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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
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Chemistry, 22.06.2019 21:00, itasykamila
How many neutrons does an element have if its atomic number is 50 and its mass number is 166
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The volume of 1 mole of gas at 1 mole of gas at 1 atm and 0°c is equal to what liters...
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