Answer:The top of the fractional distillation column will have a more volatile liquid as compared to the liquid at the bottom.
Explanation:
Fractional distillation is the method of separating liquids with different boiling points.For example,ethanol can be separated from water from a ethanol-water mixture.The component with a lower boiling point will pass in the column and collected first followed by higher boiling point component.Repeated vaporization and condensation results in the separation of the components in the mixture.
Answer:
(7x² - 7x + 12)/2x(x - 4).
Explanation:
- To do this calculation process:
We should common the denominator by multiplying the denominators of the two terms (2x)(x - 4) and dividing each denominator by the common denominator.
So, it will be equal:
[2x(3x) + (x -4)(x - 2)]/2x(x - 4)
= [6x² + x² - 7x + 12]/2x(x - 4)
= [7x² - 7x + 12]/2x(x - 4).
Answer:
15000 g
Explanation:
We simply multiply 100 grams with 150 grams to get 1.5(10⁴) grams.
Answer:
A velocity-time graph shows how velocity changes over time. The sprinter's velocity increases for the first 4 seconds of the race, it remains constant for the next 3 seconds, and it decreases during the last 3 seconds after she crosses the finish line.
The Percent error in the calculation of densities of the metal during experiment is 0.03 %
<h3>What is Percentage error?</h3>
Percent error is the difference between estimated value and the actual value in comparison to the actual value and is expressed as a percentage.
Percent error = [Experimental value - Theoretical value] / Theoretical value x 100%
Percent error = 7.83 -7.86 / 7.86 x 100
= 0.03 %
Learn more about percentage error here ;
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