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Ratling [72]
3 years ago
15

I NEED HELP! I WILL RATE BRAINLIEST!!!!

Chemistry
2 answers:
Masja [62]3 years ago
8 0
4.0 moles were used. hope ive helped you! please rate brailiest. :)
Tju [1.3M]3 years ago
4 0
The answer should be A. 12 moles

(All numbers you see are GIVEN from the equation)
12molCO2/1 * 3molCO/3mol CO2
All you have to do is multiply 3 and 12 then divide by 3 to get 12moles 
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When 150. g zinc sulfide are burned in excess oxygen, 68.5 g of zinc oxide are actually produced, along with sulfur dioxide. Det
Bumek [7]

%yield = 54.6%

<h3>Further explanation</h3>

Percent yield is the compare of the amount of product obtained from a reaction with the amount you calculated

(theoretical)

General formula:

Percent yield = (Actual yield / theoretical yield )x 100%

<h3 />

Reaction

2ZnS+3O₂ ⇒ 2ZnO+2SO₂

MW ZnS = 97.474 g/mol

  • mol ZnS

\tt \dfrac{150}{97.474}=1.54

MW ZnO = 81.38 g/mol

  • mol ZnO (from mol ZnS as limiting reactant, O₂ excess)

\tt \dfrac{2}{2}\times 1.54=1.54

  • Actual ZnO produced

\tt 1.54\times 81.38=125.33~g

Theoretical production = 125.388

  • %yield

\tt \dfrac{68.5}{125.33}\times 100\%=\boxed{\bold{54.6\%}}

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3 years ago
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ANSWER:

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A battery is a device that stores chemical energy and converts it to electrical energy.

Explanation:

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The diagrams show gases that are stored in two separate but similar containers.
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Answer: The diagrams show gases that are stored in two separate but similar containers. If both gases are at the same temperature, which one has the greater pressure? Gas 2 because it has more particles that are colliding.

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For the following hypothetical reaction: 3A + 3B —&gt; 2C. How many moles of B will you need to convert 4 moles of A into as man
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Do you still need this??

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