Question
Asked Nov 15, 2019
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A 2.0 g sample of ethylene (C2H4, molecular weight 28.05 g/mol) is combusted in pure oxygen (02.
molecular weight 32.00 g/mol). What mass of CO2 (molecular weight 44.01 g/mol) was generated?
4CO
Hoo
Cab
A. 22.82 g
B. 17.88 g.
C. 11.21 g.
D. 6.28 g.
E. none of the above.
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A 2.0 g sample of ethylene (C2H4, molecular weight 28.05 g/mol) is combusted in pure oxygen (02. molecular weight 32.00 g/mol). What mass of CO2 (molecular weight 44.01 g/mol) was generated? 4CO Hoo Cab A. 22.82 g B. 17.88 g. C. 11.21 g. D. 6.28 g. E. none of the above.

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Expert Answer

Step 1

Given

Mass of ethylene provided= 2.0g

Moles of ethylene

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mass given No. of moles. molar mass 2.0 28.05 =0.0713

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Step 2

The reaction for the combustion of ethylene

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Сн +30, 2CO2 +2H20

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Step 3

According to the...

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one mole of C,H4 give 2 moles of Co, therefore no of moles of CO,=2x moles of C,H 4 -2x0.0713mol -0.1426mol mass of CO2 moles x molar mass =0.1426x 44.01g = 6.2758g

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