The particles of a gas exert a pressure on the walls of a container - Edexcel - GCSE Physics - Question 4 - 2019 - Paper 1

To convert Celsius to Kelvin, we use the formula:

$K = °C + 273.15$

So, the temperature in Kelvin is:

$K = 23 + 273.15 = 296.15$

Thus, the value is approximately 296 K.

The anomalous result can be identified at the data point for 12 ml and 200 kPa, which deviates from the trend.

The curve of best fit should touch as many points as possible without passing through the anomalous point, demonstrating the negative correlation between volume and pressure.

If the experiment were repeated with the same mass of gas at a higher temperature, the graph would shift upwards. Specifically, for the same volume, the pressure would be higher, leading to all points on the graph moving to a higher pressure value while maintaining a similar shape.

Using the equation, we have:

$P₁V₁ = P₂V₂$ Substituting the known values:

$8.00 ext{ MPa} imes 14.5 ext{ cm}³ = P₂ imes 1160 ext{ cm}³$

Solving for P₂:

P₂ = rac{8.00 imes 14.5}{1160}

Calculating gives us:

$P₂ ext{ ≈ 0.1 MPa}$

Thus, the pressure in the large balloon is approximately 0.1 MPa.