Question #6ba04

1 Answer
Shell
Sep 7, 2016

The last step is incorrect.

Explanation:

You set the problem up correctly, but the last step

#(4.136625*10^24)/(6.022*10^23) = 6.869#

Then using the correct number of sig figs (from the 3 significant digits in 2.25) should give you 6.87g. Don't forget the unit.

It looks like you added the exponents in the last step. Learn to use the scientific notation key (EE) on your calculator.

Related questions
See all questions in The Mole
Impact of this question
1280 views around the world
You can reuse this answer
Creative Commons License