Answer:
What single percentage change is equivalent to a 11% increase followed by a 15% increase?
Explanation:
What single percentage change is equivalent to a 11% increase followed by a 15% increase?
Answer:
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Explanation:
<h2>Problem 1. </h2>
<u>a) Data:</u>
- n₁ = 0.126 mol
- V₁ = 2.74 L
- n₂ = 0.126mol + 0.124mol
- V₂ = ?
- Conditions: constant temperature and pressure
<u>b) Physical principles:</u>
The volume occupied by a gas, when the temperature and pressure remain unchanged, is proportional to the number of moles of gas.

<u>c) Solution:</u>
Solve for V₂ , substitute and compute:

<h2>Problem 2.</h2>
<u>a) Data:</u>
- n₁ = 0.547mol
- V₁ = 295 mL
- V₂ = ?
- n₂ = 0.547mol + 0.342 mol
- Conditions: constant temperature and pressure
<u>b) Physical principles:</u>
The same as above: the volume occupied by a gas, when the temperature and pressure remain unchanged, is proportional to the number of moles of gas.

<u>c) Solution:</u>
Solve for V₂ , substitute and compute:

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

ΔG = 28,421 J = 28.421 kJ
Since, value of Gibbs free energy is positive this means that reaction is non spontaneous.
<span>It changes with new evidence.
The example shows that science changes with new evidence. Science can not change with common beliefs because first of all beliefs should be proved and become evidence. Second, science is not fixed because of the scientific method and experimentation, which is a phase of the scientific method.
</span>
<span>A supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.</span>