A 0.6333 g sample of a metal carbonate was reacted with hydrochloric acid. The carbon dioxide gas generated was collected over water at a temperature of 26.0°C and pressure of 103.80 kPa. The final volume of carbon dioxide gas collected was 125.0 mL. XCO₃(s) + 2HCl(aq) → XCl₂(aq) + H₂O(l) + CO₂(g) What is the chemical formula for the metal carbonate?

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Q: 5. In the experiment aimed to calculate the molar volume of a gas, a 0.02 mole of [CuCO3.Cu(OH)2]…

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Q: Why are there no changes specified for Ni as shown, part (f)? What property of Ni does change?

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.