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Ganezh [65]
3 years ago
8

Energy cannot be created or destroyed. Does the statement describe a scientific law?

Chemistry
1 answer:
LekaFEV [45]3 years ago
3 0
Yes, the law of thermodynamics, or Law of Conservation of Energy
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C5H12 + 8O2 → 5CO2 + 6H2O<br><br> Calculate the energy change for the reaction:
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C5H12 (l) + 8O2 (g) ----> 5CO2 (g) + 6H2O (l)
Delta H = -3505.8 kJ/mol

C (s) + O2 (g) -----> CO2 (g)
Delta H = -393.5 kJ/mol

H2 (g) + (1/2)O2 (g) ------> H2O (l)
Delta H = -286 kJ/mol

Possible answers:
a. +35 kJ/mol
b. + 1,073 kJ/mol
c. -4,185 kJ/mol
d. -2,826 kJ/mol
e. -178 kJ/mol
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