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Hogar Banco de preguntas Química Archive 2025 January 16

Chemistry Questions from Jan 16,2025

Browse the Chemistry Q&A Archive for Jan 16,2025, featuring a collection of homework questions and answers from this day. Find detailed solutions to enhance your understanding.

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4 Antara gas yang berikut, yang manakah mengandungi 0.6 mol atom pada suhu dan tekanan bilik? [Isi padu molar gas pada keadaan bilik] Which of the following gases contains 0.6 mol of atoms at room temperature and pressure? [Molar volume of gas at room conditions] A neon of neon B nitrogen of nitrogen C sulfur trioksida of sulphur trioxide D karbon dioksida of carbon dioxide 3. Reaction type: Molecular representation: Raspberry ketone, used to give food a raspberry or blueberry flavor, is composed of by mass carbon. How many grams of carbon are in a sample of this flavoring? A chemist is using 343 milliliters of a solution of acid and water. If of the solution is acid, how many milliliters of acid are there? Round your answer to euestion 9 the nearest tenth. milliliters CATES OF MATTER 1. Hydrogen, and oxygen. gases are placed in a container at the same temperature. Using Graham's law of diffusion, calculate the relative rate of difrusion of hydrogen compared to oxygen. ' n Vloeistof waarin ' n stof sal oplos 9) (10 points) Which weighs more, a mole of copper or a mole of aluminum (hint: write down how much a mole of each one weighs)? 8) (10 points) Which contains more atoms, a mole of copper or a mole of gold? (hint: write down the number of atoms in each one)? 7. (b) Calculate the molarity of this solution. (Relative atomic masses: ) In an experiment, 0.635 g of Cu dissolves completely in of . (a) Write the ionic equation for the reaction involved. (b) State TWO other observable changes in this experiment. (c) Calculate the concentration of copper(II) ions and that of silver ions in the resultant solution (Relative atomic mass: ) SECTION B (40 MARKS) Answer ALL the questions in this section 11. (a) Liquid A decomposes isothermally by second order kinetics in a constant volume batch reactor such that is converted in a 5-minute run. Determine how much longer it will take to attain conversion. (8 ma
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