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Pls helppp 37.9 grams of unknown substance undergoes a temperature increase of 25.0°C after absorbing 989 J. What is the specific heat of the substance?
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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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