(112) (Anti) "Heroic" Substances

Chemist depicted above is famous for synthesizing 2 substances. While one of them saved millions of lifes, the other one sent millions to the grave. What's the name of the chemist and which 2 substances did he synthesize ?

ANSWER: Felix Hoffmann, synthesized medically useful forms of Heroin and Aspirin.

(44) The Noble Stranger

What chemical element gets its name from the greek word meaning 'stranger'?

ANSWER: Xenon, noble gas / learn more...