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Chemistry, 23.06.2019 01:00
Which of the following is a physical change? a.burning a piece of wood b.sawing a piece of wood in half c.rust forming on an iron fence d.a copper roof changing color from orange to green
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Chemistry, 23.06.2019 02:30
When the ionic compound nabr dissolves in water, br– ions are pulled into solution by the attraction between what two particles? a. the na+ and br– ions b. the na+ ion and the negative end of a water molecule c. the br– ion and the positive end of a water molecule d. the br– ion and the negative end of a water molecule
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Chemistry, 23.06.2019 03:50
Show how to convert the temperature 84.7° c to kelvin. include all steps and label the final answer
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Chemistry, 23.06.2019 11:00
Which example is a mechanical wave? a.microwave b.radio wave c.water wave d.ultraviolet light
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How many moles are in 3.920x10^25 molecules of (NH4)2CO3?...
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