The temperature of water in a container was 60 degrees Celsius. Ten minutes later, the water temperature was 35 degrees Celsius. What was the rate of cooling of the water?
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Final answer:
The rate of cooling of the water is 2.5°C per minute, calculated by using the difference in temperature over the time interval and assuming a linear rate of cooling.
Explanation:
The rate of cooling of water is the change in temperature over time. If the temperature of water drops from 60 degrees Celsius to 35 degrees Celsius in ten minutes, we can calculate the rate by subtracting the final temperature from the initial temperature and then dividing by the time elapsed. The formula for the rate of cooling is:
Rate of cooling = (Initial Temperature - Final Temperature) / Time
In this case:
Rate of cooling = (60°C - 35°C)/10 minutes = 2.5°C per minute
This calculation assumes that the cooling process follows a linear rate, which might not be the case in real-world scenarios as the rate can change over time due to various factors such as the properties of the container, the environment, and the volume of water.
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Answer:
Second
Explanation:
i took the test
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b. larger urban heat islands
c. poor public health
d. a greater support capacity
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A lack of sewage structures in overcrowded cities may lead to poor public health. Therefore, the correct option is C.
A sewage system, also known as a wastewater management system, is a system of pipes, pumping stations, and other accessories used to transport sewage from points of origin to points of treatment and disposal.
Combination sewers are systems that transport sewage from both domestic and storm sources. Due of the significant amounts of storm water that must be transported during wet weather conditions, combined sewers usually are made up of big pipes or tunnels. Public health may suffer in densely populated cities with inadequate sewage systems.
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b. 4
c. 8
d. 16
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There are eight hydrogen atoms in the following molecule of ammonium sulfide. Thus, the correct option for this question is C.
What is a Molecule?
A molecule may be defined as a cluster of atoms that are significantly bonded together in order to represent the smallest basic unit of a chemical compound that can involve in a chemical reaction.
According to this question, the correct representation of ammonium sulfide is , where the number of the hydrogen atoms is equal to 4 × 2 = 8. Apart from this, the number of nitrogen atoms is 2. While the number of sulfur atoms is only 1.
Therefore, there are eight hydrogen atoms in the following molecule of ammonium sulfide. Thus, the correct option for this question is C.
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coal
B.
water
C.
sunlight
D.
wind