The expression 0.5" is equivalent to 0.5 +0.5 +0.5...+0.5.
OO
0.5 times n.
0.5 -0.5 -0.5... -0.5.

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