2014
The mass of 800cm3 of gas Q at s.t.p. is 1.0g. What is the molar mass of Q? [Avogadros constant = 22.4dm3 mol-1]
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2014 WAEC SSCE Chemistry Past Questions
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2014
If 0.20 mol dm-3 NaOH(aq) was evaporated to yield 5.0g of solid NaOH, calculate the volume of NaOH (aq) used. (Na = 23.0,O = 16:0; H = 1.00)
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2014
The oxidation number of sulphur in Fe2(SO4)3 is
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2014
A gaseous mixture contains 0,256 g of hydrogen and 2.00 g of oxygen. The mole ratio of hydrogen to oxygen in the mixture is (H=1.00; O=16,0)
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2014
An aqueous solution of Na2CO3 is
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2014
The type of energy changes that accompany the mixing of a strong acid to a strong base is
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2014
Which of the following statements about volatile liquids is correct? They have
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2014
The vapour pressure of a given volume of liquid increase when the
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2014
Which of the following relationships correctly expresses the Boyle's law?
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2014
Which of the following statements about a chemical system in equilibrium is correct/ The
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2014
Consider the reaction represented by the following equation: Na2CO3(aq) + 2HCl(aq) \(\longrightarrow\) 2NaCl(aq) + H2O(l) + CO2(g) . What volume of 0.02 mol dm-3 Na2CO3(aq) would be required to completely neutralize 40 c…
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2014
Which of the following salts on hydrolysis would give an alkaline solution?
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2014
The gases produced when Cu(NO3)2(s) was heated are
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2014
Which of the following substances with the corresponding pH value is an alkali?Substance pH
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2014
Zinc oxide is said to be amphoteric because it
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2014
Ethene molecules can be added to one another to form a long chain compound called a
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2014
Reduction is the process of
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2014
The reaction that occurs all the anode when CuSO4(aq) is electrolyzed using carbon electrode is
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2014
Consider the reaction represented by the following equation: N2(g) + 3H2(g) ⇌ 2NH3(g); ∆Hϴ = -xkJ mol-1. Which of the following conditions would increase the yield of NH3?
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2014
Which of the following factors would affect the equilibrium constant?
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