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

explanation:

crosscutting concepts have application across all domains of science. as such, they are a way of linking the different domains of science. they include patterns; cause and effect; scale, proportion, and quantity; systems and system models; energy and matter; structure and function; and stability and change.

answer: h+ its less than oh

explanation:

they all get energy from eating other animals, dead animals to be more precise.

hienas tends to steal pray from other animals. crows and vultures tend to eat dead animals and leftovers.

hope it ,

bioteacher101