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If an atom is represented as \( {}^{23}_{11}X \), which of the following deduction is correct?
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If 10.5g of lead (II) trioxonitrate (V) is dissolved in 20cm3 of distilled water at 18oC, the solubility of the solute in mol dm-3 is
[Pb = 207, N = 14, O = 16]
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0.0075 mole of calcium trioxocarbonate (IV) is added to 0.015 mole of a solution of hydrochloric acid. The volume of gas evolved at s.t.p is
[Molar volume of a gas at s.t.p = 22.4 dm3]
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C(s) + H2O(g) → H2(g) + CO2(g)
ΔG for the reaction above at 1300k is -43KJ. At this temperature, the reaction is
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The gasification of coke is used for the manufacture of
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CuO(s) + H2(g) ↔ Cu(s) + H2O(l)
What is the effect of increasing the pressure on the equilibrium reaction above?
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In the diagram above, which of the curves represents the evolution of oxygen with time in the equation 2KClO3(s) → 2KCl(s) + 3O2(g)?
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The percentage of water of crystallization in ZnSO4.7H2O is
[Zn = 65, S = 32, O = 1, H = 1]
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What current will deposit 3.25g of zinc in 2hrs?
[Zn = 65, F = 96500 mol-]
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