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Compare and contrast physical changes with chemical changes.
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Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?
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Chemistry, 22.06.2019 19:00
Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.
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4.How element gold is different from oxygen?...
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