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Chemistry 22 Online
OpenStudy (anonymous):

You are trying to distinguish between two unknown powders. Both are determined to have a neutral pH, turn gray when mixed with iodine, and do not react to the biuret test. These two unknowns could be: a. Gelatin or corn starch c. Corn starch or baking powder b. Baking powder or baking soda d. None of these

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