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Explain why seeing a gas doesn not always indicate that there was a chemical change.
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Explain why pure hydrogen cyanide does not conduct electricity, but become a conductor when it is dissolved in water? (at room temp, pure hcn exists as a volatile liquid)
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How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.
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Connect the whole numbers on the periodic table to indicate what they represent?
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Explain why seeing a gas doesn not always indicate that there was a chemical change. ...
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