1. Balance the equations a. Zn +N, Zn2N2
b. C3H12 + O2 O CO2 + H2O
c. C H 4 + O2 CO2 + H2O
2

In 2002, the rare earth elements mine in mountain pass, california was closed because

What metric units would you use to measure the thickness of a key

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