The names of the compounds fes, nacl, naoh, and pb(cn)2 all end in the suffix

a. -ate.
b. -ide.
c. -ite.
d. -ic.

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.

its first and third is your answer i did the qustion the fourth isnt right