2009
In bonded atoms, increase in electronegativity difference,
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2009 WAEC SSCE Chemistry Past Questions
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2009
Which of the following arrangements is in order of increasing ionization energy?
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2009
Which of the following properties of covalent compounds is not correct? They
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2009
Which of the statements about the behaviour of the atom is correct?
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2009
What is the value of -14oC on the Kelvin temperature scale?
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2009
What is the percentage by weight of calcium in Ca(OCI)2? [Ca = 40, Cl = 35.5, O = 16]
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2009
Consider the reaction represented by the equation: 2NaHCO3 → Na2CO 3 + H 2O + CO 2. What is the mass of sodium trioxocarbonate (lV) produced by the complete decomposition of 33.6 g of sodium hydrogen trioxocarbonate (IV)…
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2009
How many molecules are there in 14 g of nitrogen at s.t.p.? [N = 14, Avogadro's constant = 6.02 x 1023 mol-1]
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2009
The number of particles in one mole of a chemical compound is the
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2009
Salts that contain water of crystallization are said to be
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2009
Consider the reaction represented by the following equation: H 2(g) + \(\frac{1}{2}\) O(g) → H 2O(g) ∆H =-285.8 KJmo -1 ∆H represents the enthalpy of
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2009
In a chemical reaction, ∆H is positive when
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2009
In a mixture of gases which do not react chemically together, the pressure exerted by the individual gases is called
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2009
Which of the following expressions correctly represents Charles' law?
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2009
A solution that contains as much solute as it can dissolve at a given temperature is said to be
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2009
Which of the following hydroxides will readily dissolved in water?
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2009
Which of the following compounds is not a double salt?
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2009
Which of the following dilute acids does not react with metals to liberate hydrogen?
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2009
Which of the following substances is the anode in the dry Leclanche cell ?
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2009
Which of the following factors will affect the rate of the reaction represented by the equation? 2HCI(aq) + CaCO 3(s) → CaCI2(aq) + H2O (I) + CO2(g) l. Pressure ll. Concentration III. Nature of reactants IV. Temperature
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