
Concept explainers
Interpretation: The effect of greenhouse should be determined.
Concept Introduction:
Greenhouse effect: The heat near the earth surface gets trapped by the gases present in the earth atmosphere. The carbon dioxide is the primary gas that traps more heat.
Atmosphere: The atmosphere is defined as air that is layer of gases which surrounds the earth due to gravity of earth.
The earth atmosphere consists of layers such as thermosphere, mesosphere, stratosphere and troposphere depending on the temperature and its composition.
Dipole moment: It is the measure that describes the separation and the magnitude of charges in polar (a material is considered as polar if it has charge separation) molecule.
Aerobic respiration: It is one type of respiration in which the organisms undergoes respiration only in presence of oxygen.
Greenhouse effect: The heat near the earth surface gets trapped by the gases present in the earth atmosphere.
Conditions that greenhouse gas should fulfil is as follows,
The gas is considered as greenhouse gas if it possesses dipole moment or the vibrational motions of the gases should create some temporary dipole moment.
Aurora : The sudden violent eruptions arises in sun surface gives rise to large amount of electrons and protons and these particles cause the disturbance of radio transmission that is they collide with the molecules present in the atmosphere which gets excited and then reaches its ground state with emission of photons in the visible range called aurora.
Aurora borealis: They are celestial lights found in northern hemisphere.
Aurora Australis: They are same as aurora borealis but found in southern hemisphere.
Visible Range: The

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Chapter 21 Solutions
Chemistry: Atoms First
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- Use the reaction coordinate diagram to answer the below questions. Type your answers into the answer box for each question. (Watch your spelling) Energy A B C D Reaction coordinate E A) Is the reaction step going from D to F endothermic or exothermic? A F G B) Does point D represent a reactant, product, intermediate or transition state? A/ C) Which step (step 1 or step 2) is the rate determining step? Aarrow_forward1. Using radii from Resource section 1 (p.901) and Born-Lande equation, calculate the lattice energy for PbS, which crystallizes in the NaCl structure. Then, use the Born-Haber cycle to obtain the value of lattice energy for PbS. You will need the following data following data: AH Pb(g) = 196 kJ/mol; AHƒ PbS = −98 kJ/mol; electron affinities for S(g)→S¯(g) is -201 kJ/mol; S¯(g) (g) is 640kJ/mol. Ionization energies for Pb are listed in Resource section 2, p.903. Remember that enthalpies of formation are calculated beginning with the elements in their standard states (S8 for sulfur). The formation of S2, AHF: S2 (g) = 535 kJ/mol. Compare the two values, and explain the difference. (8 points)arrow_forwardIn the answer box, type the number of maximum stereoisomers possible for the following compound. A H H COH OH = H C Br H.C OH CHarrow_forward
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