An aqueous solution contains the following ions Cl^ - ,Ag^ + ,Pb^ 2+ ,NO 3 ^ - Identify the precipitates SO 4 ^ 2-- More than one precipitate will form. Identify the precipitates

1) AgCl
2) Ag_2SO_4
3) PbCl_2
4) Pb(NO_3)_2
5) PbSO_4

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line