Lab needs to prepare 7 l white liquor with 91 g/l ea and 31% sulfidity. there is 1.5 l weak white liquor in the container already, and it has 20 g/l na2s and 40 g/l naoh (all expressed as na2o).
1. if you have 100% pure naoh and 55% pure na2s solids, how many g naoh, how many g na2s, and how many ml water will you add into the container to make the requested white liquor?

Ahouse has the following electrical appliance usage (1) single 40w lamp used for 4 hours per day (2) single 60w fan used for 12 hours per day (3) single 200w refrigerator that runs 24 hours per day with compressor run 12 hours and off 12 hours find the solar power inverter size in watt with correction factor of 1.25.

Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.

Inadequate stores control is not an obstacle to effective work order system. (clo4) a)-true b)-false