Asked by Stephanie

How do you calculate the mass, in amu of 2287 atoms of Li

Answers

Answered by Stephanie
sorry its 287 atoms
Answered by Jose
Hey, if all hope is lost try this...let me know if it makes sense....

use stoicheometry.

(287 amu of Li/ 1 )*( 1 mol/ 6.02 x 10^23) * ( 6.94g Li/ 1 mol)

this makes more clearer as fractions on paper....hope this helps. i did this and got 3.31 x 10^-21. (numbers may vary slightly with decimals cuz of periodic tables and diff. masses.)
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