00 O Canvas c = 3.0 x 108 m/s; h= 6.626 x 10 -34 J s; NA = 6.022 × 1023 moles-1 C = AV AE =hv q=spht x m x AT Question 32 How many grams of ethylene (C2H4; 28.06 g/mol) would have to be burned to produce 450,000 J of heat? C2H4 (g) + 3 O2 (g) → 2 CO2 (g) + H2O (1) Delta H° %3! ux = -1411 kJ/mol 31.9 g O 8.95 g O 0.319 g O 0.819 g « Previous Ne. No new data to save. Last checked at 9:37pm Subr 02 F3 F2 888 DD F5 & 4 3. R S
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
![00
O Canvas
c = 3.0 x 108 m/s; h= 6.626 x 10 -34 J s; NA = 6.022 × 1023 moles-1
C = AV AE =hv q=spht x m x AT
Question 32
How many grams of ethylene (C2H4; 28.06 g/mol) would have to be burned to produce 450,000 J of heat?
C2H4 (g) + 3 O2 (g) → 2 CO2 (g) + H2O (1)
Delta H°
%3!
ux
= -1411 kJ/mol
31.9 g
O 8.95 g
O 0.319 g
O 0.819 g
« Previous
Ne.
No new data to save. Last checked at 9:37pm
Subr
02
F3
F2
888
DD
F5
&
4
3.
R
S](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff7cf98a7-ad0e-427a-9d97-cc21c785b93e%2Faec21177-837d-488d-a6d9-88fe94558720%2Fa7c6u4i.jpeg&w=3840&q=75)
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