Chapter 3 aka Chapter thats gonna kick my butt

ok. so yeah looking at the problem set 11,15,19-35 odd (excluding 21), and 39-43 odd. i got most of it but i really just cannot figure out 27, 33a, 39, and 43c. any help would be very appreciated! juniors remember to vote for me as vp tomorrow! thanks!

Okay, well what questions do you have? Gimme something to start with here since we can't just give answers.
Isn't that Friday's problem set?

yeah it is.25a.Mg(CH3CO2)2 give the formula charge, and # of each ion that makes up the compound. 27. Platinum is a transition element and forms Pt2+ and Pt4+ ions. Wright the formulas for the compounds of each of these ions with (a) cholride ions and (b) sulfide ions. 33a. Ca(CH3CO2)2 name this ionic compound. 39. Consider the two ionic compounds NaCl and CaO. In which compound are the cation-anion attractive forces stronger? Explain. 43c. Hydrazine - give the formula. cant find this one in the book at all. looked in the index. thinking it has something to do with Hydrogen. for the rest of them i just cant find them in the book. any tips on where to look?

Kay, 25, is pretty self explanatory, you just have to state the different compounds in the ion, what it's charge is, and how many of the particular ion there is in there, e.g, 1 mg, and 2 (ch3co2).. give the charges as well.

27, just add the chloride and the sulfides to the pt's. so e.g, and SO4 to one of them...

33, the ion in there is just rearranged, if you do some manipulation it makes sense..

39, this is explained in the chapter, look up Coulcomb's law.

Hydrazine? ask the capt.

thanks man.

Nooo problem, if you need anymore help, I'll be on for a bit.

Hydrazine is N2H4, it's commonly used as a rocket fuel.