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Why Do Children's Multivitamins Dissolve

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My main question is: At which temperature will children 's multivitamins dissolve the quickest when placed in water at different temperatures (0°C,50°C and 100°C)? My hypothesis for this question is that the children 's multivitamin will dissolve differently when placed under different water temperatures.I predict that the multivitamins will dissolve very fast when placed in the hot water ( in this experiment 100°C), and will dissolve very slowly when placed in the ice cold water (in this experiment, 0°C).My prediction is based on alot of things that are dissolvable.Dissolve more quicker in hot water than cold water as it has more concentration.

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