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9. What do chemical symbols and formulas represent, respectively?
elements and compounds
atoms and mixtures
compounds and mixtures
elements and ions
Answers: 1
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Which class of molecules functions as chemical signals? hormones water carbohydrates proteins
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What term describes technology that operates on an atomic level
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An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.
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Ammonium perchlorate nh4clo4 is the solid rocket fuel used by the u.s. space shuttle. it reacts with itself to produce nitrogen gas n2 , chlorine gas cl2 , oxygen gas o2 , water h2o , and a great deal of energy. what mass of nitrogen gas is produced by the reaction of 2.1g of ammonium perchlorate?
Answers: 2
9. What do chemical symbols and formulas represent, respectively?
elements and compounds
atom...
atom...
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