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cricket20 [7]
3 years ago
5

A stream of methane gas at 25 bar and 100°C flows into a container that contains methane gas initially at 1 bar and 100°C until

the pressure in the container reaches 25 bar. If the volume of the container is 200 L, calculate the final temperature of the gas in the tank. Assume methane is an ideal gas with constant Cp
Chemistry
1 answer:
Dafna11 [192]3 years ago
6 0

Since Methane is assumed an ideal gas, we need to know its moles in each streams.

Therefore, we can use the ideal gas law to find the mole in the container by:  

P V=nRT         ⇒     n=PV/R T

n=no of moles of the gas = mass/molar mass

Molar mass o f CO2=44g/mol, mass = 44g

P= 25bar = 101000X25Pa=2.5x106Pa

V = 20L = 20dm3 = 0.02m3

T=100C=373K

R=8.314J/mol.K

n1= 2.5x106Pa x 0.02m3 / 8.314J/mol.K x 373K

n1 = 16.1mols

Similarly for stream 2, we have n2 which is

P=1bar = 100000Pa

T= 100C= 373K

V=200L = 0.02m3

n2= 1x105Pa x 0.02m3 / 8.314J/mol.K x 373K

n1 = 0.645mol

So the new stream is an addition of these two streams of methane which has

n3 = n1 + n2 =16.75mols of methane

T=?

V=200L=0.02m3

P = 25Bar = 2.5x106Pa

T= PV/nR

T = 2.5x106Pa x 0.02m3 / 16.75 x 8.314

T=359K

So the final temperature of the gas in the tank is 359K

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1 point
Bumek [7]

Answer:

1 mole of C2H6.

Explanation:

The balanced equation for the reaction is given below:

2C2H6 + 7O2 —> 4CO2 + 6H2O

We can determine the number of mole of C2H6 that reacted to produce 2 moles of CO2 as follow:

From the balanced equation above,

2 moles of C2H6 reacted to produce 4 moles of CO2.

Therefore, Xmol of C2H6 will react to produce 2 moles of CO2 i.e

Xmol of CO2 = (2 x 2)/4

Xmol of CO2 = 1 mole.

Therefore, 1 mole of C2H6 is required to produce 2 moles of CO2.

6 0
3 years ago
draw the organic product formed when 1−hexyne is treated with h2o, h2so4, and hgso4. click the draw structure button to launch t
V125BC [204]

The organic product formed when 1−hexyne is treated with H₂O, H₂SO₄, and HgSO₄ will be 2-hexanone (structure attached).

This reaction is an example of an oxymercuration reaction of the organic product 1−hexyne.

Oxymercuration is shown in three steps to the right. The nucleophilic double bond attacks the mercury ion, releasing an acetoxy group. The mercury ion's electron pair attacks carbon on the double bond, generating a positive-charged mercuronium ion. Mercury's dxz and 6s orbitals give electrons to the double bond's lowest unoccupied molecular orbitals.

In the second stage, the nucleophilic H₂O attacks the highly modified carbon, freeing its mercury-bonding electrons. Electrons neutralize mercury ions by collapsing. Water molecules have positive-charged oxygen.

In the third stage, the negatively charged acetoxy ion released in the first step attacks the hydrogen of the water group, generating the waste product HOAc. The two electrons in the oxygen-hydrogen link collapse into oxygen, neutralizing its charge and forming alcohol.

You can also learn about organic products from the following question:

brainly.com/question/13513481

#SPJ4

4 0
1 year ago
How to calculate delta S surroundings? calculate Delta S(surr) at the indicated temperature for a reaction having each of the fo
astraxan [27]
You can use the equation ΔS(surr)=q(surr)/T or ΔS(surr)=-q(rxn)/T.
the two equations are equal since we know that the energy the system (reactoin) puts out just goes into the surroundings.  
(In other words q(surr)=-q(rxn))

Using the equation, <span>ΔS(surr)=-(-283kJ/298K)=0.9497kJ/K or 949.7J/K

This answer makes sense since the reaction is exothermic which means it released energy into the system which usually causes the entropy to increase.

I hope that helps.</span>
8 0
3 years ago
Which is an example of an instinct?
kompoz [17]

Answer:

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5 0
2 years ago
What is the sequence of energy transformations that occur in a nuclear reactor?
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B. nuclear to thermal to mechanical to electrical
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