Molality is defined as the number of gm moles of solute per ________ of solvent?

Permanent hardness of water can be removed by________?

Penetration model (theory) for mass transfer was enunciated by ________?

In the downcomer of a distillation column, the minimum recommended residence time is about ________ seconds?

Graphite is a/an________?

Choose the condition that must be specified in order to liquify CO2 (triple point for CO2 is – 57°C and 5.2 atm)?