Homework Help: AP Chem

Posted by Anna on Sunday, October 5, 2008 at 6:57pm.

Calculate the number of atoms in 32.0 g Br2.

I keep getting 1.20 * 10^23 atoms Br2 but my book says i'm wrong.

AP Chem - DrBob222, Sunday, October 5, 2008 at 8:18pm
I wonder if you multiplied the Br2 79 x 2? Its 79.9. I would do 32/160)*2*6.02 x 10^23 = 2.4 x 10^23?

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