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Chemistry, 22.06.2019 13:30, citlalli30
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
Answers: 2
Chemistry, 23.06.2019 09:30, Nextlevel3
Where are the noble gases located in the periodic table? a. in the center b. on the left side c. in the upper right corner d. on the far right side
Answers: 1
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