answer accuracy

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leediane0916
Posts: 31
Joined: Fri Sep 28, 2018 12:29 am

answer accuracy

Postby leediane0916 » Fri Oct 05, 2018 12:24 pm

When I solve problems I don’t round until the very end and keep all my sigfigs but sometimes the answer I get is 0.01-0.02 digits different from the one in the solution manual. Will this be a big problem on the homework/test?

catzxwang
Posts: 4
Joined: Fri Sep 28, 2018 12:25 am

Re: answer accuracy

Postby catzxwang » Fri Oct 05, 2018 12:36 pm

leediane0916 wrote:When I solve problems I don’t round until the very end and keep all my sigfigs but sometimes the answer I get is 0.01-0.02 digits different from the one in the solution manual. Will this be a big problem on the homework/test?


I would suggest asking your TA, because it depends on what the person grading your work thinks. Also, I believe the solution manual's answers assume that you round throughout your working rather than rounding at the end - so for each calculation you perform, you round to the correct number of sig figs before moving on to the next calculation.

Casandra
Posts: 65
Joined: Fri Sep 28, 2018 12:17 am

Re: answer accuracy

Postby Casandra » Fri Oct 05, 2018 12:53 pm

leediane0916 wrote:When I solve problems I don’t round until the very end and keep all my sigfigs but sometimes the answer I get is 0.01-0.02 digits different from the one in the solution manual. Will this be a big problem on the homework/test?


I would ask your TA, because they will be grading our homework and test, therefore some of them are more strict on sig figs than others.

sonalivij
Posts: 70
Joined: Fri Sep 28, 2018 12:27 am

Re: answer accuracy

Postby sonalivij » Fri Oct 05, 2018 1:41 pm

This typically is not a problem as most periodic tables have slightly different molar masses so being .01 or .02 of is to be expected.

Daniel Bowen 3I
Posts: 32
Joined: Fri Sep 28, 2018 12:24 am

Re: answer accuracy

Postby Daniel Bowen 3I » Fri Oct 05, 2018 5:37 pm

leediane0916 wrote:When I solve problems I don’t round until the very end and keep all my sigfigs but sometimes the answer I get is 0.01-0.02 digits different from the one in the solution manual. Will this be a big problem on the homework/test?

I don't know about you but my TA said that as long as it is within .1 of the the correct answer you should be fine for the tests.


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