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Noble gases are the most reactive elements on the periodic table. a. true b. false
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Which of the following units is not an official si unit
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A2-kg bowling ball is 1 meter off the ground on a post when it falls. just before it reaches the ground, its traveling 4.4 m/s. assuming that there is no air resistant, which statement is true a. the initial potential energy is less then the final kinetic energy b. the mechanical energy is not conserved c. the mechanical energy is conserved d. the initial potential energy is greater than the final kinetic energy
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A 25°C, una solución de HNO3, de 5L de volumen tiene una concentración de 18% en peso. Si la densida...
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