What is the value of n in ch3(ch2)nch3 if the make of the hydrocarbon is heptane?

Which statement best describes the oxidation numbers of the atoms found in magnesium chloride? a. magnesium has a 2- oxidation number and chlorine has a 1+ oxidation number. b. magnesium has a 2- oxidation number and chlorine has a 2+ oxidation number. c. magnesium has a 2+ oxidation number and chlorine has a 1- oxidation number. d. magnesium has a 1+ oxidation number and chlorine has a 1- oxidation number.

What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5

Can someone me with 6 to 10 plz this is for masteries test.