You can identify the aldehyde from acidic potassium permanganate. Purple colour of acidic potassium permanganate is changed to colourless because aldehyde is oxidized by acidic potassium permanganate.
Which statement best describes how energy and matter move in a wave?
1 answer:
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<u>Answer:</u>
<em>The percentage error in the measurement is 2.4% </em>
<u>Explanation:</u>
The measurement made by the student is .
But the actual value of density is
The formula to calculate percentage error is
percentage error =
Hence percentage error in this case is given by
<em>Percentage error =
</em>
<em>=
</em>
A physical quantities value will be determines by various quantities. If errors are made in measuring any of these quantities there will be error in the measurement of the final physical quantity as well.
Here density of a substance is a derived quantity determined by measuring mass and volume of that substance.<em> If errors are made in mass and volume measurements the density value will also be erroneous. </em>