Question
Asked Nov 18, 2019
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A chemist measures the energy change AH during the following reaction:
C3Hg(g)+502(g) 3 CO2(g)+4H20()
AH=-2220. kJ
Use the information to answer the following question.
Suppose 81.1 g of C2Hg react.
x10
Calculate how much heat will be released
absorbed.
kJ
?
Be sure your answer has the correct number of
significant digits.
X
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A chemist measures the energy change AH during the following reaction: C3Hg(g)+502(g) 3 CO2(g)+4H20() AH=-2220. kJ Use the information to answer the following question. Suppose 81.1 g of C2Hg react. x10 Calculate how much heat will be released absorbed. kJ ? Be sure your answer has the correct number of significant digits. X

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Expert Answer

Step 1

The given reaction is shown below.

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c,H, (8)+50, (g)3CO, (g)+ 4H,0 (1)

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Step 2

The change in enthalpy for the given is -2220 kJ.

 

The negative sign of ∆H means that the reaction is an exothermic. It means that the system released a heat. Exothermic reactions are those reactions in which energy is released after the completion of reaction.

Step 3

The given weight of C3H8 is 81.1 g.

The chemical name of C3H8 is propane.

The molar mass of C3H8 is 44.1 g/mol.

 

The number of ...

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