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 paramet

hi my dude or dudette

o conteúdo de calor de um sistema é igual à entalpia apenas para um sistema que é constante

percent abundance for cu-63 can be shown as:

63 x + 65 (1-x) = 62.9296

65 - 62.9296 = 2 x

x = 1.035

thus, percent abundance for cu-63 is 1.035

percent abundance for cu-65 can be shown as:

63 x + 65 (1-x) = 64.9278

65 - 64.9278 = 2 x

x = 0.0361

thus, percent abundance for cu-63 is 0.0361

the mass spectrum of cu-63 showing the intense peak as, this isotope is found in nature more abundantly around 92.38 % in comparison to cu-65 which is found 62.58 % naturally