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THE DRUGGIST IS REQUIRED TO MASTER
PHYSICAL LAWS V Specific gravity, first used by Archimedes of Syracuse (fl. 250 B.C.), is the ratio of the weight of a solid or lifluwi to the weight of water and of the weight of a gas to the weight of air or hydrogen. It is helpful in analyzing compounds, determining the strength of solutions, and in identifying substances. *fhe concept of specific gravity is just one of the tools found in Physics which your druggist uses. YOUR DRUGGIST IS TRAINED , TO SERVE YOUR HEALTH NEEDS
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