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The horizontal fraction bar was introduced by the Arabs.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.