6) Identify which elements are oxidized and which elements are reduced. 16(H+) + 2TcO(4¯) + 3Sn(2+) ---> 2Tc(4+) + 3Sn(4+) + 8H2O ox: red:

Which of the following elements is a representative element? a. chromium (cr) b. aluminum (al) c. mercury (hg) d. silver (ag)

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?

Which is an example of the practical pursuit of alchemy? a. forming perfect substances. b. transforming base metals. c. developing metalworking techniques. d. linking spiritual characteristics with material substances.