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Lapatulllka [165]
3 years ago
11

Calculate the ΔG for the following system. Then state if the system is spontaneous or not spontaneous. ΔH = 147 kJ ΔS = -67.0 J/

K T = 149 °C
Chemistry
1 answer:
lbvjy [14]3 years ago
5 0

Answer:

ΔG for the given system is 28.421 kJ. The system is non spontaneous.

Explanation:

ΔH = 147 kJ =147,000 J= Enthalpy of the system

ΔS = -67.0 J/K = Entropy change

T = 149 °C = 422.15 K = Temperature of the system

((T)°C=273.15 +T K)

ΔG = Gibbs free energy ?

The Gibbs free energy 's expression is given by:

ΔG = ΔH  - T ΔS

  • ΔG > 0 , non spontaneous
  • ΔG < 0, spontaneous

\Delta G^o=147,000 J-422.15 K\times (-67.0)

ΔG = 28,421 J = 28.421 kJ

Since, value of Gibbs free energy is positive this means that reaction is non spontaneous.

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Chemical property:

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Physical property:

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7 0
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suter [353]

Answer:

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Explanation:

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4 0
2 years ago
A condor has a wing span of 3.05 m. What is the wing span in feet
romanna [79]

Answer:

The condor has a wing span of 10 feet

Explanation:

This can be solved by a simple rule of three

In a rule of three problem, the first step is identifying the measures and how they are related, if their relationship is direct of inverse.

When the relationship between the measures is direct, as the value of one measure increases, the value of the other measure is going to increase too. In this case, the rule of three is a cross multiplication.

When the relationship between the measures is inverse, as the value of one measure increases, the value of the other measure will decrease. In this case, the rule of three is a line multiplication.

In this problem, our measures are the wing span of the condon in meters and the wing span of the condor is feet. As the value of one of these measures increases, the other is going to increase too.

We know that 1m has 3.281 feet,

So we have the following rule of three:

1m - 3.281 feet

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x = 3.821*3.05

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3 0
3 years ago
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ivanzaharov [21]
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4 0
3 years ago
William adds two values , following the rules for using significant figures in computations. He should write the sum of these tw
yuradex [85]

Answer:

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So when adding these 2 values the final answer should have only one decimal place.

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the answer is the same number of decimal places as the least precise value

Explanation:

I think this is the answer I'm not sure

7 0
2 years ago
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