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When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 16.8...

When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 16.8 g of carbon were burned in the presence of 60.5 g of oxygen, 15.7 g of oxygen remained unreacted. What mass of carbon dioxide was produced? Using one decimal placement

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Answer #1

ANSWER. When carbon is burned in air it reacts with oxygen to form CO2.Thestoichiometric equation is given by

C + O2 CO2  ----------(1)

According to the eq(1) 1 mole of carbon reacts with 1 mole of O2 molecule produces 1 mole of CO2.   Given that 16.8 g of C burned with 44.8 g of O2.i.e 1.4 moles of C reacts with 1.4 moles of O2.So 1.4 moles of CO2.

Mass of   CO2 obtained =moles of  CO2 xmolar mass =1.4x44=61.6 g.

Mass of  CO2 produced =61.6 g

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