
Concept explainers
Interpretation: The difference between the frequency and the speed of a wave is to be explained.
Concept Introduction:The frequency of a wave is the number of waves in unit time while the speed of a wave is the distance covered by a wave in unit time.

Answer to Problem 4RQ
Wave frequency is a fundamental characteristic of a wave but wave speed is not a fundamental characteristic and depends upon the point of consideration. The unit of wave frequency is s-1 while the wave speed unit is ms-1.
Explanation of Solution
The difference between the wave frequency occurs due to the different points of observation. In wave speed, the distance travelled by a point of the wave is calculated while in wave frequency, the number of waves passing through a particular point are observed.
Chapter 11 Solutions
World of Chemistry
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- For each scenario below, select the color of the solution using the indicator thymol blue during the titration. When you first add indicator to your Na2CO3solution, the solution is basic (pH ~10), and the color is ["", "", "", "", ""] . At the equivalence point for the titration, the moles of added HCl are equal to the moles of Na2CO3. One drop (or less!) past this is called the endpoint. The added HCl begins to titrate the thymol blue indicator itself. At the endpoint, the indicator color is ["", "", "", "", ""] . When you weren't paying attention and added too much HCl (~12 mL extra), the color is ["", "", "", "", ""] . When you really weren't paying attention and reached the second equivalence point of Na2CO3, the color isarrow_forwardTo convert cyclopentane-CH2-CHO to cyclopentane-CH2-CH3, compound A is added, followed by (CH3)3CO-K+, DMS at 100oC. Indicate which compound A is.arrow_forwardIndicate how to obtain the compound 2-Hydroxy-2-phenylacetonitrile from phenylmethanol.arrow_forward
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