hydrogen:alkanes like butanol
nitrogen:air
anybody wants ans or explainations to answer for the chem exam i can help u guys...
and By the way about the phosphate thingy, u must go with tht hight of precipitate graph, cuz writing the reason which goes like this "it mus be a reactive metal so it could displace sodium, and must be soluble" then i feel its wrong , cuz u didnt go with the question...(this ques is the only ques i mess up in)