#1
I have an equation 4.18 x 1 x 33 =? and i have to put the answer in significant figures, the answer is 137.94 in the equation the lowest number of significant figures is 1 so what should my answer be... it cant just be one because it holds to the hundreds value
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#2
i got the same thing in my chem class. i dont understand it at all. sry im of no help
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#3
It's 100... Deville why did I think you were older than me?
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#4
I hate the sig figs bullshit. I see 5, but I don't know if your teacher wants you to round or what

EDIT: OH MY GOD, I JUST TYPED SHIT WITH NO CODE IN IT AND IT DIDN'T GET CENSORED!
#5
idk. are you sure its one hundred?
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#6
It's 100


This, just had a test on significant figures on Friday.
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#7
Quote by C.C. Deville
idk. are you sure its one hundred?

If you're supposed to have only 1 sig. figure, then it would be 100
#8
Quote by C.C. Deville
idk. are you sure its one hundred?

Yeah definitely. The 1 in the problem makes it round to 1 sig fig, so it rounds to 100 because with out a decimal trailing zeros don't count.
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#10
alright thanks guys
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#11
100
that is the answer. it wants your to round from the first number, closes rounded number is 100, if it asked 2 sig figs then the answer would be 140.
see how that works?
#12
100, do you have a Ti-84 Silver Edition calculator? Theres a program that does sig figures on there.
#13
Quote by GaijinFoot
100
that is the answer. it wants your to round from the first number, closes rounded number is 100, if it asked 2 sig figs then the answer would be 140.
see how that works?


You're quick on the edit button my friend. I was just going to point out that it was 140, not 130.
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#15
just had a quiz on this BS today. makes no sense. plus my chem teacher has a heavy indian accept, further decreasing my understanding of the subject
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#16
Quote by C.C. Deville
I have an equation 4.18 x 1 x 33 =? and i have to put the answer in significant figures, the answer is 137.94 in the equation the lowest number of significant figures is 1 so what should my answer be... it cant just be one because it holds to the hundreds value

well are there exact values? are you dealing with stuff like grams, moles, or seconds? because if there are exact values is chem than those figures do not apply when doing sigfigs its the non-exact values that count
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#17
Quote by Skierinanutshel
question...to be picky.....where are the decimal points. is it "1." or just"1" ... it does matter

The decimals only matter if you have zeros at the end like 130 vs. 130. (2 sig figs vs 3)
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#18
Quote by synpet713192
I hate the sig figs bullshit. I see 5, but I don't know if your teacher wants you to round or what

EDIT: OH MY GOD, I JUST TYPED SHIT WITH NO CODE IN IT AND IT DIDN'T GET CENSORED!

Holy crap I quoted you and you're right!
#19
Quote by BillieJoeFreak:
The decimals only matter if you have zeros at the end like 130 vs. 130. (2 sig figs vs 3)


not necessarily. after two years of analytical chem lecture/lab, and being a chem major, they still matter. the answer could be 138 depending on how you look at it.
#20
no because 1 and 1. are different. if 1 is a perfect number it has infinite sig figs which changes everything. 1. only has one.
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#21
i like how people answer x1 x33 without asking if those are identities or actual data, if its identities you can use all figure as signifigant, if the 1 is an identity and the 33 is also you can use all sig figs, if the one isn't an identity you can only use one, and if the 33 isnt one you can use 2
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Last edited by hijeopi at Sep 18, 2008,
#22
its definitely 100. Or in scientific notation its 1 x 10^2
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