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Pyrite is a mineral with formula FeS2. An impure sample of pyrite, known to be 90-95% w/w FeS2, is to be analyzed by oxidizing all the sulfur to SO42-
Pyrite is a mineral with formula FeS2. An impure sample of pyrite, known to be 90-95% w/w FeS2, is to be analyzed by oxidizing all the sulfur to SO42-, and then precipitating as BaSO4. Exactly how many grams of the sample must be taken if a minimum of 1.0 gram of BaSO4 is desired? ( stoichiometry).
- Answers
- • 1 pages •
-
• chem 101
Pyrite is a mineral with formula FeS2. An impure sample of pyrite, known to be 90-95% w/w FeS2, is to be analyzed by oxidizing all the sulfur to SO42-, and then precipitating as BaSO4. Exactly how many grams of the sample must be taken if a minimum of 1.0 gram of BaSO4 is desired? ( stoichiometry).
Question: Balance following equations: C3H8 O2 → CO2 H2O Al2(SO3)3 NaOH → Na2SO3 Al(OH)3 Al2O3
Question:
Balance following equations:
C3H8 O2 → CO2 H2O 
 Al2(SO3)3 NaOH → Na2SO3 Al(OH)3 
 Al2O3 Fe → Fe3O4 Al 

Difficult section

S HNO3 → H2SO4 NO2 H2O 
Cu HNO3 → Cu(NO3)2 NO H2O

- Answers
- • 2 pages •
-
• chem 101
Question:
Balance following equations:
C3H8 O2 → CO2 H2O 
 Al2(SO3)3 NaOH → Na2SO3 Al(OH)3 
 Al2O3 Fe → Fe3O4 Al 

Difficult section

S HNO3 → H2SO4 NO2 H2O 
Cu HNO3 → Cu(NO3)2 NO H2O

Magnesium sulfate reacts with barium chloride according to the following balanced equation. If 1.20 g of magnesium sulfate is allowed to react with 10
Magnesium sulfate reacts with barium chloride according to the following balanced equation. If 1.20 g of magnesium sulfate is allowed to react with 10.0 g of barium chloride in a water solution, what is the theoretical yield of barium sulfate?
MgSO4(aq) BaCl2(aq) → BaSO4(s) MgCl2(aq)


- Answers
- • 2 pages •
-
• chem 101
Magnesium sulfate reacts with barium chloride according to the following balanced equation. If 1.20 g of magnesium sulfate is allowed to react with 10.0 g of barium chloride in a water solution, what is the theoretical yield of barium sulfate?
MgSO4(aq) BaCl2(aq) → BaSO4(s) MgCl2(aq)


If a mixture of 35.8 g of CH4 and 75.5 g of S reacts, how many grams of H2S are produced? CH4(g) 4S(g) → CS2(g) 2H2S(g)
If a mixture of 35.8 g of CH4 and 75.5 g of S reacts, how many grams of H2S are produced?
CH4(g) 4S(g) → CS2(g) 2H2S(g)
Express your answer with the appropriate units.

- Answers
- • 2 pages •
If a mixture of 35.8 g of CH4 and 75.5 g of S reacts, how many grams of H2S are produced?
CH4(g) 4S(g) → CS2(g) 2H2S(g)
Express your answer with the appropriate units.

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