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Which statement describes evidence of a chemical reaction? a) ice melting eliminate b) water boiling c) lighting a match d) grape juice freezing
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Calculate the frequency of a wave in a spring toy. the wave has a speed of 1.1 meters per second and a wavelength of 0.1 meters. *
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If 3 moles of a compound use 24 j of energy in a reaction, what is the a hreaction in j/mol?
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If a particle has z = 25 and 23 electrons, what is its charge?
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In the process of a tree undergoing photosynthesis as it grows a physical or chemical...
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