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BaLLatris [955]
3 years ago
10

How do lipids differ from carbohydrates? they are formed from different basic elements

Chemistry
1 answer:
grin007 [14]3 years ago
5 0
Lipids are insoluble in water and they produce twice as more energy as carbohydrates.
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1 mol super cooled liquid water transformed to solid ice at -10 oC under 1 atm pressure.
Arada [10]

Answer:

Explanation:

Given that:

number of moles of super cooled liquid water = 1

Melting enthalpy of ice = 6020 J/mol

Freezing point =0 °C = (0 + 273 K)= 273 K

The decrease in entropy of the system during freezing for 1 mol (i.e during transformation from liquid water to solid ice )  = - 6020 J/mol × 1 mol /273 K = -22.051 J/K

Entropy change during further cooling from 0 °C (273 K) to -10 °C (263 K)

\Delta \ S = \int\limits^{T_2}_{T_1}\dfrac{nC_p(s)dT}{T}

\Delta \ S = {nC_p(s)In \dfrac{T_2}{T_1}

\Delta \ S = {(1*37.7)In \dfrac{263}{273}

Δ S = -1.4 J/K

Total entropy change of the system = - 22.05 J/K - 1.4 J/K = - 23.45 J/K

Entropy change of universe = entropy change of the system+ entropy change of the surrounding

According to the second law of thermodynamics

Entropy change of universe  >0

SO,

Entropy change of the system + entropy change in the surrounding > 0

Entropy change in the surrounding > - entropy change of the system

Entropy change in the surrounding > - (- 23.53 J/K)

Entropy change in the surrounding > 23.53 J/K

b) Make some comments on entropy changes from the obtained data.

From the data obtained; we will realize that the entropy of the system decreases as cooling takes place when water is be convert to ice , randomness of these molecules reduces and as cooling proceeds , hence, entropy reduces more as well and the liberated heat will go into the surrounding due to this entropy of the surrounding increasing.

4 0
3 years ago
Please help I don't understand this question
Misha Larkins [42]

Answer:

The answer will be C. Variable

Explanation:

The answer will be C because A response is a reactant for the plant and the question is asking about the light. B is incorrect because stimulus is how a plant reacts to nature for example gravitrophism and  thingatropism also its asking about the light not the plant. D is incorrect because... come on now does it even make sense XD

Hope this helps

8 0
3 years ago
Read 2 more answers
2
timofeeve [1]

Answer:

B. The Shell

Explanation:

The shell covers and surrounds whats inside. It protects it!

4 0
3 years ago
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How is the earth’s groundwater and surface water replenished
elixir [45]
The water cycle?  hope this helped 
3 0
3 years ago
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The reactant side of a balanced chemical equation is shown below.
Sloan [31]

Answer:

2

Explanation:

In the equation, Cl is chlorine and there is a number "2" so that the correct answer is 2.

6 0
3 years ago
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