Question

A syringe containing 1.45 ml of oxygen gas is cooled from 90.4 ∘c to 0.5 ∘c. what is the final volume vf of oxygen gas? (assume that the pressure is constant.)

Answer 1

Charles law gives the relationship between volume and temperature.
It states that at constant pressure, volume of gas is directly proportional to temperature of gas.
V/T = k
where k - constant

`(V1)/(T1) = (V2)/(T2)`
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
temperature should be given in K
T1 - 90.4 °C + 273 = 363.4 K
T2 - 0.5 °C + 273 = 273.5 K
Substituting values in the equation

`(1.45mL)/(363.4 K) = (V)/(273.5K)`
V = 1.09 mL
Final volume is 1.09 mL