What are the most chemically stable elements (in terms of reactivity) on the periodic table?

What three things determine the shape and size of a puddle when water is poured out onto a surface

When the speed of the bottle is 2 m/s, the average maximum height of the beanbag is m.

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