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March 27, 2015

Homework Help: Chemistry+need help checking work

Posted by Chopsticks on Wednesday, January 7, 2009 at 7:28pm.

Using aervage atmoic masses for each of the following elements, calculate the mass, in amu (grams)

A. 635 atoms of hydrogen

---> 1 mole of H = 1.01g = 6.022 x 10^23 atom

635 atom of H 1.01g/6.022 x 10^23 atom

I got 1.06 x 10^-21 amu. I got that answer buying the "E" button on my calculator. Instead of putting 6.022 x 10^23 I just put 6.022E23

But if I use the "^" I get 1.07 x 10^25

Which one is right?

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