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- Classify the following processes according to their rates as very slow, slow, or fast: a.The melting of butter put into a hot pan b.The ripening of a piece of fruit stored at room temperature c.The cooking of a raw potato in a hot oven d.The melting of ice cube in a glass of cool water e.The combustion of gasoline in the engine of a carCoal gasification produces an easily-transportable, clean-burning combination of carbon monoxide and hydrogen from coal by reacting it with steam, like this: C(s) + H₂O(g) → CO(g) + H₂(g) - - Suppose an engineer decides to study the rate of this reaction. He prepares four reaction vessels with 95.3 g of solid carbon and 13.5 g of steam each. The volume and temperature of each vessel is shown in the table below. Arrange the reaction vessels in decreasing order of initial rate of reaction. In other words, select a "1" next to the vessel in which the engineer can reasonably expect the initial rate of reaction to be highest, a "2" next to the vessel in which the initial rate of reaction would be next highest, and so on. vessel volume temperature A B C D 5.0 L 5.0 L 5.0 L 5.0 L 360. °C 370. °C 390. °C 340. °C X initial rate of reaction ? ? ? ? ŚReaction 1: 47.2 seconds Reaction 2: 90.2 seconds Reaction 3: 93.1 seconds Reaction 4: 196.5 seconds Reaction 5: 78.4 seconds
- Sucrose (C₁2H₂2O₁1), which is commonly known as table sugar, reacts in dilute acid solutions to form two simple sugars, glucose and fructose, both of which have the formula C6H₁2O6. C₁2H₂2O11 + H₂O 2 C6H₁2O6 Time (min) [C₁₂H₂2O₁] (M) 0.316 0.274 0.238 0.190 0.146 a) Is the reaction first or second order? b) What is the value of the rate constant? c) What is the first half-life? 0 39 80 140 210Coal gasification produces an easily-transportable, clean-burning combination of carbon monoxide and hydrogen from coal by reacting it with steam, like this: C(s) + H₂O(g) → CO(g) +H₂(g) Suppose an engineer decides to study the rate of this reaction. He prepares four reaction vessels with 95.1 g of solid carbon and 12.3 g of steam each. The volume and temperature of each vessel is shown in the table below. Arrange the reaction vessels in decreasing order of initial rate of reaction. In other words, select a "1" next to the vessel in which the engineer can reasonably expect the initial rate of reaction to be highest, a "2" next to the vessel in which the initial rate of reaction would be next highest, and so on. vessel volume temperature A B C D 4.0 L 2.0 L 4.0 L 2.0 L 300, "C 310, "C 310 °C 330. "C X initial rate of reaction P ? ? ? G v VA 10-mm cube of copper metal is placed in 250 mL of 12 M nitric acid at 25°C and the reaction below occurs: Cu(s) + 4H+(aq) + 2NO3(aq) → Cu2+(aq) +2NO2(g) + 2H20(I) At a particular instant in time, nitrogen dioxide is being produced at the rate of 2.3 × 10^-4 M/min. AT this same instant, what is the rate at which hydrogen ions are being consumed in M/min? Report you answer with 5 places past the decimal
- Convert each "b" value from the three Graphs ln(Conc) to the Initial Concentration. Graph Two: y= -0.0048x -11.125 Graph Four: y= 161824x - 13.326 Graph Five: y= -0.0189x -10.903 **Note these are the y= mx-b equation from the linear graph, In(concentration) vs time. I don't know how to convert natural log value such as -11.125 to the initial concentration.5 ✓7 D ✔B ✓9 ✓ 10 ✓11 12 The human body burns glucose (C,H,O,) for energy according to this chemical reaction: CH₁₂0+60-6CO₂ + 6H₂0 The products of the reaction are carbon dioxide (CO₂) and water (H₂O). Interestingly, all of the carbon dioxide and much of the water exits the body through the lungs: on every breath, the average person exhales 500 ml. of air, which is typically enriched to 4% CO, and 5% water vapor by volume. In short, when a person loses weight by dieting, the weight that is lost actually departs his body as a gas, every time he exhales. Each kilogram of body fat lost requires exhaling about 2.8 kg of carbon dioxide. Calculate how many breaths it takes an average person to "exhale" 3.00 kg of fat. Round your answer to the nearest thousand. You'll need to know that the density of CO₂ is 2.0 kg/m³. 10 13 ? DCatalysts are substances that increase the rate of reaction but can be recovered unchanged at the end of the reaction. Catalysts can be classified as either homogeneous (same state as reactants) or heterogeneous (different state than reactants). Part A Platinum is used to catalyze the hydrogenation of ethylene: H₂(g) + CH₂CH₂(g) Chlorofluorocarbons (CFCs) catalyze the conversion of ozone (03) to oxygen gas (0₂): CFC(g) 203(g) 30₂(g) Magnesium catalyzes the disproportionation of hydrogen peroxide to produce water and oxygen: Mg(s) 2H₂O₂(aq) 2H₂O(1) + O₂(g) What type of catalysts are platinum, CFCs, and magnesium under these conditions? Drag the appropriate items to their respective bins. ▸ View Available Hint(s) platinum Homogeneous catalysts Submit CFCs magnesium. Pt(s) Reset Help Heterogeneous catalysts CH3CH3(g)
- Reaction 1 FeO(s) + CO(g) → Fe(1) + CO2(g) AG" > 0 Reaction 2: C(s) + CO2(g) → 2 CO(g) AGzn <0 Overall reaction: FeO(s) + C(s) → Fe(l) + CO(g) AG n < 0 Subm The chemical equations above represent the main reactions that occur during the production of Fe(l) under certain conditions. The overall reaction couples reactions 1 and 2, resulting in a < 0? thermodynamically favorable process. Which of the following best explains whether or not a particle diagram could represent how the coupling of reaction 1 and reaction 2 results in AG A particle diagram that represents the increase in the volume of gaseous product particles would be a good representation of how the coupling of reactions 1 and 2 results in a thermodynamically favorable process. A particle diagram that represents the decrease in the average kinetic energy of the particles would be a good representation of how the coupling of reactions 1 and 2 results in a thermodynamically favorable process. A particle diagram cannot represent…1. II II Time, Time, Time, [A], M [A], M [A], M S 1.00 0.78 0.61 0.47 0.37 0.22 0.14 0.08 1.00 0.75 0.50 0.25 0.00 0. 25 50 75 100 1.00 0.80 0.67 0.57 0.50 0.40 25 25 50 75 50 75 100 150 200 100 150 200 250 0.33 0.29 250 What is the approximate rate of reaction at t= 75 s for the (a) zero-order, (b) first-order, (c) second-order reaction?The major product/s that form/s during the nitration of benzenesulfonic acid is? Choose the correct answer from provided options /i OA. H®OS O2N O B. O2N. SO3H
