Sig Figs on Midterm Q4 Part 2

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Amy Xiao 1I
Posts: 101
Joined: Sat Jul 20, 2019 12:15 am

Sig Figs on Midterm Q4 Part 2

Postby Amy Xiao 1I » Sat Dec 07, 2019 12:29 pm

Why does the answer (0.08567) have only 4 sig figs when the information given to you is 102.557 (nm) and 100 kJ? Does the use of Avogadro's number (6.022 x 1023) affect this?

Midori Hupfeld 3D
Posts: 55
Joined: Fri Aug 30, 2019 12:17 am

Re: Sig Figs on Midterm Q4 Part 2

Postby Midori Hupfeld 3D » Sat Dec 07, 2019 12:38 pm

I rounded to 0.09 moles because of the 100 kJ and got the question correct, so I think for future reference, just keep rounding to the lowest amount of sig figs given in the problem.

Jade Hinds 2B
Posts: 75
Joined: Tue Sep 10, 2019 12:16 am

Re: Sig Figs on Midterm Q4 Part 2

Postby Jade Hinds 2B » Sat Dec 07, 2019 12:41 pm

Can someone please explain how they solved this question? because i got it wrong on the midterm :/

Jesse Anderson-Ramirez 3I
Posts: 54
Joined: Thu Sep 26, 2019 12:18 am

Re: Sig Figs on Midterm Q4 Part 2

Postby Jesse Anderson-Ramirez 3I » Sat Dec 07, 2019 12:45 pm

You would use the lowest amount of sig figs present in the problem which is 3 because of the 100 kJ


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