Respuesta :
The mass percentage of each element in baking soda is:
- For sodium, it is 27.36%.
- For hydrogen, it is 1.2%.
- For carbon, it is 14.3%.
- For oxygen, it is 57.14%
The calculation of mass percentage for each element is as follows:
- For sodium [tex]= \frac{45.98}{168.02} \times 100\%[/tex] = 27.36%
- For hydrogen [tex]= \frac{2.02}{168.02} \times 100\%[/tex] = 1.2%.
- For carbon [tex]= \frac{24.02}{168.02} \times 100\%[/tex] = 14.3%
- For oxygen [tex]= \frac{96}{168.02} \times 100\%[/tex] = 57.14%
In this way, the mass percentage should be calculated by dividing each one from the baking soda sample.
Learn more: brainly.com/question/13145357
Answer:
The mass percentages of sodium, hydrogen, carbon, and oxygen are 27.37%, 1.20%, 14.30%, and 57%, respectively.
Explanation:
The mass percentage (%mass) of an element present in a compound is calculated using the following expression:
[tex]\rm \%mass=\dfrac{mass\;of\;the\;element}{mass\;of\;the\;compound}\times 100\%[/tex]
According to the given problem, the mass of [tex]\rm NaHCO_3[/tex] is 168.02 g.
The mass of sodium in the given sample is 45.98 g.
So, the %mass of sodium in the given sample is calculated as shown below:
[tex]\rm \%mass\;of\;sodium=\dfrac{45.98\;g}{168.02\;g}\times 100\%=27.37\%[/tex]
Similarly, the mass percentages of hydrogen, carbon, and oxygen are calculated as shown below:
[tex]\rm \%mass\;of\;hydrogen=\dfrac{2.02\;g}{168.02\;g}\times 100\%=1.20\%[/tex]
[tex]\rm \%mass\;of\;carbon=\dfrac{24.02\;g}{168.02\;g}\times 100\%=14.30\%[/tex]
[tex]\rm \%mass\;of\;oxygen=\dfrac{96\;g}{168.02\;g}\times 100\%=57\%[/tex]
Hence, the mass percentages of sodium, hydrogen, carbon, and oxygen are 27.37%, 1.20%, 14.30%, and 57%, respectively.
Learn more about mass percentage here:
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