This example is describing the Chromatography method.
Exothermic gives off heat/energy and endothermic takes in heat/energy. Exothermic example: a candle flame
Endothermic example: baking bread
In Exothermic, you can expect the surrounding temp. to rise, and in Endothermic you can expect the surrounding temperature to fall.
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Answer: a for the first one , d for the second one, b for the third one.
Explanation:
Answer: Diameter = 7 inches
Area of circle is 38.46 inches²
Explanation: The diameter is the radius x 2 3.5 x 2 = 7 inches
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A gas behaves more like an ideal gas at higher temperature and lower pressure, as the potential energy due to intermolecular forces.