An unknown metal displaces cadmium (cd) from solution but does not displace chromium (cr). using the activity series, determine the unknown metal.
lead (pb)
manganese (mn)
iron (fe)
zinc (zn)
cobalt (co)

Element before carbon on the periodic table

The organs inside the body and how they function together

Calculate the ph at the equivalence point for the titration of a solution containing 150.0 mg of ethylamine (c2h5nh2) with 0.1000 m hcl solution. the volume of the solution at the equivalence point is 250.0 ml. kb forethylamine is 4.7 × 10−4 .