[marie]

*delete me* 1.Is thymol solid or liquid at room temperature?
   No idea, i guess that its solid because based from what iv read it describes as colorless translucent crystals.
         2.what are the formula, molecular weight, and color of lead azide?
    I hav found 1 in the internet that its molecular weight is 65.01amu. but im not quite sure if its azide alone or lead azide..
         
 I would be very much appreciate your ideas.Thanks & God Bless!

[xiankai]

the azide anion is N₃^3-

that 65.01 amu for 1 mole of lead azide must be wrong. lead has a Mr of around 207 alone.

[Borek]

the azide anion is N₃^3-

3-?

[hmx9123]

Lead azide is: Pb(N₃)₂.  The azide anion has a -1 charge on it.  It is generally white crystals.  Don't screw with this stuff: it's a sensitive primary high explosive.