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When did stem cell research become known ? who discovered stem cell? what experiments or studies have been conducted so far?
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To prevent the presence of air, noble gases are placed over highly reactive chemicals to act as inert "blanketing" gases. a chemical engineer places a mixture of noble gases consisting of 4.37 g of he, 13.36 g of ne, and 36.65 g of kr in a piston-cylinder assembly at stp. calculate the partial pressure in torr of kr.
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Which statement accurately represents the arrangement of electrons in bohr’s atomic model?
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Explain why wrapping a fire blanket around somebody on fire would not be a good idea....
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