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Topic: Dimensional Analysis (DA)  (Read 2687 times)

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Offline Titanium1791

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Dimensional Analysis (DA)
« on: November 07, 2008, 04:00:27 PM »
Hi there,

I'm learing Dimesional Analysis in Chemistry right now, and this seems to be confusing, as far as solving for 2 step equations. This is the equation: How many atoms are in 3.6 grams of Copper?

My results so far: Known               Math
                        3.6 g Cu             3.6 g Cu * 63.546 atoms Cu  (divided by)
                                                              1 g CU
                        ? atoms Cu                                           
                                                 Solved by  multiplying (3.6*1)(/63.546)=.056 g Cu
                        63.546 atoms Cu

I know that I still have more steps to go, but I'm confused on how to solve this Dimensional Analysis problem.

Thanks!

-Titanium1791


                     



                       
                       


Offline Borek

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Re: Dimensional Analysis (DA)
« Reply #1 on: November 07, 2008, 04:31:38 PM »
63.546 atoms Cu

63.546 is a molar mass of copper, and as such has units g/mol, no atoms here.
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