How much heat (in kJ) is required to warm 16.0g of ice, initially at -14.0 degree Celsius, to steam at 115 degree Celsius? The heat capacity of ice is 2.09 J/ g*C and heat capacity of steam is 2.01J/g*C (answer in kJ and 3 sigfigs)
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.
How much heat (in kJ) is required to warm 16.0g of ice, initially at -14.0 degree Celsius, to steam at 115 degree Celsius? The heat capacity of ice is 2.09 J/ g*C and heat capacity of steam is 2.01J/g*C
(answer in kJ and 3 sigfigs)
My attempt equaled 7680.04 kJ but is incorrect, thank you for the help
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3) how
16.0
g
how much heat (KJ) is required to warm
at 115 °C ?
of ice, initially at -14°C, to steam
the heat capacity of ice is
-1
and
2.095.g²¹.c
is 2.015.g¹.c ²
D
2
3
S
O
the that of steam
[KS to ssig figs]
8₁-
mc AT
(warm to melting point)
tq ₁ =
9₁ = (16.05) (2.095/9.c) (0.0°7--14°c)
468.16
16.08h00 x
= 0.8879
2
q₂ = AHFUS * mol
(6.023) (0.88791) = S. 345172031KS
imcl
18.028
93= MC AT
(warm to boiling point)
(16.05 )( 4.18 3/9-c) ( 100°C -0.0⁰)
83= 6682
8₁ = Autlvap xmol
9 ₁ = (40.715 /mol ) ( 0.8879)
(Phase change)
84 = 136 137 534 J
8 5 = MCAT
(16.09) (2.01 3/g.c) ( 115 - 100
qs =
482.4 к5
Total: 7680.042702 KS
(wam to gas)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3d57ba8c-0b2f-4dbb-833e-9f04fd4157c5%2F813c1d57-c085-4bf9-bc77-693c7bc4ef7b%2F87hlrcf_processed.jpeg&w=3840&q=75)
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