Molar Volume of a Gas Cube

thingiverse

This is a set of connectors that can be used together with plastic straws to make a cube. We use them to make a very specific cube - one with a volume of 22,7 liters, which is the volume of one mole of any gas, at 0 degrees Celsius and the pressure of 100.000 Pascal (Standard Pressure and Temperature). The idea is to make a prop that may help students to visualize what is the molar volume, how big is 22,7 liters. I printed the parts in PLA with 0.2 mm layer height, 20 % infill. The connectors are for straws with an internal diameter of 4.4 mm.