If the Kelvin temperature of 2 L of a gas at STP doubles, the new volume would be

double, assuming pressure was unchanged.

To find the new volume when the Kelvin temperature of a gas at STP doubles, we can use the combined gas law formula. The combined gas law relates the initial and final conditions of pressure, volume, and temperature. However, since we are dealing with STP (Standard Temperature and Pressure), we can simplify the calculations.

At STP, the temperature is 273.15 Kelvin (0 degrees Celsius) and the pressure is 1 atmosphere (atm). Let's assume the initial volume is 2 L.

To calculate the new volume when the Kelvin temperature doubles, we can use the following steps:

Step 1: Convert the initial temperature to Kelvin
Initial temperature = 273.15 K (STP)

Step 2: Double the Kelvin temperature
New temperature = 2 * Initial temperature = 2 * 273.15 K = 546.3 K

Step 3: Use the combined gas law to find the new volume
(Volume1 / Temperature1) = (Volume2 / Temperature2)
(2 L / 273.15 K) = (Volume2 / 546.3 K)

Step 4: Solve for Volume2 (new volume)
Volume2 = (2 L / 273.15 K) * 546.3 K
Volume2 = 4 L

Therefore, if the Kelvin temperature of 2 L of a gas at STP doubles, the new volume would be 4 L.

To determine the new volume when the Kelvin temperature of a gas at STP doubles, we need to use Charles's Law, which states that the volume of a gas is directly proportional to its Kelvin temperature, assuming constant pressure and amount of gas.

Charles's Law can be expressed as:

V₁ / T₁ = V₂ / T₂

Where:
V₁ is the initial volume
T₁ is the initial Kelvin temperature
V₂ is the unknown new volume
T₂ is the new Kelvin temperature

At STP (Standard Temperature and Pressure), the temperature is 273.15 K and the volume is 2 L. Let's assume the new Kelvin temperature is 2T₁ (twice the initial temperature):

V₁ / 273.15 K = V₂ / (2T₁)

Simplifying further, we have:

V₁ = 2V₂ / 273.15 K

Now we can solve for V₂ by rearranging the equation:

V₂ = (V₁ * 273.15 K) / 2

Substituting the given initial volume of 2 L into the equation:

V₂ = (2 L * 273.15 K) / 2

V₂ = 273.15 L

Therefore, if the Kelvin temperature of 2 L of a gas at STP doubles, the new volume would be 273.15 L.