Calculate the final Temperature (Kelvin) required to change the volume of 100 L of Helium at 256 K to 150 L, assuming the pressure is constant.

T = 384 K

Explanation: For this problem we will use Charles Law for gases. The formula is expressed as the ratio of volume per unit temperature having a constant pressure.

V1 / T1 = V2 / T2 derive to find the new Temperature T2

T2 = V2 T1 / V1

= 150 L ( 256 K ) / 100 L

= 384 K

Cancel out the units of Liters so the remaining unit is in Kelvin.

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.