Created by StemPy LabMatch each observation in List-I with the law in List-II. List-I (Observation) A. Magnesium burns in a sealed flask; the total mass is unchanged B. Black copper oxide from two sources: gives of copper, gives C. of sulfur takes of oxygen in one oxide, in another D. of and of give of , at one temperature and pressure List-II (Law) I. Multiple proportions II. Conservation of mass III. Gay Lussac's law of gaseous volumes IV. Definite proportions
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← Methanal, HCHO, and glucose, C₆H₁₂O₆, have the same empirical formula, CH₂O. Each is burnt completely in excess oxygen to carbon dioxide and water. Atomic masses in g mol⁻¹: H 1, C 12, O 16. Statement I: Burning 1 mol of methanal and 1 mol of glucose gives the same number of moles of carbon dioxide. Statement II: Burning 3.0 g of methanal and 3.0 g of glucose gives the same mass of carbon dioxide, 4.4 g each.Read these statements about amounts of substance. Atomic masses in g mol⁻¹: H 1, C 12, N 14, O 16, Na 23, S 32, Cl 35.5, Ca 40. (i) 9.8 g of H₂SO₄ contains 0.40 mol of oxygen atoms. (ii) 5.85 g of sodium chloride contains 6.022 × 10²² molecules of NaCl. (iii) 0.50 mol of CaCl₂ contains 1.5 mol of ions. (iv) 3.2 g of O₂ and 3.2 g of O₃ contain equal numbers of oxygen atoms. (v) 2.8 g of N₂ and 2.8 g of CO contain equal numbers of molecules. How many of the statements above are correct? →
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