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Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.
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Sum of brother and sisters age is 26. four times the brothers age is subtracted from three times the sisters age, the difference is 8. what are the ages of the brother and sister?
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Which of the following molecules is polar? c3h7oh c2h5cooh
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Calculate the molar mass of the compound sulfur trioxide (SO2). Use the periodic table to obtain the...
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