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Hogar Banco de preguntas Química Archive 2025 January 31

Chemistry Questions from Jan 31,2025

Browse the Chemistry Q&A Archive for Jan 31,2025, featuring a collection of homework questions and answers from this day. Find detailed solutions to enhance your understanding.

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The presence of bonds between some of the carbon atoms in the hydrocarbon chains of a fat influences whether it is a solid or liquid at room temperature. In general, which of the following is an accurate description of the chemical structure of fatty acids? A three carbon chain where each carbon is bound to a hydroxyl group A hydrocarbon chain with a terminal carboxyl group Three hydrocarbon chains bound to each of the three carbons of a glycerol molecule The main chemical characteristic that lipids share is that they are in water. At a certain temperature this reaction follows first-order kinetics with a rate constant of : Suppose a vessel contains at a concentration of 0.380 M . Calculate how long it takes for the concentration of to decrease by . You may assume no other reaction is important. Round your answer to 2 significant digits. At a certain temperature the rate of this reaction is second order in with a rate constant of .s . Suppose a vessel contains at a concentration of 0.720 M . Calculate how long it takes for the concentration of , to decrease to 0.043 M . You may assume no other reaction is important. Round your answer to 2 significant digits. Disney+ spotify Hulu a) Amazon Homepage outlook mail ALEKS Green and White H... Blackboard Courses O Kintios End Ephtith Using first- and second-order integrated rate laws Sydney At a certain temperature the rate of this reaction is first order in with a rate constant of : Suppose a vessel contains at a concentration of 0.510 M . Calculate the concentration of in the vessel 0.210 seconds later. You may assume no other reaction is important. Round your answer to 2 significant digits. 10 2. Electrolysis is a process in which water is separated into its component gases, hydrogen and oxygen. Using the information below, how much hydrogen is produced in the reaction? g) Nitric acid is a key industrial chemical, largely used to make fertilizers and explosives. The first step in its synthesis is the oxidation of ammonia. In this reaction, gaseous ammonia reacts with dioxygen gas to produce nitrogen monoxide gas and water. Suppose a chemical engineer studying a new catalyst for the oxidation of ammonia reaction finds that 747 . liters per second of dioxygen are consumed when the reaction is run at and the dioxygen is supplied at 0.82 atm. Calculate the rate at which nitrogen monoxide is being produced. Give your answer in kilograms per second. Round your answer to 2 significant digits. The reform reaction between steam and gaseous methane produces "synthesis gas," a mixture of carbon monoxide gas and dihydrogen gas. Synthesis gas is one of the most widely used industrial chemicals, and is the major industrial source of hydrogen. Suppose a chemical engineer studying a new catalyst for the reform reaction finds that 600 . liters per second of methane are consumed when the reaction is run at and the methane is supplied at 0.77 atm. Calculate the rate at which dihydrogen is being produced. Give your answer in kilograms per second. Round your answer to 2 significant digits. Consider this reaction: At a certain temperature it obeys this rate law. rate Suppose a vessel contains at a concentration of 1.44 M . Calculate how long it takes for the concentration of order intcgrated rate laws You may assume no other reaction is important. Round your answer to 2 significant digits.
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