What changes could be made to optimize the manufacturing process

Which compound contain an iron with a 3+ charge

Which description best characterizes the motion of particles in a solid?

In order for a high temperature boiler or steam engine to produce superheated water, or steam: the heat source must be greater than 100°c the water must be permitted to evaporate quickly the system must be sealed and become pressurized above atmospheric pressure the vapor pressure must be kept below 760 mm(hg)