Question
Asked Jan 29, 2020
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This reaction shows the complete combustion of octane, C8H18, a component of gasoline.
2 C8H18(l) + 25 O2(g) 16 CO2(g) + 18 H2O(l)

(b) How many moles of CO2 are produced when 0.11 mol of C8H18 are burned?

(c) How many grams of O2 are needed to burn 1.15 g of C8H18?

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Expert Answer

Step 1

The given balanced chemical reaction is shown below.

Chemistry homework question answer, step 1, image 1
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Step 2

According to the given balanced chemical reaction, shown below, 16 mol of CO2 is produced when 2 mol of octane is combusted. When 0.11 mol of octane is combusted then the number of mol of CO2 (n) produced in reaction is calculated as shown below where nCO2 and nC8H18 is the number of moles of carbon dioxide and octane respectively. So, when 0.11 mol of octane is combusted then the number of mol of CO2 (n) produced in reaction is 0.88 mol.

Chemistry homework question answer, step 2, image 1
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Step 3

The number of moles (n) in 1.15 g of octane is calculated as shown below ...

Chemistry homework question answer, step 3, image 1
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