced equation:


4H+O_{2} → 2H_{2}O


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Converting the amount of grams given to moles is as follows:


Hydrogen: \frac{1mole}{1.008g}*50g=49.6mol


Oxygen: \frac{1mole}{15.999g}*50g=3.125mol


We know now that the limiting reactant is oxygen. We can then know that the number of moles of water are produced are double the number of moles of oxygen used due to the ratio that we established at the beginning - 4:1:2.


So we now can use 6.25 moles of water as the amount produced.


Then we convert moles of water to grams:


\frac{18.015g}{1mole} *6.25mol=112.59g


Now we know that there are 112.59g of water produced when we start with 50g of hydrogen and 50g of water.

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