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gulaghasi [49]
3 years ago
13

Use the table to answer the questions. What is the fastest time trial for the first quarter checkpoint? What is the slowest time

trial for the first quarter checkpoint? What is the range of times measured for this checkpoint? All answers in seconds
Chemistry
1 answer:
kicyunya [14]3 years ago
8 0

Answer:

25

Explanation:

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An inventor claims to have devised a closed cyclic engine which exchanges heat with cold and hot reservoirs at 25 and 350 ◦C, re
kati45 [8]

Explanation:

The given data is as follows.

T_{c} = 25^{o}C,  T_{h} = 350^{o}C

Work produced per kJ of heat extracted from hot reservoir = 0.45 kJ = Efficiency

If the device is Carnot cycle then its efficiency will be maximum and its value will be equal to [1 - (\frac{T_{c}}{T_{h}} )]

Using this relation we will calculate the efficiency as follows.

                 Efficiency = [1 - (\frac{T_{c}}{T_{h}} )]

                        = 1 - (\frac{25}{350})

                       = 0.928

Hence, it means that this type of device is possible and the claim is also believable.

7 0
3 years ago
Can I have some help please on #2,4,5
zzz [600]
It differs because a steam turbine runs off of a magnetic field and a steam engine runs off of coal 

hope this helps :)




5 0
3 years ago
Chemistry is: a) the mystical search for the elixir of life. b) speculation about the nature of matter. c) the study of matter a
Yuki888 [10]

Answer:

c) the study of matter and the changes it undergoes

Explanation:

Chemistry -

It is the sub topic of science , dealing with the study of matter , the properties of matter , the type of interaction between the particles of matter , the reason for the particle of matter to combine and separate in order to form new substance .

The basic concepts of chemistry are applicable on the day to day activities.

Hence, from the given options , the correct statement is c) the study of matter and the changes it undergoes.

7 0
3 years ago
A chemical reaction happens in three steps.
oee [108]
Steps 1 and 3 are correct rate
7 0
3 years ago
What is the chemical formula for the compound formed between sodium and iodine?
IrinaK [193]
Each compound will be neutral
6 0
3 years ago
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