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Plzzz fas answerrr Which answer choices correctly describe why the number of known elements more then doubled by 1861
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Write the empirical chemical formula of calcium with a mass percent of 38.8, phosphorus with a mass percent of 20.0, and oxygen with a mass percent of 41.3.
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The volume of helium in a blimp is 6.28 x 10^9 millimeters. the density of helium in the blimp is .1786 kilogram/meter^3. find the mass of the helium in the blimp.
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How do you lengthen a pattern piece? (family and consumer science, sewing)
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Plzzz fas answerrr
Which answer choices correctly describe why the number of known elements more th...
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