Gafie
Posts: 2
Joined: Thu Jul 19, 2007 10:45 am

Pls Help

Postby Gafie » Thu Jul 19, 2007 10:56 am

How do you determine by experiment the mass of oxygen produced when a fixed mass of sodium nitrate is heated in air

Louise
Former Expert
Posts: 921
Joined: Mon Jan 16, 2006 2:17 pm

Re: Pls Help

Postby Louise » Sun Jul 22, 2007 9:57 am

Gafie wrote:How do you determine by experiment the mass of oxygen produced when a fixed mass of sodium nitrate is heated in air


There are many different ways to do this experimentally. How does the sodium nitrate change and how can you quantify that change? Can you relate a change in the physical properties (volume/mass/whatever) to the amount of oxygen released?

Sodium nitrate widely used as an explosive, so you need to be working with amounts of material and safety procedures approved by your teacher.


Louise

Gafie
Posts: 2
Joined: Thu Jul 19, 2007 10:45 am

Postby Gafie » Sun Jul 22, 2007 1:51 pm

but how do you Determine the mass of O2 produced when a fixed mass of NaNO3 is heated in air?

Louise
Former Expert
Posts: 921
Joined: Mon Jan 16, 2006 2:17 pm

Postby Louise » Sun Jul 22, 2007 2:53 pm

Gafie wrote:but how do you Determine the mass of O2 produced when a fixed mass of NaNO3 is heated in air?


How do the physical observables of the sodium nitrate change after oxygen has left?

I'm not going to give you the answer, just hints that will let you figure this out.

Louise


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