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True or false: When adding acid to base the phenolphthalein indicator changes colour from colourless to pink at the end of the titration.
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An alloy contains 66 g of pure zinc. what is the percentage of zinc in the alloy? express your answer to two significant figures and include the appropriate units.
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True or false: When adding acid to base the phenolphthalein indicator changes colour from colourless...
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