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The universe has laws that the volume [tex](V)[/tex] of a given mass of an ideal gas varies directly with its absolute temperature [tex](T)[/tex] and inversely with its pressure [tex](P)[/tex].

Given that a certain gas at an absolute temperature of 275 K and pressure of 105 N/m[tex]\(^2\)[/tex] has a volume of 0.225 m[tex]\(^3\)[/tex], find the formula that connects these variables.

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To further clarify the problem, one might typically use the Ideal Gas Law, expressed as:
[tex]\[ PV = nRT \][/tex]
Where:
- [tex]\(P\)[/tex] is the pressure
- [tex]\(V\)[/tex] is the volume
- [tex]\(n\)[/tex] is the number of moles of the gas
- [tex]\(R\)[/tex] is the ideal gas constant
- [tex]\(T\)[/tex] is the absolute temperature


Sagot :

Certainly! Let's work through this problem step-by-step using the Ideal Gas Law. The equation relating volume [tex]\( V \)[/tex], temperature [tex]\( T \)[/tex], and pressure [tex]\( P \)[/tex] for an ideal gas is given by:

[tex]\[ V = k \frac{T}{P} \][/tex]

where [tex]\( k \)[/tex] is a proportionality constant which needs to be determined.

### Given Data:
- Volume [tex]\( V = 0.225 \, \text{m}^2 \)[/tex]
- Temperature [tex]\( T = 275 \, \text{K} \)[/tex]
- Pressure [tex]\( P = 105 \, \text{N/m}^2 \)[/tex]

### Step-by-Step Solution:

1. Substitute the given values into the Ideal Gas Law:
We have [tex]\( V = k \frac{T}{P} \)[/tex].

[tex]\[ 0.225 = k \frac{275}{105} \][/tex]

2. Solve for the constant [tex]\( k \)[/tex]:
Multiply both sides of the equation by [tex]\( \frac{105}{275} \)[/tex]:

[tex]\[ k = 0.225 \times \frac{105}{275} \][/tex]

3. Perform the multiplication:
Calculate the product:

[tex]\[ k \approx 0.225 \times 0.3818 \][/tex]

### Result:
[tex]\[ k \approx 0.0859090909 \][/tex]

So, the proportionality constant [tex]\( k \)[/tex] in the equation [tex]\( V = k \frac{T}{P} \)[/tex] is approximately [tex]\( 0.0859090909 \)[/tex].

### Conclusion:
Given the specified temperature and pressure, the formula for the volume [tex]\( V \)[/tex] in terms of temperature [tex]\( T \)[/tex] and pressure [tex]\( P \)[/tex] is:

[tex]\[ V = 0.0859090909 \frac{T}{P} \][/tex]

This equation describes how the volume changes with varying temperature and pressure for the given ideal gas, based on the constants provided.
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