The toxicity of DDT (C14H9Cl5) led to a ban on its use in the United States in 1972. Determinations of DDT concentrations in groundwater samples from Pennsylvania between 1969 and 1971 yielded the following results: tion Mass of DDT 0.0290 mg 0.0340 mg 0.600 mg ample Size 48 mL Orchard Residential Residential after a storm 1.79 L 9.0 mL
Express these concentrations in millimoles per liter
1st attempt
Part 1 (1 point)
Orchard mmol/L
Part 2 (1 point)
Residential mmolVL
Part 3 (1 point)
Residential after a storm mmol/L

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.

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.

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