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How does kepler second law of planetary motion overthrow one of the basic beliefs of classical astronomy
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Scientists are often interested in knowing the molar heat of combustion β the heat released during the combustion of one mole of a substance. use the periodic table to find molar masses. how many moles of ethanol are present in the sample?
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Calculate the ph at the equivalence point for the titration of a solution containing 150.0 mg of ethylamine (c2h5nh2) with 0.1000 m hcl solution. the volume of the solution at the equivalence point is 250.0 ml. kb forethylamine is 4.7 Γ 10β4 .
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How many liters of oxygen gas, at standardtemperature and pressure, will react with 35.8 grams ofiron metal? 4 fe (s) + 3 o2 (g) β 2 fe2o3 (s)
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A swallow sitting on a fence sings a song for anyone who will listen. Identify the energy transforma...
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