| sorry, i miss intepreted the question. lemme try again
X+Y yields precipitate and X+Z also yields precipitate; X+W has no precipitate. Thus, X is AgNO3, Y is either Na2CO3 or NaCl, and Z is the other. This leaves W as H2S.
Now add H2S to both Y and Z. the one thats Na2CO3 will produce CO2. the one remaining is NaCl
actually, about the question regarding water density, i have no idea why thats the case (its something about IMF) - i just know that it's 4 degrees C and have pondered about that for a while (did some book research and couldnt find a solid reasoning)
now for a question,
What is the electron configuration of Au? |