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Topic: General chemistry  (Read 2567 times)

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Offline sweetie

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General chemistry
« on: November 06, 2008, 11:31:55 AM »
Hi,
I need some help with my homework...
here it is:
Your measured height in cm was different from the calculated height in cm. Why is this statement true?

and:
when you calc. the density of your round metal cylinders, how did you determine the cylinder's volume?

Offline Astrokel

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Re: General chemistry
« Reply #1 on: November 06, 2008, 11:44:08 AM »
I believe it is about uncertainty in your measurement. Have you learnt about that?
No matters what results are waiting for us, it's nothing but the DESTINY!!!!!!!!!!!!

Offline sweetie

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Re: General chemistry
« Reply #2 on: November 06, 2008, 12:14:59 PM »
yea is did actually, i looked at my previous labs and figured it out. can u helpme with this one instead, it has me for a loop.:
calc. the amount of thermal energy necessary to raise the temp of a salt/ice water mixture at 12 degrees C to constant evaporation at 103 degrees C. specific heat C of water is 1.00 cal/gram degree. /\  T <--(that on the left is suppost to be a triangle) is temp. change.

cal=mass (grams) (c) ( /\ T )

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