MC Q (1 Viewer)

[freeeeee]

Can anyone help me out with this MC?
http://www4.boardofstudies.nsw.edu....wer=C&courseID=15050&testQuestionID=302261663

 

[dawooddaman]

from the graph you have 8mgL^-1
you have 10 L, therefore 80mg

n = m/M = (80*10^-3)/(32) oxygen is diatomic therefore molecular mass = 16 + 16
n = 2.5*10^-3 Mol

therefore V = n * 24.79 = 61.975 *10^-3 L = 62 mL

Yindi's work

 

[Yindi]

Can anyone help me out with this MC?
http://www4.boardofstudies.nsw.edu....wer=C&courseID=15050&testQuestionID=302261663

http://community.boredofstudies.org/showthread.php?t=294826

 

[freeeeee]

haha nice =D, thanks for the help