May u please tell me why I have it wrong and what is the right answer! Thanks Select the correct option for the answer (with the correct number of significant figures) to the mathematical expression3.315-0.143.8510.824O 0.820.8245None of the choices are correct.

The number of significant figures in the product of the calculation is the minimum number of…

Answered: Select the correct option for the…

Pushing Electrons

4th Edition

ISBN:9781133951889

Author:Weeks, Daniel P.

Publisher:Weeks, Daniel P.

Chapter3: Mechanisms

Section: Chapter Questions

Problem 111EQ

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Suppose a student measured the mass of a sample that has a known mass of 40.5809 g using an analytical balance. The mass they observed was unstable, constantly jumping between 39.5 and 41.5. Choose all of the following reasons that could cause this error. O The doors to the analytical balance were not closed completely, allowing an air current to circulate inside the balance. One weigh boat was used to tare the balance while a different one was used when the sample was massed. Twice the amount of sample was placed on the analytical balance. O The sample was heated, causing a convective flow.
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Select the correct option for the answer (with the correct number of significant figures) to the mathematical expression 3.315-0.14 3.851 0.824 O 0.82 0.8245 O None of the choices are correct.