multible choise questions Water has the following unique combination of qualitie
ID: 1010640 • Letter: M
Question
multible choise questions
Water has the following unique combination of qualities:
A) H2o molecules form hydrogen bonds with each other. They are cohesive.
B) H20 molecules like to bond with ions or other charged molecules. They are adhesive.
C) Water has a high specific heat.
D) Water has a high heat of vaporization.
E) Water’s greatest density is at 4°C. Above or below that temperature it becomes less dense.
F) Water has a low viscosity. Read the following scenario and determine which of the previous properties is BEST illustrated. In chemistry class, you pour water into a graduated cylinder. You carefully take note of the meniscus that formed at the top. which one is the correct answer a,b,c,d,e,f
2) same question but with this scenario An Arctic blast comes through Lexington. The next day, the plumbers are busy as pipes burst all over town. what is the right answer for this a,b,c,d,e,f please help, thanks
Explanation / Answer
1) Ans: A
The meniscus formed is the graduated cylinder can be attributed to the cohesive nature of water molecules which arises due to the strong intermolecular hydrogen bonds. The polar nature makes the water molecules stick together. Since glass molecules are also polar, water molecules tend to stick to the sides of the glass cylinder and form a meniscus.
2) Ans: E
The reason for the pipes to burst can be attributed to the decrease in density of water as it is cooled below 4C where it has the maximum density. As water is cooled below 4C to form ice it undergoes a negative thermal expansion which causes the pipes to burst during severe winters.
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