of heat must be added up to the second reservoir to make both reservoirs have the same increase in entropy.
Entropy is the measure of systems thermal energy per unit temperature.
Mathematically,
Entropy =
ΔS =
For reservoir first ,
Q (heat) = 400 J
Temperature = ° C = ° + 273 K
= 243K
Therefore ,
ΔS = J/K
For second reservoir,
Q = ?
Temperature = 0° C + 273°
= 273 K
ΔS =
According to question, Entropy of both the systems are same
Therefore,
= J/K
Q = J
Q = 449.38 J
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Answer:
Volume is the amount of space taken up an object.
Answer:
Explanation:
Given that;
diameter (d) = 10cm/2 = 0.1m/2 = 0.05 m
length (l) = 10 cm = 0.1 m
porosity = 50%
height (h) = 30 cm = 0.3 m
time (t) = 5 s
volume (v) = 60 cm³ = 60 × 10⁻⁶ m³
Q (flow rate) =
Q =
Q =
From constant head method, we use the relation K = to determine the hydraulic conductivity ; we have:
Seepage velocity
where; velocity =
=
=
Answer:
Explanation:
An electron-donating heteroatom substituent at position-2 of a furan promotes regiospecific opening of the 7-oxa bridge of the Diels-Alder cycloadduct with hexafluoro-2-butyne, producing a 4-heterosubstituted 2,3-di(trifluoromethyl)phenol building block in a single step. The phenol and heteroatom substituent are easily transformed to the corresponding iodide or triflate that readily undergoes Heck, Suzuki, and Stille reactions to install a variety of substituents in high yields. This methodology provides a facile and general synthesis of 1,4-disubsituted 2, 3-di(trifluoromethyl)benzenes.
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