Answer:
The amount of entropy produced by the quenching process is 0.303 kJ/K.
Explanation:
Given that,
Mass = 2.5 kg
Temperature = 800°C
The mass of 50 L of water is 50 kg
Temperature = 20°C
Energy = 4.18 kJ/kg.K
If the final temperature of the metal bar and water is T₀°C, then
The heat lost by the bar = heat gained by water
Put the value into the formula
Now, heat exchange between the systems
We need to calculate the entropy
Using formula of entropy
Where, T' = 273.15\ K
Put the value into the formula
Hence, The amount of entropy produced by the quenching process is 0.303 kJ/K.
Can I please get the choices? I would love to answer this question, but 'I have no choices.
A material that is malleable and conducts electricity is
most likely is a metal. The answer is letter C.
The physical property that makes wax good for making
sculpture molds is the melting point. The answer is letter D.
Filtration can be used to separate mixtures based on the
size of their particles. The answer is letter D.
Answer:
Indirect
Explanation:
because jffhfdbkfdblfdnlf
Answer:
Explanation:
In an experimental research, the control group is the group that serves as the neutral group that is not given any form of treatment and serves as the group in which the experimental groups are firstly compared to. Thus, <u>the control group in the question described is the Third group</u>.
While experimental groups are the groups that receive treatments required to make an inference from the experiment. From this description, <u>it can be deduced that the First and the Second group are the experimental groups.</u>
