9. The graph could represent the formation of all the hydrogen halide compounds from their elements except for

A. HBr (g)

B. HCl (g)

C. HI (g)

D. HF (g)

What is the name of the following compound? A) 2-ethyl-3-propylpenlane B) 4-methyl-3-ethyIheptane C) 4-ethyl-3-methylheptane D) 2, 3-diethylhexane E) 4-ethyl-5-methylheptane