2024
Pure water contaminated with quicklime will have a pH of
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2024 WAEC SSCE Chemistry Past Questions
2024
\(_8\)X\(^{2-}\) and \(_{10}\)Y are
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2024
Pairs of outermost shell electrons which are not used in bonding are
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2024
The volume of 22g of CO\(_2\) at stp is equivalent to [C =12, O =16, molar volume at stp = 22.4 dm\(^3\) ]
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2024
Which of the following conditions are necessary for the preparation of alkanoates from alkanols and alkanoic acid?
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2024
A weak acid is one which
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2024
According to the collision theory of reaction rates, which of the following conditions is not required for two molecules to react? The molecules must
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2024
The following organic compounds are polymers except
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2024
A saturated solution at 30\(^0\)C will normally produce crystals at a temperature of
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2024
Ethane of volume 400 cm\(^3\) was completely burnt in excess oxygen according to the following equation: 2C\(_2\)H\(_6\)\(_(g)\) + 7O\(_2\)\(_(g)\) → 6H\(_2\)O\(_(g)\) + 4CO\(_2\)\(_(g)\) Calculate the volume of steam…
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2024
Catalysts alter reaction rates by
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2024
The percentage by mass of Oxygen in MgSO\(_4\).7H\(_2\)O is [ M\(_r\) of MgSO\(_4\).7H\(_2\)O = 246 ]
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2024
Which of the following household liquids would be effective in treating someone with too much acid in the stomach?
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2024
Isotopes of the same element have similar chemical properties because they have the same number of
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2024
The number of shared pair of electrons in a molecule of methane is
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2024
Naturally occurring Boron is made up of 19.9% \(^{10}\)B and 80.1% \(^{11}\)B. The relative atomic mass of Boron is
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2024
Consider the reaction represented by the equation: C\(_3\)H\(_8\) + 5 O\(_2\) → 3CO\(_2\) + 4H\(_2\)O If 0.1 mole of C\(_3\)H\(_8\) was completely burnt, what volume of CO\(_2\) would be produced at stp? [volume…
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2024
Which of the following arrangements of elements is in order of increasing ionization energy?
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2024
Aluminium is suitable for making alloys for aircraft construction because it
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2024
Which of the following statements describes transition elements? They
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