How are I and II related? I and H3C-C=CH 11 Select one: O A. They are identical compounds. O B. They are different compounds, not isomers. O C. They are resonance structures. O D. They are isomers.

If NOCI has a heat of formation of +52 kJ/mol, and N₂O has a heat of formation of +9 kJ/mol, calculate the energy change for the following reaction. 2 NOCI + O2 --> N2O4 + Cl2 a. -95 kJ/mol b. -43 kJ/mol c. +43 kJ/mol d. +113 kJ/mol

QUESTION 11 OH О а. NaOH Ob. Ag20, H20, NH4ОН O C. BrH4 O d. CrОз, HC, руridine O e. CrO3, H20, H2SO4 Of. NABH4 Og. PH3PO O h. LIAIH4 O i. NaH

MCQ 10: The number of positive ions balances the number of negative charges so as to neutralize the compound and give the charge A. one B. unit C. zero D. negative

Questions 6a, b, c, d is finked to one another and focus on the molecule shown below. O: H C2 H. I-Z:

To answer the questions, interpret the following Lewis diagram for CO3". 12- 1. For the central carbon atom: The number of non-bonding electrons The number of bonding electrons The total number of electrons 2. The central carbon atom A. obeys the octet rule. B. has less than an octet. C. has more than an octet. || :O: :O:

Name the compounds a)BF3 b) SO2

2. Based on the MolView activity, which compound has the most covalent bonds? A. Water B. Hydrogen sulfide C. Carbon tetrachloride D. Methyl chloride E. Propane

MCQ 33: Under standard conditions the energy with enthalpy change when 1 mole of an ionic compound is formed from its gaseous ions is A. bond energy B. crystal energy C. lattice energy D. structural energy

Jj.11.