Gaia online seriously doesnt help at ALL. All the replies I got were "Wha?" or "I threw that stuff out LONG AGO". Hope that isnt the same here Cough and no one goes to my school who knows about the rule about these questionscough cough:ninja: . So here goes (just guide me through this):
1)Thiophene is a liquid compound of the elements C, H, and S. A sample of thiopene weighing 7.96 mg was burned in oxygen, giving 16.65 mg CO2. Another 4.31 mg sample was subjected to a series of tests which converted all of the sulfur into 11.96 mg of barium sulfate.
Find its emperical formula
Found this on wikipedia–>C4H4S. Emperical is the shortened form of this equation right? So its C2H2S?
But the work to find this is like, separating the elements out, then find percentages, then thier whole number right?
(Ill do these as I go)
Then separate it out like: 7.96 mg of sample * 12 C / 44 CO = 4. But on my t--er homework I got a percentage first then somehow got '2'
Something like that?
But I had trouble finding out H. Is it the same as before? Because my teacher did something with 100-(some percent which i didnt know how to get) and got another percent.
The next part is this: If its molar mass is discovered to be 84 amu, what is its molecular formula?
I just need help showing the work here....
The next question is: Water is added to 4.267 grams of UF6. The only products are 3.730 g of a solid only containing uranium, oxygen, and fluorine and 0.970 grams of a gas. The gas is 95.0% flourine the rest is hydrogen.
A) What is the emperical formula of the gas?
B) What fraction of the flourine of the original compound is in the solid and what fraction is in the gas after the reaction?
C)What is the formula of the solid product?
I really dont get this one because we were pressed for time when we had to turn this assignment in cough cough
