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13 Solid copper(II) carbonate reacts with dilute sulfuric acid. CuCO3 + H2SO4 --> CuSO4 + CO2 + H2O The rate of the reaction can be changed by varying the conditions. Which changes always increase the ...
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11 An energy level diagram for the reaction between substance X and substance Y to form substance Z is shown. X + Y Z energy progress of reaction Which statement is correct? A Energy is released ...
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7 Which row shows the properties for an ionic compound? volatility    electrical conductivity when solid A high    good B high    poor C low    good D low    poor
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6 Rubidium is in Group I and iodine is in Group VII of the Periodic Table. Which row describes what happens when rubidium and iodine react together to form rubidium iodide? rubidium iodine A ...
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1 Which row describes what happens to the particles in solid iodine when it is heated and turned into a gas? separation of particles   speed of particles A closer together faster B closer together ...
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