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Rama09 [41]
4 years ago
8

What are the four protein structures?

Chemistry
1 answer:
daser333 [38]4 years ago
4 0
Hello there.

<span>What are the four protein structures?
</span>
<span>Primary structure 

</span><span>Tertiary structure

</span><span>Quaternary structure

</span>Secondary structure
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Ethylene enters a reversible, isothermal, steady-flow compressor at 1 bar and 280 K, and exits at 40 bar. Find the required comp
antiseptic1488 [7]

Answer:

Required compressor work W=8560.44  KJ/Kmol

Explanation:

Given that

Initial pressure = 1 bar

P_1=1\ bar

Final pressure = 40 bar

P_2=40\ bar

Process is isothermal and T=280 K

We know that ,work done in isothermal process given as

W=P_1V_1\ln \dfrac{P_1}{P_2}

given taht gas is ideal so

P V =m R T

W=mRT\ln \dfrac{P_1}{P_2}

R for ethylene

R=0.296 KJ/kg.K

Now by putting the values

W=mRT\ln \dfrac{P_1}{P_2}

W=1\times 0.296\times 280 \ln \dfrac{1}{40}

W= -305.73 KJ/kg

Negative sign indicates that work done on the system.

Required compressor work W=305.73 KJ/kg

Molar mass of ethylene M= 28 Kg/Kmol

So W= 305.73 x 28  KJ/Kmol

W=8560.44  KJ/Kmol

Required compressor work W=8560.44  KJ/Kmol

5 0
3 years ago
Be sure to answer all parts. consider the combustion of butane gas: c4h10(g) + 13 2 o2(g) → 4co2(g) + 5h2o(g) (a) predict the si
9966 [12]
Answers are:
1) ΔH is negative because that is combustion reaction and heat is released, enthalpy of combustion is -2877.5 kJ/mol.
2) ΔS is positive, because there more molecules on the right side of balanced chemical reaction, standard molar entropy is <span>310.23 J/mol</span>·<span>K.
</span>3) ΔG = ΔH - TΔS.
ΔG = -2877.5 kJ/mol - 298 K · 310.23 J/mol·K.
ΔG = -2969.95 kJ/mol.
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3 years ago
Is dihydrogen monoxide a real substance? Do you think it should be banned?
sladkih [1.3K]
Yes it’s a real substance and yes it should be banned because it kills people without warning.It has no taste,smell,and you can’t see it.
5 0
3 years ago
PLEASE Help I will give u brainliest for if u get right.
solong [7]

Answer:

H

Explanation:

Hydrogen is a nonmetal love:)

3 0
3 years ago
Read 2 more answers
Which one of the following statements is not true?
lana66690 [7]

Answer:

When magma reaches the surface, its dissolved gas content increases is true

<u>Explanation</u>:

The volcanic eruptions happen because of magma that is expelled on the earth’s surface. At the earth’s depth, all magma have gas dissolved in liquid. When the pressure has decreased the magma rises towards the earth’s surface creating a separate vapour phase.  

As pressure reduces the volume of gas will  expands and giving magma its 'explosive character'. Thus, as magma reaches the surface the dissolved gas content decreases and magma comes out of earth’s surface.

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4 years ago
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