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lana [24]
3 years ago
15

When a system is at equilibrium________.

Chemistry
1 answer:
ikadub [295]3 years ago
5 0

Answer:

The forward and the reverse processes are both spontaneous. (Ans. B)

Explanation:

When a system is at equilibrium state, then the rate of backwards, and forward, both reactions becomes equal. Which means the forward and the reverse processes are both spontaneous.

With the help of entropy change of the reaction, and Gibbs free energy we can determine the spontaneity of a reaction. If entropy changes is positive, and Gibbs free energy changes a negative, then the reaction will say to be spontaneous.

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Which has triple Bond C2 H4 C3 H6 and C3 H4​
expeople1 [14]

Answer:  C3H4 (Propayne) have a triple bond.

Explanation:

The hydrocarbons which having triple bond are called alkyne. The general formula of alkyne is CnH2n-2. Here, n is number of carbon atoms.

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7 0
3 years ago
1.What percent of light passes through the sample if its absorbance A=2?
Dennis_Churaev [7]

1. The formula for absorbance is given as:

A = log (Io / I)

where A is absorbance, Io is initial intensity, and I is final light intensity

 

log (Io / I) = A

log (Io / I) = 2

Io / I = 100

 

Taking the reverse which is I / Io:

 

I / Io = 1 / 100

I / Io = 0.01

 

Therefore this means that only 0.01 fraction of light or 1% passes through the sample.

 

2. What is meant by transmittance values is actually the value of I / Io. So calculating for A:

 

at 10% transmittance = 0.10

A = log (Io / I)

A = log (1 / 0.10)

A = 1

 

at 90% transmittance = 0.90

A = log (Io / I)

A = log (1 / 0.90)

A = 0.046

 

So the absorbance should be from 0.046 to 1

 

3. at 10% transmittance = 0.10

A = log (Io / I)

A = log (1 / 0.10)

<span>A = 1</span>

3 0
3 years ago
Determine the empirical formula of an oxide of iron, which has 69.9% iron and 30.1% dioxygen by mass.​
Zina [86]

Answer:

again same questions

i think its from 1st chapter

4 0
3 years ago
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