Ask Me Help Desk

Ask Me Help Desk (https://www.askmehelpdesk.com/forum.php)
-   Chemistry (https://www.askmehelpdesk.com/forumdisplay.php?f=68)
-   -   Ask chemistry questions (https://www.askmehelpdesk.com/showthread.php?t=653353)

  • Apr 22, 2012, 12:19 PM
    danibey
    ask chemistry questions
    1) Copper is made up of two isotopes, Cu-63 and Cu-65. Given copper's atomic weight of 63.546 what is the percent abundance of each isotope?




    2) Calculate the number of ions present in .25 moles of NaCl(aq)




    3) Determine the mass of 1.20 X 10 to the 23 molecules of N2O5

  • All times are GMT -7. The time now is 03:39 PM.