Physics, 12.07.2019 18:40 deontehiggins42
How can you be certain that a chemical change has occurred? a) there is at least one substance that was not present before the change b) the amount of measurable material is different after the change c) the change substance have become warmer d) at least one substance undergoes a change of state
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Which statement best describes how private industry decides where to spend the money on research and development
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Physics, 22.06.2019 08:30
Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.
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