The flow rate of a hot coal/oil slurry in a pipeline is measured by injecting a small side stream of cool oil and measuring the resulting temperature change downstream in the pipeline. The slurry is...

The flow rate of a hot coal/oil slurry in a pipeline is measured by injecting a small side stream of cool oil and measuring the resulting temperature change downstream in the pipeline. The slurry is initially at 3008F and has a density of 1.2 g/cm3 and a specific heat of 0.7 Btu/(lbm 8F). With no side stream injected, the temperature downstream of the mixing point is 2988F. With a side stream at 608F and a flow rate of 1 lbm/s, the temperature at this point is 2958F. The side stream has a density of 0.8 g/cm3 and a cp of 0.6 Btu/(lbm 8F). What is the mass flow rate of the slurry?