If 10 mg of Rifampicin (K octanol/water of 19.0) is added into a system of 50 mL water and 50 mL of octanol , what is the percentage of the drug that would be found dissolved in the octanol phase *

Agas mixture with a total pressure of 745 mmhg contains each of the following gases at the indicated partial pressures: co2, 245 mmhg ; ar, 119 mmhg ; and o2, 163 mmhg . the mixture also contains helium gas. part a what is the partial pressure of the helium gas? phe p h e = nothing mmhg request answer part b what mass of helium gas is present in a 10.2-l sample of this mixture at 283 k ? m m = nothing g request answer

There are main groups in the modern periodic table of elements

Which position represents spring in the southern hemisphere? a) b) c) d)