Calculate the value of AH° for the reaction C2H6 + 2 Cl2 - C2H4Cl2 + 2 HCl given the bond energies (kJ/mol):
Bond
Bond Energy
432 kJ/mol H-H
C-H 314 kJ/mol
H-CI 427 kJ/mol
C-C 347 kJ/mol
Cl-Cl 243 kJ/mol
339 kJ/mol C-Cl

by cartels in other countries, shipped by air, mail, or land. i cant really see your answer choices : /

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.