Which of the following chemical reactions would not be predicted to occur based on the activity series?
a. Sn + CoCl2 → Co + SnCl2
b. Na + PbCl2 → Pb + 2NaCl
c. Pb + CuCl2 → Cu + PbCl2
d. Ca + MgCl2 → Mg + CaCl2

What neutral atom is isoelectronic to mn+4

What happens to isotopes that are unstable?

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6