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formula untuk pengiraan mol sekiranya ada volume dan molarity
num. of mol = molarity×volume/1000
or
num. of mol = MV/1000
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ish ish ish, npe ada yg salah dalam soalan mengira mol tu, tak silap saya, langkah atau contoh soalan pengiraan mol tu ada dalam nota
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13. 50 cm³ of 0.2 mol dm⁻³ lead(II) nitrate reacts with excess sodium iodide.
Calculate the number of moles of lead(II) nitrate used.
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12. What is the yellow precipitate formed when lead(II) nitrate reacts with potassium iodide?
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11. Heating copper(II) nitrate produces copper(II) oxide, brown gas, and colourless gas.
What is the brown gas formed?
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10. What should be done after filtering a precipitate to obtain dry salt crystals?
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8. A white precipitate forms when silver nitrate solution is added to a solution containing chloride ions.
What is the white precipitate?
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6. Which method is used to prepare an insoluble salt such as lead(II) sulfate?
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4. Which substance is suitable to neutralise an acidic bee sting?
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3. A farmer adds calcium carbonate to acidic soil. What is the purpose?
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