OpenStudy (anonymous):

1.A compound with a mass of 1.083g contains only carbon and sulfur. It is burned in oxygen. The mass of CO2 obtained after burning is 0.627g. What is the simplest formula of the compound? Pleaseeee HELPP!

5 years ago
OpenStudy (anonymous):

Use this reaction which describes the combustion. CS + O2 --> CO2 + (SO)x. use the weight of CO2 to calculate the mass of C that produced it. Then use the difference in mass to obtain the weight of sulfur Convert both C and S to moles, and find the ratio that describes it. Answer should be something like CS2

5 years ago
OpenStudy (anonymous):

weight of co2?

5 years ago
OpenStudy (anonymous):

do you mean like the atomic mass?

5 years ago
OpenStudy (anonymous):

The mass of CO2 obtained after burning is 0.627g

5 years ago
OpenStudy (anonymous):

\[0.627 g CO2 * (1 mole CO2)/(44g CO2) = X moles of CO2\]

5 years ago
OpenStudy (anonymous):

or you can use % compositions where 12/44*100 is the precent C in CO2

5 years ago
OpenStudy (anonymous):

i got the moles of co2, now what? sorry im kind of an idiot with thi s question in particular

5 years ago