Which of the following most likely happens during a physical change? a. an irreversible process takes place. b. substance changes its form but not its molecular composition. c. new atoms are introduced in the molecules of the substance. d. a substance reacts differently with a chemical before and after the change.
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If 15 drops of ethanol from a medicine dropper weigh 0.60g, how many drops does it takes from a dropper to dispense 1.0ml of ethanol? density of ethanol is ethanol is 0.80g/ml.
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Which of the following most likely happens during a physical change? a. an irreversible process tak...
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