I am bor ed any any one wanna talk to me ​

Match the mixture with the substance// i really need on this guys (it’s a pic btw)

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

Use the half-reactions of the reaction au(oh)3 + hi -> au +i2 +h2o to answer the questions