Charles law gives the relationship between temperature and volume of gases. It states that the volume of gas is directly proportional to temperature at constant pressure.
V / T = k
where V - volume and T - temperature in Kelvin and k - constant
[tex] \frac{V1}{T1} = \frac{V2}{T2} [/tex]
where parameters for the first instance are on the left side and parameters for the second instance are on the right side of the equation
T1 - 20 °C + 273 = 293 K
substituting these values in the equation
[tex] \frac{40.0 mL}{293 K} = \frac{80.0 mL}{T} [/tex]
T = 586 K
temperature in celsius = 586 K - 273 = 313 °C
new temperature is 313 °C
