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Author Topic: What would the mass of the electron  (Read 2227 times)

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XxTheJMan18xX

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What would the mass of the electron
« on: September 28, 2006, 12:51:36 PM »

 A student has determined the mass-to-charge ratio for an electron to be 5.64 x 10-12kg/C. In another experiment using Millikan's oil-drop apparatus, he found the charge on the electron to be 1.61e-19 C. What would the mass of the electron according to these data?
(Type your answer using the format 8.050e-3 for 8.050 x 10-3.)



I CANNOT FIGURE THIS OUT FOR THE LIFE OF ME....PLEASE DESPERATE NEED OF HELP....THANKS
« Last Edit: September 30, 2006, 10:41:49 PM by Mitch »
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enahs

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Re: PLEASE *delete me*!!!!
« Reply #1 on: September 28, 2006, 01:13:21 PM »

People are here to help not do you work for you. Read the rules. You clearly just copied and pasted the question (and it is clearly is from some computer questionnaire system). And please use a descriptive subject line.


Tell us what you have tried and where you think you are going wrong.

Math is a tool in chemistry (and in science in general). Make sure you first understand what the question is and the principles involved. Do you understand the units? Etc. Then proceed to the math.



Hint: It is really easy.
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XxTheJMan18xX

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Re: PLEASE *delete me*!!!!
« Reply #2 on: September 28, 2006, 01:15:45 PM »

Honestly....i don't understand it all....and yes i copied it from my lab report....but only to show the question in full so that people knew what i was talking about....I have tried basically every thing and for some reason...i can't get it still.....if perhaps starting me off with the answer so i can get the jist of this question and finish it off myself?!?

I would greatly appreciate any sorts of help on this
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enahs

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Re: PLEASE *delete me*!!!!
« Reply #3 on: September 28, 2006, 02:53:34 PM »

You should understand why, but the only thing you need to get the correct answer and not understand anything about it is dimensional analysis.
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Donaldson Tan

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Re: PLEASE *delete me*!!!!
« Reply #4 on: September 30, 2006, 09:57:27 PM »

Threadstarter: You are risking a possible lock or deletion of this thread..

Here's a hint: mass/charge = k

You know the charge and the value k.
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