How does the appearance of a substance change when it
changes phase?...
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Chemistry, 22.06.2019 05:30
Describe the interaction that occurs between two objects with the same electrical charge.
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Chemistry, 23.06.2019 01:30
Ariver current has a velocity of 5km/h relative to the shore, and a boat moves in the same direction as the current at 5 km/h relative to the river. how can the velocity of the boat relative to the shore be calculated?
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Chemistry, 23.06.2019 06:00
In an exothermic reaction at equilibrium, what is the effect of lowering the temperature? a. the reaction makes more products. b. the reaction makes more reactants. c. the reaction is unchanged.
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Chemistry, 23.06.2019 06:30
How can the number of core electrons be determined from the periodic table
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