16: Which of the foll B) 4s C) 3p D) M A) 4p 17:A compound contains 0.480 g C, 0.161 g H, 1.121 g N and 0.640 g 0 The compirical Reals C. CHINO B. C₂H₂NO₂ ACHNO DORNO 18 conting to VSEPR, the bond angle in Xef, is D) 108
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.
![15: Which of the elements listed below has the highest first ionization energy
C) Ar
B) Ne
A) He
Di Ki
16: Which of the following orbitals has the highest energy?
A) 4p
B) 4s
C) 3p
D) 34
17:A compound contains 0.480 g C, 0.161 g H, 1.121 g N and 0.640 g 0 The empirical Remulia?
ACHNO
B. C₂H₂NO₂
C.CHNO
DORNO
18:According to VSEPR, the bond angle in Xef, is
B) 120
A) 90°
19: The Lewis structure for CS₂ is:
--
B) :S-C-S:
C) 180
20: Element
Re has in its nucleus
A. 75 protons, 75 neutrons and 75 electrons
C. 130 protons, 75 neutrons and 75 electrons
21: Which What is the valence shell electron configuration of the halogens
A) ns'np
B) na
22: The number of pi bonds in the molecule below is H-CC-C»N
B) Ne
B. 75 protons, 130 euros and 75 oom
D. 75 protons, 110 neutrons and 75 ek
D)
D) 10
CL L
LLL
D.NN NIL
25:The VSEPR model can be used to predict
C) molecular geometry
A) electronegativity
B) bond order
26: Indicate the type of hybrid orbitals used by the central atom in St
C) sp
D) sp'd
B) sp
A) SP
Now of Them
A) 1
B) 2
C) 3
HRD) S
19
23: What volume of 10.0 M HC1 is needed to make 2.00 L of 2.00 M HCT solution by dilution with wa
A) 0.800 L
B) 0.400 L
C) 0.200 L
D) 0,1001
24: The orbital diagram for a ground-state nitrogen atom is
1s
AL
6'd
D) Beth Band C are comet
He
LAME](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F275d9c3d-be23-4b11-888d-a363c5c20a37%2Fe0e50d45-6021-4ee0-bdc4-2df97c901e79%2Fssyjmen_processed.jpeg&w=3840&q=75)
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We have to tell which option is correct from Given choices of option by telling empirical formula of a compound with elements Given
Elements | Mass (g) |
C |
0.480 |
H | 0.161 |
N | 1.121 |
O | 0.640 |
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