5. Use the known reactions to determine the AHxn of the following reaction.
C2H4(g) + Cl2 (8) - C2H4C12 (1)
4 HCl (g) + O2(g) → 2 Cl2(g) + 2 H2O (1)
AH° = -202.4 kJ/mol
2 HCI (g) + C2H4 + 1/2O2(0) CH. Cl20) + H2O (1) AH° = -318.7 kJ/mol

The semi-conductors on the periodic table are classified as

In ccl4 is there a certain length that the main atom carbon is a certain distance from the chlorine’s?

Two changes are described below. a green banana turns yellow and ripens. a layer of rust forms on an iron nail. which statement is true about the two changes? a) both are chemical changes because new substances are formed. b) both are physical changes because only the physical state of the substances change. c) a is a physical change due to a change of state, but b is a chemical change because new molecules are formed. d) a is a chemical change due to a change of state, but b is a physical change because new molecules are formed.