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When calcium oxide is heated with carbon, the oxide will

When calcium oxide is heated with carbon, the oxide will A. be converted to carbide B. be converted…
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5SO2(g) + 2KMnO4(aq) + 2H2O(l) → K2SO4 + 2MnSO4(aq) + 2H2SO4(aq) In the reaction above,…

5SO2(g) + 2KMnO4(aq) + 2H2O(l) → K2SO4 + 2MnSO4(aq) + 2H2SO4(aq) In the reaction above, the products give…
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If the heat of combustion of hydrogen is -285.8kJ, What is the heat of formation…

If the heat of combustion of hydrogen is -285.8kJ, What is the heat of formation of water? A.…
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In the electrolysis of CuSO4(g) using platinum electrodes, the reaction at the anode is

In the electrolysis of CuSO4(g) using platinum electrodes, the reaction at the anode is A. 4H+ + 4e–…
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Na2CO3(g) + 2HCl(aq) → 2NaCl(aq) + H2O(l) + CO2(g) How many moles of sodium trioxocarbonate…

Na2CO3(g) + 2HCl(aq) → 2NaCl(aq) + H2O(l) + CO2(g) How many moles of sodium trioxocarbonate (IV) are there…
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The solution that will conduct the highest amount of electricity is

The solution that will conduct the highest amount of electricity is A. 0.5 mol dm-3 of hydrochloric acid…
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In which of the following is the oxidation number of sulphur equal to -2?

In which of the following is the oxidation number of sulphur equal to -2? A. SO3 B. S8…
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H2(g) + Br2(g) → 2HBr(g) The above reaction is carried out at 25oC. ΔH is…

H2(g) + Br2(g) → 2HBr(g) The above reaction is carried out at 25oC. ΔH is -72 kJ mol-1…
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Zinc and carbon rods are used as anode and cathode respectively in a

Zinc and carbon rods are used as anode and cathode respectively in a A. Leclanche cell B. lead…
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Trioxonitrate (V) acid is not used for preparing hydrogen gas from metals because it

Trioxonitrate (V) acid is not used for preparing hydrogen gas from metals because it A. is strongly oxidizing…
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