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dimulka [17.4K]
3 years ago
12

How many moles of O2 are required if 12 moles of CuFeS2 are consumed?

Chemistry
2 answers:
matrenka [14]3 years ago
5 0

Answer:- 30 moles of oxygen are required if 12 moles of CuFeS_2 are consumed.

Solution:- The given balanced equation is:

2CuFeS_2+5O_2\rightarrow 2Cu+2FeO+4SO_2

From this balanced equation, there is 2:5 mol ratio between CuFeS_2 and O_2 .

We are asked to calculate the moles of O_2 required to react with 12 moles of CuFeS_2.

It's a mol to mol conversion and the set up for this would be as:

12 mol CuFeS_2(\frac{5 mol O_2}{2 mol CuFeS_2})

= 30 mol O_2

So, 30 moles of oxygen are required to react with 12 moles of CuFeS_2 .

Sonbull [250]3 years ago
4 0
12.5/2=30 
is your answer Idk how to make it longer 
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A mixture of two gases has a total pressure of 5.7 atm . If one gas has a partial pressure of 4.1 atm , what if the partial pres
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The following solutions are prepared by dissolving the requisite amount of solute in water to obtain the desired concentrations.
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Answer:

CaCl₂ > CH₃OH = LiCl > C₆H₁₂O₆

Explanation:

The osmotic pressure of a compound is calculated using the following expression:

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This expression is used when the substance is nonelectrolyte. If the solution is electrolyte solution then we need to count the van't hoff factor into the expression so:

π = MRTi  (2)

Now, we have 4 solutions here, only two of them are electrolyte solution, this means that these solutions can be dissociated into separate ions. These solutions are LiCl and CaCl₂. It can be shown in the following reactions:

LiCl -------> Li⁺ + Cl⁻     2 ions   (i = 2)

CaCl₂ ---------> Ca²⁺ + 2Cl⁻      3 ions (i = 3)

The methanol (CH₃OH) and glucose (C₆H₁₂O₆) are non electrolyte solutions, therefore they are not dissociated. So, let's use expression (1) for methanol and glucose, and expression (2) for the salts:

CaCl₂:   π = 1 * 3 * RT = 3RT

CH₃OH:   π = 2 * RT = 2RT

C₆H₁₂O₆:  π = 1 * RT = 1RT

LiCl: π = 1 * 2 * RT = 2RT

Finally with these results we can conclude that the decreasing order of these solutions according to their osmotic pressures are:

<h2>CaCl₂ > CH₃OH = LiCl > C₆H₁₂O₆</h2>
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