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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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What conclusion can you draw from this experiment about the components of the black ink?
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Which factor is likely to impact the possible number of compounds? presence of unlimited number of elements in the periodic table the inability of atoms to align perfectly with other atoms the ability of all elements to react with every other element all elements being equally reactive
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The density of pure gold (au) is 19.3 g/cm3. what is the mass of a block of gold that measures 1.2 c...
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