Quote:
Originally Posted by aero135  GUYS! I have a good feeling 90% of state wrote C for the last MC question but i know taht cant be write. DId anyone get A or andd B and can explain how? |
I got A.
Concentration of oxygen was 8mg/L, but there was a 10L sample, so 80mg/10L.
n = mass/molar mass = volume/molar volume.
Volume = molar volume x mass/molar mass = 24.79 x 0.08/32 = 0.062L = 62 mL.
Answer is A. I hope.