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anonymous
 one year ago
When 0.422g of phosphorus is burned 0.967g of a white oxide is obtained. Determine the empirical formula of the oxide
anonymous
 one year ago
When 0.422g of phosphorus is burned 0.967g of a white oxide is obtained. Determine the empirical formula of the oxide

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Shikamaru11
 one year ago
Best ResponseYou've already chosen the best response.0now what's that we gonna use the combustion analysis here too @Photon336 Sir???

Photon336
 one year ago
Best ResponseYou've already chosen the best response.0@Shalante this is your type of problem.

Photon336
 one year ago
Best ResponseYou've already chosen the best response.0i'm not sure myself @Shikamaru11 thoughts?

Rushwr
 one year ago
Best ResponseYou've already chosen the best response.1Combustion is when u burn it in air soo we have to write the balanced equation for the reaction between phosphorus and O2

Shikamaru11
 one year ago
Best ResponseYou've already chosen the best response.0Sir will be the equation is something like that?????????? \[P+ZnO \rightarrow ????\] hope i could think far

Rushwr
 one year ago
Best ResponseYou've already chosen the best response.1Wait I dnt think we need to go for the equation. We can just assume that all of the phosphorus is now in the oxide.

Photon336
 one year ago
Best ResponseYou've already chosen the best response.0\(\color{#0cbb34}{\text{Originally Posted by}}\) @Rushwr Combustion is when u burn it in air soo we have to write the balanced equation for the reaction between phosphorus and O2 \(\color{#0cbb34}{\text{End of Quote}}\) yeah, was thinking that too, BTW where did the zinc come from?

Rushwr
 one year ago
Best ResponseYou've already chosen the best response.1Considering phosphorus as the limiting agent

Shikamaru11
 one year ago
Best ResponseYou've already chosen the best response.0oh I got that in a second shot I think it mentioned white oxide but it's the obtant so my hypothesis failed :P

Shikamaru11
 one year ago
Best ResponseYou've already chosen the best response.0hey my guess of PO4 lolxxxx :P

Rushwr
 one year ago
Best ResponseYou've already chosen the best response.1we only need to find the empirical formula of the oxide right? So what if we consider that all of the phosphorus present are in the oxide now ? So the rest of the mass that is from 0.967 is oxygen SO the mass of oxygen in the oxide = 0.967  0.422 = 0.545g We can find the no. of moles of each separately Moles = mass/ molar mass moles of P = 0.422/ 31 = 0.014 moles Moles of Oxygen = 0.545/16 = 0.034 moles Now divide each by the smallest no. of moles dw:1444362596720:dw Now the ratio between P: O is 1:2.5 But we can't keep the ration in decimal numbers so to make it a whole number we multiply it by 2 so the new ratio would be 2:5 So the empirical formula would be P2O5

Rushwr
 one year ago
Best ResponseYou've already chosen the best response.1@Photon336 @Shikamaru11 What do u think Am i wrong somewhere?

Shikamaru11
 one year ago
Best ResponseYou've already chosen the best response.0hmmmm point to ponderwell you've won the world CUP :) friend @Rushwr

Rushwr
 one year ago
Best ResponseYou've already chosen the best response.1LOL ....... Thanks !!! @Shikamaru11

Shikamaru11
 one year ago
Best ResponseYou've already chosen the best response.0no dude you deserve it I'll call FIFA to give you the CUP next time :D :P :D

Rushwr
 one year ago
Best ResponseYou've already chosen the best response.1ROFL !!!!!!!!! Okai then I'll wait for it !!! >_< @Shikamaru11

Photon336
 one year ago
Best ResponseYou've already chosen the best response.0omg now is a great time for a study group.

Rushwr
 one year ago
Best ResponseYou've already chosen the best response.1hahahahahaha Yaaaaaaaaaaaaasssssssssssss @Photon336

Photon336
 one year ago
Best ResponseYou've already chosen the best response.0we've got Shalante you and shika

Rushwr
 one year ago
Best ResponseYou've already chosen the best response.1The only 2 missing here is Tara and woodward

Rushwr
 one year ago
Best ResponseYou've already chosen the best response.1Didn't hear from tara lately though

Rushwr
 one year ago
Best ResponseYou've already chosen the best response.1SO what are we up to ? Any questions before I leave.

Shikamaru11
 one year ago
Best ResponseYou've already chosen the best response.0:) i think that's enough for now my left eye got blanked and this chemistry :D but have you loved somebody :P @Rushwr

Shikamaru11
 one year ago
Best ResponseYou've already chosen the best response.0you asked us to questio so i did :D @Rushwr

Rushwr
 one year ago
Best ResponseYou've already chosen the best response.1LOL I meant chemistry ones not this !!! @Shikamaru11

Shikamaru11
 one year ago
Best ResponseYou've already chosen the best response.0oh Sorry sir mistake Action replay :D :P @Rushwr :) stay happy

Rushwr
 one year ago
Best ResponseYou've already chosen the best response.1LOL I will I will @Shikamaru11

Shikamaru11
 one year ago
Best ResponseYou've already chosen the best response.0@Rushwr sorry ma'm I asked the wrong one I didn't know that you're ma'm :)

Shikamaru11
 one year ago
Best ResponseYou've already chosen the best response.0@Rushwr thanks for being nice :)

Rushwr
 one year ago
Best ResponseYou've already chosen the best response.1No problem !!!! :) @Shikamaru11
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