What type of molecule is cis-2-pentene? O A. Alkene
O B. Alkyne
O C. Branched alkane
O D. Alkane

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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

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