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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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At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure
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What is the percentage of hydrogen in nitrogen trihydride
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