This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
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2.3.1 Write down the chemical formula of the substance in which the ratio is: a) 1:1 For NaCl (Sodium chloride), the ratio of Na:Cl atoms is 1:1. Answer: NaCl b) 2:1 For H_2O (Water), the ratio of H:O atoms is 2:1. Answer: H_2O c) 1:2 For CO_2 (Carbon dioxide), the ratio of C:O atoms is 1:2. Answer: CO_2 d) 2:1:4 For H_2SO_4 (Sulphuric acid), the ratio of H:S:O atoms is 2:1:4. Answer: H_2SO_4 2.3.2 What is the ratio in CaCO_3? In the chemical formula CaCO_3: There is 1 Calcium (Ca) atom. There is 1 Carbon (C) atom. There are 3 Oxygen (O) atoms. The ratio of Ca:C:O atoms is 1:1:3. Answer: 1:1:3 That's 2 down. 3 left today — send the next one.