Login

Search the forums now!

Welcome, Guest. Please login or register.

November 01, 2025, 12:51:57 pm
Pages: [1]   Go Down

Author Topic: ERROR IN 2008 NEAP??? please help ..thanks :)  (Read 541 times)  Share 

0 Members and 1 Guest are viewing this topic.

matt123

  • Victorian
  • Part of the furniture
  • *****
  • Posts: 1653
  • Strive.
  • Respect: +6
ERROR IN 2008 NEAP??? please help ..thanks :)
« on: November 09, 2010, 12:30:09 pm »
0
q3a.

The grubber salt formula is

Na2s04. 10h20

they said the Molar mass = 322 ( only used 1 h20)
is this a typo?
I thought there are 10 h20's in it .. = 10X180 + the rest of the molar mass = 1942 ish
not 322? why did they only include 1 h20 ?? ... error? or am i missing something lol
Logged
2009 : Physical Education
2010  ATAR : 91.45 , Bio , Chem , Methods , Psychology , English
Completed VCE at the age of 16.
2011 : Bachelor of pharmacy
2012 : Hopefully med? " crosses fingers"

JinXi

  • Victorian
  • Forum Leader
  • ****
  • Posts: 818
  • Respect: +90
  • School: Camberwell High School
  • School Grad Year: 2010
Re: ERROR IN 2008 NEAP??? please help ..thanks :)
« Reply #1 on: November 09, 2010, 12:32:16 pm »
0
Na2SO4.10H20

46+32+64+180 = 322?

Why did u go 10x180? h20 has a mass of 18.
Logged
Monash B.Aero Eng/Sci Discontinued in Sem2 2012 [2011-2015]

"I will always choose a lazy person to do a difficult job… because, he will find an easy way to do it." ~ Bill Gates
^ SNORLAX, I chooosee You!!!

superflya

  • Victorian
  • Part of the furniture
  • *****
  • Posts: 1763
  • EL-Heat.
  • Respect: +8
Re: ERROR IN 2008 NEAP??? please help ..thanks :)
« Reply #2 on: November 09, 2010, 12:33:35 pm »
0
he added an extra 0 :P
Logged
2010- English, Methods (CAS), Physics, Specialist, Chem.
2011- Bachelor of Commerce/Aerospace Engineering - Monash


"The day i stop learning, is the day i walk away from the game" Michael Jordan.

matt123

  • Victorian
  • Part of the furniture
  • *****
  • Posts: 1653
  • Strive.
  • Respect: +6
Re: ERROR IN 2008 NEAP??? please help ..thanks :)
« Reply #3 on: November 09, 2010, 12:34:23 pm »
0
Quote from: JinXi on November 09, 2010, 12:32:16 pm
Na2SO4.10H20

46+32+64+180 = 322?

Why did u go 10x180? h20 has a mass of 18.


LOL EMBARRASSING
ROFLLLLLL I did the maths 18X10 = 180 ..
hahahahahahha massive fail .. its not 180X10
LOLLLLLLLLLLLLLL

ok kill me now hahah
so embarrassing .. haha
Logged
2009 : Physical Education
2010  ATAR : 91.45 , Bio , Chem , Methods , Psychology , English
Completed VCE at the age of 16.
2011 : Bachelor of pharmacy
2012 : Hopefully med? " crosses fingers"
Pages: [1]   Go Up