Answer to Question #317829 in General Chemistry for heyhihi

Question

Suppose you decompose 0.250 mole of Ag2S into its element. How many moles of silver would you have? How many moles of sulfur would you have?

Answer 1

Ag2S ==> 2Ag^+ + S^-2

0.250 moles Ag2S will give you 2x0.250 moles Ag because the formula tells you there are 2 Ag ions for each Ag2S molecule. The moles of sulfur will be 1x0.250 because there is 1 atom S for each molecule of Ag2S.