Here is the question:
Automobile air bags use the decomposition of sodium azide as their source of gas for rapid inflation:
2NaN3(s)-->2Na(s)+3N2(g)
What mass (g) of NaN3 is required to provide 40.0 of N2 at 25.0 C and 763 torr?
Here is my work:
P=1.0039atm or 763torr
V=40.L
R=.0821
T=298.15K
PV/RT=n and my answer comes out to be 65.0099 which I multiply times 3/2 to convert to NaN3 then multiply that number my molecular weight (65.009) to get 6320193.00741
The assessment is saying this answer is incorrect can anyone tell me what I am doing wrong?
2 answers
There is 2/3 as much NaN3 as N2. Flip your ratio on the conversion.
Once again thank you Bob, I think my brain is fried for the day. I would stop if I did not have 4 more questions to go. Hopefully I can get them on my own now that I figured out the calculator issues I was haveing.
2 answers