Question about Texas Instruments TI-84 Plus Calculator

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Hi there, i'm doing some chemistry homework. I've entered the problem into my calculator numerous time to be sure i'm not missing anything but i'm getting what looks like this as an answer...2.45E-7 when the answer is actually .245mg... i'm thinking maybe one of the settings on my calculator is preventing me from getting the correct number but I can't figure out what it is... i've looked in my little manual and everything. help!!

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Hello,
My hunch is that you made an error in the units. Why not show us what you want to calculate (do not forget the units) and we will be happy to help.
Post a comment to this thread.
Hope it helps.

Posted on Oct 01, 2009

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My TI-89 won't solve for sin, cos, or tan. I can type in: sin(127) but instead of an answer it gives me sin(127) again. can someone please tell me how to fix this so that I can do my precalc homework?


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1 Answer

Trying to enter Chemistry equations and it won't work...


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anyway, the fraction button is on the far left, 3rd button down (it looks like a white box on top of a line, and below the line is another empty box). press that, and you can type 1.0x10^-14 on the numerator.
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i hope you like this caculator, it has so many functions (have you seen the size of the manual??)
good luck on your chemistry test!

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