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Chemistry 19 Online
OpenStudy (kj4uts):

1. The reaction of sulfur with oxygen is shown below. 2S(s) + 3O2(g) → 2SO3(g) Calculate the mass of sulfur trioxide (in g) produced when 100.0 g of each reactant is present. A. 100.0 B. 166.8 C. 249.7 D. 200.0 I do know that the molar mass of sulfur trioxide is 80.066 g/mol.

OpenStudy (kj4uts):

When it says reactant is it referring to 2S(s) + 3O2(g)?

OpenStudy (kj4uts):

@NvidiaIntely

OpenStudy (kj4uts):

The molar mass of O2 is 15.999*3=47.997 "3O2(g)"

NvidiaIntely (nvidiaintely):

I thought its referring to 2S(s).

OpenStudy (kj4uts):

Oh yeah I see what you mean, would that be sulfur?

NvidiaIntely (nvidiaintely):

yes

NvidiaIntely (nvidiaintely):

(i knew there must have been a reason I got that title)

OpenStudy (kj4uts):

Lol

OpenStudy (kj4uts):

So then the molar mass would be 32.06 and the *2 = 64.12

OpenStudy (kj4uts):

I am just confused where I go from there?

OpenStudy (kj4uts):

Do they mean 100 g of the sulfur?

NvidiaIntely (nvidiaintely):

yes

NvidiaIntely (nvidiaintely):

Do you get it now?

NvidiaIntely (nvidiaintely):

1 gram of sulfur is 0.0124901327951 moles.

OpenStudy (kj4uts):

So if you take 0.0124901327951*100=1.24901328

NvidiaIntely (nvidiaintely):

Yeah

OpenStudy (kj4uts):

So 100 grams of Sulfur Trioxide = 1.249013279

NvidiaIntely (nvidiaintely):

Yeah, I think so.

OpenStudy (kj4uts):

Ok thanks I think I got it :)

NvidiaIntely (nvidiaintely):

So you got the answer to the question?

NvidiaIntely (nvidiaintely):

What is the answer?

NvidiaIntely (nvidiaintely):

Wait....option A is 100.0.

NvidiaIntely (nvidiaintely):

We have to find the mass of sulfur in grams.

OpenStudy (kevin):

try to find limited reagent

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