| Composition of a Mixed Stream | Chemical | Material Balances | easy |
| Product Flow from a Two-Outlet Separator | Chemical | Material Balances | medium |
| Stoichiometric Air-Fuel Ratio for Methane | Chemical | Combustion | medium |
| Duty for Sensible Heating of Water | Chemical | Energy Balances | easy |
| Density of an Ideal Gas | Chemical | Thermodynamics | easy |
| Vapour Composition over an Ideal Binary Liquid | Chemical | Thermodynamics / VLE | medium |
| Enthalpy of Wet Steam | Chemical | Thermodynamics | medium |
| Temperature of Two Mixed Streams | Chemical | Energy Balances | easy |
| Maximum Ammonia from a Non-Stoichiometric Feed | Chemical | Stoichiometry | medium |
| Degrees of Freedom for a Binary Two-Phase System | Chemical | Thermodynamics | easy |
| CSTR Volume for a First-Order Reaction | Chemical | Reaction Engineering | medium |
| PFR Volume for the Same Duty | Chemical | Reaction Engineering | medium |
| Activation Energy from Two Rate Constants | Chemical | Reaction Engineering | hard |
| Batch Time for a First-Order Reaction | Chemical | Reaction Engineering | medium |
| Reynolds Number for a Viscous Liquid | Chemical | Fluid Flow | easy |
| Steady Diffusion Rate Through a Film | Chemical | Mass Transfer | easy |
| Required Heat Exchanger Area | Chemical | Heat Transfer | easy |
| Minimum Stages by the Fenske Equation | Chemical | Separations | hard |
| Vapour Pressure from the Antoine Equation | Chemical | Thermodynamics / VLE | medium |
| Settling Time of a First-Order Process | Chemical | Process Control | medium |