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Now calculate and record the average density of a penny (in g/mL) made after 1982. Show your work.
Answers: 1
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The alkali metals (group 1) consist of lithium (3), sodium (11), potassium (19), rubidium (37), cesium (55), and francium (87). they are soft, metallic solids with low densities and low melting points. based on the data shown in figure 1, how many valence electrons do alkali metals share?
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Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:
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Asubstance is held in an open container. its particles move past one another at random speeds but do not leave the container. heat is removed from the system, and the particles slow down. when enough heat is removed, the particles no longer have enough speed to overcome the weak attractive forces between them. when this happens, the substance enters its solid state. the process described above is known as .
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Now calculate and record the average density of a penny (in g/mL) made after 1982. Show your work....
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