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Step2247 [10]
3 years ago
7

Ignore thisthanks (:

Chemistry
2 answers:
Vikki [24]3 years ago
6 0
The answer is ignore this thanks
Misha Larkins [42]3 years ago
4 0

Answer:

Really, well I didn't.  

SOrry.

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Explanation:

                        C₃H₈ (g)  + 5 O₂ (g) =============== 3 CO₂ (g)  +  4 H₂O (l)

Δ⁰Hf   kJ/mol       -104             0                                       -393.5         -285.8

Δ⁰Hcomb C₃H₈ = 3(-393.5) + 4 (-285.80) - (-104)  kJ/mol

Δ⁰Hcomb = 2219.70 kJ/mol

n= m /MW   MW c₃H₈ = 44.1 g/mol

n= 12 g/44.1 g/mol = 0.27 mol

then for 12 g the heat released will be

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