Equilibrium osmotic pressure heads h measured at 22°C for a series of solution of a polystyrene sample in toluene are tabulated below: Polystyrene concentration, g/dm3 2.6 5.2 8.7 11.8 15.1 h, mm toluene 5.85 12.93 24.37 36.34 50.99 Assuming that the densities of the toluene and polystyrene are 0.867 g/cm3 and 1.05 g/cm3 , calculate the following: (a) The number average molar mass for the sample of polystyrene (b) An estimate of the Flory-Huggins polystyrene-toluene interaction parameter

What are the three major branches of natural science? • earth and space science, life science, physical science •earth and space science, physical science, chemistry •physical science, life science, chemistry •life science, chemistry, physics

An observation that requires measurement is called quantitative observable or qualitative

Someone offer some answers to this, i will give 98 coins and mark as brainliest! i will put the rest of the lab down in the comments, solutions pre-lab questions: in this lab, you will make fruit drinks with powdered drink mix. complete the pre-lab questions to get the values you need for your drink solutions. calculate the molar mass of powered fruit drink mix, made from sucrose (c12h22o11).using stoichiometry, determine the mass of powdered drink mix needed to make a 1.0 m solution of 100 ml. (hint: use molarity = to find the moles of drink mix, then convert moles to grams using a mole conversion.)what mass of powdered drink mix is needed to make a 0.5 m solution of 100 ml?