A meat product with a temperature of 278 K and an initial moisture concentration of 0.1 kgmol/m3 was cut into uniform shapes with a diameter of 30 mm and a length of 40 mm and dried using hot-dry air. The diffusivity coefficient is given as 4.72x10-10 m2/s. Calculate the moisture concentration in the center of the meat product after 100 hours of drying (assuming kc is infinity).

Ascientist measures the speed of sound in a monatomic gas to be 449 m/s at 20∘c. what is the molar mass of this gas?

If 15 drops of ethanol from a medical dropper weight 0.60g, how many drops does it takes from a dropper to dispense 1.0ml of ethanol? the density of ethanol is 0.80g/ml

)benzene and toluene form nearly ideal solutions. consider an equimolar solution of benzene and toluene. at 20 °c the vapour pressures of pure benzene and toluene are 9.9 kpa and 2.9 kpa, respectively. the solution is boiled by reducing the external pressure below the vapour pressure. calculate (i) the pressure when boiling begins, (ii) the composition of each component in the vapour, and (iii) the vapour pressure when only a few drops of liquid remain. assume that the rate of vaporization is low enough for the temperature to remain constant at 20 °c.