Sub-topic 1
2025 · National One-Eighth
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Mass of solute required to prepare a solution of a given volume and molarity
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Sub-topic 2
2026 · National Preliminary
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Mass of solute required to prepare a solution of a given volume and molarity
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Sub-topic 3
2026 · National Preliminary
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Volume of stock solution required for a dilution (c1v1 = c2v2)
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Sub-topic 4
2026 · National Preliminary
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Equilibrium concentration from kc for a simple a(g) <-> b(g) equilibrium
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Sub-topic 5
2023 · National Preliminary
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Concentration of a solution from mass of solute and volume
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Sub-topic 6
2025 · National Preliminary
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Concentration of a solution from mass of solute and volume
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Sub-topic 7
2026 · National Semifinal
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Mass of solute crystallizing on cooling a saturated solution (solubility curve)
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Sub-topic 8
2025 · National Semifinal
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Volume of water added to dilute an acid to a new concentration
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Sub-topic 9
2026 · National Quarterfinal
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Mass of a hydrated acid required to prepare a solution of given volume and molarity
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Sub-topic 10
2026 · National Quarterfinal
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Molar concentration of a concentrated acid from its density and mass percentage
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Sub-topic 11
2026 · National One-Eighth
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Molar concentration from mass of dissolved ion
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Sub-topic 12
2025 · National Quarterfinal
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Density of a solution from container mass measurements
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Sub-topic 13
2025 · National Quarterfinal
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Mass of a hydrated salt from molarity and volume
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Sub-topic 14
2023 · National One-Eighth
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Molarity of a dissolved hydrated salt
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Sub-topic 15
2024 · National One-Eighth
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Molar solubility of a sparingly soluble salt from a given mass and volume
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Sub-topic 16
2022 · National Final
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Identifying a metal from a 1:1 reaction with a known volume and concentration of acid
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Sub-topic 17
2024 · Regional Championship
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Mass of solute in a solution from its molar concentration, volume and molar mass
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Sub-topic 18
2024 · National Preliminary
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Concentration of a solution is unchanged by taking a smaller sample volume
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Sub-topic 19
2013 · National Quarterfinal
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Moles of salt formed from mixing an acid and base of given concentrations/volumes
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Sub-topic 20
2013 · National Quarterfinal
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Diluting a diprotic-acid stock to a target h+ concentration
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Sub-topic 21
2013 · National Quarterfinal
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Diluting a magnesium chloride stock to a target cl- concentration
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Sub-topic 22
2013 · National Quarterfinal
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Diluting a sodium sulfate stock to a target na+ concentration
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Sub-topic 23
2014 · National Quarterfinal
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Mass of gold extractable from ore given its concentration in parts per million
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Sub-topic 24
2017 · National Semifinal
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Mass of dissolved calcium hydrogencarbonate in a large volume of water from its % w/v concentration
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Sub-topic 25
2021 · National Quarterfinal
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Concentration of mg2+ ions from dissolving a hydrated magnesium sulfate mass
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Sub-topic 26
2022 · National Preliminary
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Volume of solution needed to dissolve a mass of sodium carbonate to a target concentration
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Sub-topic 27
2022 · National Preliminary
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Concentration of mgso4 dissolved to a given volume
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Sub-topic 28
2022 · National Preliminary
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True or false: a sugar solution is an example of a solid-in-liquid solution
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Sub-topic 29
2022 · National Preliminary
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True or false: smoke is an example of a solid-in-gas solution
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Sub-topic 30
2022 · National Preliminary
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True or false: air is an example of a gas-in-gas solution
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Sub-topic 31
2023 · National Preliminary
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Concentration of lithium sulfate dissolved to a given volume
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Sub-topic 32
2023 · National Quarterfinal
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Molarity of aluminum nitrate from its mass and solution volume
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