[wannabe1]

So we are told to calculate the value of w(work) for the following system: 2NaN₃(s) :rarrow:2Na(s)+3N₂(g)
if 21.5g of NaN₃ reacts completely at 1atm and 22.0 degrees celsius

so I know that w=(change in n)RT

So I know when 21.5g of NaN₃, that means 0.496 moles of N₂ are produced and 0.331 moles of Na.
And also 21.5g of NaN₃ is 0.331 moles of NaN₃.
I am stuck from here and am not sure what I did is right so far.

[Borek]

so I know that w=(change in n)RT

Change of n of what?

[wannabe1]

this is jsut using the ideal gas law, PV=nRT
and w=-PV
so using those too I get w=nRT

[Borek]

What is n in this equation, and how it is related to the question?

[wannabe1]

would n represent the change in grams of the solid?

[wannabe1]

actually it would represent the amount of gas produced I believe

[wannabe1]

Never mind I solved it.  Thanks for your help.

[Borek]

actually it would represent the amount of gas produced I believe

And that's the answer I hoped to hear