chem 101
March 31, 2011 8:22 PM Subscribe
This is an easy Chem. 101 ? inside for anyone (seriously anyone) that's been through a course like this. Thanks!
The mass of your solid is found to be 17.62 grams. The initial volume of water in your 10-mL graduated cylinder before adding the solid is 2.7 mL. The final volume after adding your solid is 6.4 mL. What is the density of your solid in g/mL (using the correct number of significant figures)?
The mass of your solid is found to be 17.62 grams. The initial volume of water in your 10-mL graduated cylinder before adding the solid is 2.7 mL. The final volume after adding your solid is 6.4 mL. What is the density of your solid in g/mL (using the correct number of significant figures)?
This post was deleted for the following reason: Oooookiedoke. -- cortex
Wow, yeah.
posted by unknowncommand at 8:31 PM on March 31, 2011
posted by unknowncommand at 8:31 PM on March 31, 2011
Seriously? The units that you're supposed to give the answer in tell you how to solve the problem.
posted by supercres at 8:32 PM on March 31, 2011
posted by supercres at 8:32 PM on March 31, 2011
COLD BUSTED
posted by spikeleemajortomdickandharryconnickjrmints at 8:33 PM on March 31, 2011
posted by spikeleemajortomdickandharryconnickjrmints at 8:33 PM on March 31, 2011
Response by poster: lalex, the second and last one were not homework, also fuck the rest of you as well.
posted by Benzle at 8:33 PM on March 31, 2011 [1 favorite]
posted by Benzle at 8:33 PM on March 31, 2011 [1 favorite]
Response by poster: spikeleemajortomdickandharryconnickjrmints, you seem cool though.
posted by Benzle at 8:34 PM on March 31, 2011
posted by Benzle at 8:34 PM on March 31, 2011
For the part of the problem that isn't given in the units:
http://en.wikipedia.org/wiki/Significant_figures
Google is your friend.
posted by hot soup at 8:34 PM on March 31, 2011
http://en.wikipedia.org/wiki/Significant_figures
For multiplication and division, the result should have as many significant digits as the measured number with the smallest number of significant digits.Wikipedia is your friend.
For addition and subtraction, the result should have as many decimal places as the measured number with the smallest number of decimal places.
Google is your friend.
posted by hot soup at 8:34 PM on March 31, 2011
Wow, didn't preview:
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posted by hot soup at 8:39 PM on March 31, 2011
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posted by hot soup at 8:39 PM on March 31, 2011
This thread is closed to new comments.
My 8th grader can figure this one out. If you can't, you shouldn't be in the class....
(what's the volume of your solid? divide the mass by the volume. et voila, density. The rest is left as an exercise for the student.)
posted by jlkr at 8:31 PM on March 31, 2011