A450.0 ml sample of 0.257 m solution of silver nitrate is mixed with 400.0 ml of 0.200 m of calcium chloride. what is the concentration of cl¹⁻ in solution after the reaction is complete?

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

b) nuclear ive learned that in a pedtrodic table

c) should be the answer.