3. Even after twenty years of use most quarters have the same shiny appearance that they did when they were minted. Most pennies, however, have dulled considerably. What does this suggest about the position of the metal used to make quarters and the metal used to make pennies on the activity series? 4. Post 1982 pennies have a zinc core with a thin copper outer shell. Using your activity series predict what would happen if a post 1982 penny were put into a solution of hydrochloric acid?
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The most efficient way to establish the best possible economizer position is to measure
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Chemistry, 21.06.2019 18:30
Calculate the change in entropy if br2(l) is converted into gaseous br atoms. s° for br2(l) = 152.2 j/(mol•k) s° for br2(g) = 245.5 j/(mol•k) s° for br(g) = 175.0 j/(mol•k)
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When the speed of the bottle is 2 m/s, the average maximum height of the beanbag is m.
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Chemistry, 22.06.2019 22:30
The diagram shows the relationship between scientific disciplines.the names of some scientific disciplines have been removed from the boxes. which scientific discipline belongs in the blue box? a.physics b.biology c.chemistry d.metallurgy
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3. Even after twenty years of use most quarters have the same shiny appearance that they did when th...
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