
Concept explainers
(a)
Interpretation:
An explanation has to be given for the following observation,
In 2009, U.S Energy secretary Steven Chu suggested that painting roofs white would be one way to combat global warming.
Concept introduction:
Radiant energy emitted by all matter whose temperature is greater than absolute zero
(
Radiant energy with short wavelength (higher frequency) will have the most energy and as the wavelength get longer, the energy decreases.
Global warming is a serious environmental issue, in which there is an increase in the overall temperature of the earth by various factors.
White colour reflects all
(b)
Interpretation:
An explanation has to be given for the following observation,
The idea of “ green roofs” is also attracting attention. Planting gardens in roof tops has benefits in addition to those of white roofs. But such gardens also have limitations.
Concept introduction:
Electromagnetic spectrum is a range of all types of electromagnetic radiation.
Radiant energy emitted by all matter whose temperature is greater than absolute zero
(
Radiant energy with short wavelength (higher frequency) will have the most energy and as the wavelength get longer, the energy decreases.
Light is an energy and heat is another form of energy.
White colour reflects all wavelengths of light while black colour absorbs all wavelengths of light, absorbing energy will turn to heat energy.

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Chapter 4 Solutions
Chemistry In Context
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- Predict the major products of this organic reaction. Be sure you use dash and wedge bonds to show stereochemistry where it's important. + ☑ OH 1. TsCl, py .... 文 P 2. t-BuO K Click and drag to start drawing a structure.arrow_forwardConsider this organic reaction: ( Draw the major products of the reaction in the drawing area below. If there won't be any major products, because this reaction won't happen at a significant rate, check the box under the drawing area instead. Click and drag to start drawing a structure. Х : а ค 1arrow_forwardIn the drawing area below, draw the major products of this organic reaction: If there are no major products, because nothing much will happen to the reactant under these reaction conditions, check the box under the drawing area instead. 1. NaH 2. CH3Br ? Click and drag to start drawing a structure. No reaction. : ☐ Narrow_forward
- + Predict the major product of the following reaction. : ☐ + ☑ ค OH H₂SO4 Click and drag to start drawing a structure.arrow_forwardConsider this organic reaction: ... OH CI Draw the major products of the reaction in the drawing area below. If there won't be any major products, because this reaction won't happen at a significant rate, check the box under the drawing area instead. ☐ No Reaction. Click and drag to start drawing a structure. : аarrow_forwardConsider the following reactants: Br Would elimination take place at a significant rate between these reactants? Note for advanced students: by significant, we mean that the rate of elimination would be greater than the rate of competing substitution reactions. yes O no If you said elimination would take place, draw the major products in the upper drawing area. If you said elimination would take place, also draw the complete mechanism for one of the major products in the lower drawing area. If there is more than one major product, you may draw the mechanism that leads to any of them. Major Products:arrow_forward
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