Question
1. DDT, C14H9C15, a synthetic organic compound used as an insecticide in some countries. Complete the...
1. DDT, C14H9C15, a synthetic organic compound used as an insecticide in some countries. Complete the following table for DDT. (Hint: Practice midterm exam #2, Q#2) (Show your work) (4pts) moles of Mass of DDT Number of DDT molecules Moles of CI atoms Number of CI atoms DDT 500.mg 6.50 x 1022
Answers
и ол. of DDT 1 мод о тоlsculu | молдо, 007 e DDT el atoms р. ор и atoms. Ооо1 4 | 8:4x00 000 28 668 x 10" Sob m4e or 0.5g. ті moles 2 3 38 - 24 59.29 0.10 7 la sexio р. [o 79 6. Со Хо?? | 0,25 0215 129x10" .24xoCuven mass of DDT, W = 500 mg Molave mass of DDT, M - 354.59 Converting given mass into grams. olg = 1000 mg Soomg = I x 500. 1000 Thus, moles , n = geven mass of DDT = w molare mass of DD 7 m moles, n = 0.0 . 354.5 0.001 4 moles) In = Number of DDT = mous x Avagedro's Number molecules IN - Avaegadeo's Number = 6.02 X1023. N = 0.001 4X 6.02 x 10²3 =.8. 4 X10 3 x 1023 N.– 8.4 x 1020 molecules.DoT cell mous of chloine atom in n = mass of DoT in grams. mass of chlonne aloms n= 0. 5g 5x 35.5 0.5 n n = 0.002 8 moles Number of chlonne atoms - N = = & moles X NA 0.0028 X 6.02 X10 1068x102 x 1023 IN = 1.68 x 1021 22 From 6.50x10 molecules of DDT. mous n = NXNA. N = No. of molecules given NA = Avogadro's Number. n = N = 6.50x1022 NA 6.02 x 1023 n = 1.079810T n = 0.1079 moles /molls of DDT = 0.1079. mass of DDT, W- nx M. n = moles M = Molar mass. w 0.1079 x 354.5 Tw= 38.297 from given mous of el. mass of DDY ce atoms and we no can calculate of atoms cl , n = meles of atoms 3812 7705 à 0. 215 moles. In no. of ce atoms - NX NA. = 0.215 X 6.02 X103 = 1.29 x 1023 matoms
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