Question

4. Suppose that a student performed the experiment and calculations perfectly as directed except that, unknown to the student, the balance was not zeroed but weighed 0.100 g too high throughout the experiment. Would the calculated val ue for the density of the unknown liquid be correct? That is, would it be equal to, higher than, or lower than the true value. Explain your answer in clear and correct English. The un nown liquid would be equal to tYue value

Answer 1

Q4.

This is most likely not going to affect

If the balance was used ALWAYS with the 0.1 g shift, then the same shift will be cancelled

for instance:

Mass of beaker = 100.05 g

Mass of beaker + sample = 100.55 g

then

when using the balance you will read:

Mass of beaker = 100.15 g

Mass of beaker + sample = 100.65 g

Then

mass of sample = ( 100.65 ) - (100.15 ) = 0.5 g

Which is true only if we use the same analytical balance without taring further

mass of sample = (Mass of beaker + sample) - (Mass of beaker )