Determine the mass of CO2produced by burning enough carbon (in the form of charcoal) to produce...

Question

Question

Determine the mass of CO2produced by burning enough carbon (in the form of charcoal) to produce 450 kJ of heat.
C(s)+O2(g)→CO2(g)ΔH∘rxn=−393.5kJ

science chemistry

Answer 1

Answer #1

Formula used

Mass = mol x molar mass

Mol = mass / molar mass

Solution

In this reaction 1 mol C give 393.5 kJ

We have to find moles of C for 450 kJ

Mol C = 450 kJ x 1 mol / (393.5 kJ )

=1.14 mol C

Moles of CO2 produced from 1.14 mol C

= 1.14 mol C x 1 mol CO2 / 1 mol 1.14

= 1.14 mol CO2

Mass of CO2 = 1.14 mol x 44.01 g/mol

=50.33 g

Mass of CO2 produced = 50.33 g

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Answer 2

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