(Caleulation of the interfacial concertrations)' In a certain equipment used for the absorption of SO, from air by water, at one section, the gas and liquid phase concentrations of the solute are 10 mole% and 4 mass% respectively. The solution density is 61.8 lblff. At the given temperature (40°C) and pressure (10 atm), the distribution of the SO, between air and water can be approximately described as PA = 25x, where p, is the partial pressure of SO, in the gas phase in atm. The individual mass trnsfer coefficients are k, = 10 kmol(1){m°{&x) and k, = 8 kmol{h)(m°XAy). Calculate the overall coefficient, K, in kmol/th )(m*)(Ap, mm Hg) and x; and p at the gas-liquid interface.

Astudent is given a sample of a blue copper sulfate hydrate. he weighs the sample in a dry covered porcelain crucible and got a mass of 23.875 g for the crucible, lid, and sample. the mass of the empty crucible and lid was found earlier to be 22.652 g. he then heats the crucible to expel the water of hydration, keeping the crucible at red heat for 10 minutes with the lid slightly ajar. on colling, he finds the mass of crucible, lid, and contents to be 23.403 g. the sample was changed in the process to very light clue anhydrous cuso4. if there are again 100.0 g of hydrate, how many grams of cuso4 are in it? how many moles of cuso4? (hint: molar mass of cuso4 = 159.6 g / mole. what per cent of the hydrate is cuso4? you may convert the mass of cuso4 to moles.)

Asolubility table shows that almost all compounds of group 1 metals are soluble in water. this general rule tells you that mgi2 is soluble rbno3 is soluble cacl2 is soluble co2 is soluble

Why must pencil be used to draw on paper in paper chromatography