(a) The calcium, magnesium, and iron hardness expressed as meq/L and as mg/L equivalent CaCO3. (b) The total hardness as meq/L and as mg/L equivalent CaCO3. (c) The alkalinity as meq/L and as mg/L equivalent CaCO3. (d) The nitrate as mg/L nitrogen (N). (e) The hydrogen and hydroxyl ion concentration in moles/L

Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.

The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false

Afull journal bearing has a journal diameter of 27 mm, with a unilateral tolerance of -0.028 mm. the bushing bore has a diameter of 27.028 mm and a unilateral tolerance of 0.04 mm. the l/d ratio is 0.5. the load is 1.3 kn and the journal runs at 1200 rev/min. if the average viscosity is 50 mpa-s, find the minimum film thickness, the power loss, and the side flow for the minimum clearance assembly.