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If there are 87.3 grams in a sample of K2Cr207, how many moles would this be?
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Tin has ten stable isotopes. the heaviest, 124sn, makes up 5.80% of naturally occuring tin atoms. how many atoms of 124sn are present in 82.0 g of naturally occurring tin? what is the total mass of the 124sn atoms in this sample?
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What determines the average kinetic energy of the particles in a gas? a. the number of collisions b. the number of particles c. the size of the particles d. the temperature
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If there are 87.3 grams in a sample of K2Cr207, how many moles would this be?...
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