A political candidate fighting for a smoke-free environment conducts an experiment in a room containing 1400 cubic feet of air that is initially free of carbon monoxide. Beginning at time t=0, cigarette smoke containing 4% carbon monoxide is introduced into the room at the rate of 0.1 cubic foot per minute, and the well-circulated mixture is allowed to leave the room at the same rate. If carbon monoxide levels in the air reach 0.012%, it is harmful to the human body. Find the time at which this unhealthy level is reached.

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Calculate the solubility at 25 °C of PbCO, in pure water and in a 0.0130M Pb (NO₂), solution. You'll find K, data in the ALEKS Data tab. Round both of your answers to 2 significant digits. solubility in pure water: solubility in 0.0130 M Pb(NO₂) solution: 20 0²- X OxO 8 G dlo Solubility product constants (Ksp) Hg₂(CN)2 H9₂/2 HgS Hg₂SO4 PbBr₂ PbClz PbCO3 PbCrO4 PbF₂ pbl₂ Pb(10₂)2 www.a 5.00x10-40 5.2x10-29 4.00×10-54 6.5x10-7 6.60x10-5 1.70x10-5 7.40x10-14 2.00x 10-14 3.3x10-8 9.8×10-9 3.69x10-13. 78

A chemical engineer must calculate the maximum safe operating temperature of a high-pressure gas reaction vessel. The vessel is a stainless-steel cylinder that measures 43.0cm wide and 51.6cm high. The maximum safe pressure inside the vessel has been measured to be 5.20MPa. For a certain reaction the vessel may contain up to 9.03kg of chlorine pentafluoride gas. Calculate the maximum safe operating temperature the engineer should recommend for this reaction. Write your answer in degrees Celsius.

Solid NH4I ammonium iodide (which is always considered to be in excess) is introduced into an initially empty container at a constant temperature of 427°C. An equilibrium is quickly established and the total pressure (PT) is then 0.9 bar. NHẠI (s) 2 NH3(g) + HI(g) Express the equilibrium constant K' of this reaction as a function of PT a. Express the equilibrium constant K' of this reaction as a function of PT- The answer is PNH, PHI - - ( 2 2 P K' || po2 p°2 2P°, Can you explain why we get (p/2)^2?

12:27 12-2 Analyzing Data... NAME Energy (kJ) NAME 1000 Many chemical reactions involve a change in energy. When the energy of the reactants is greater than the energy of the products, the reaction gives off heat and is exothermic. When the energy of the products is greater than that of the reactants, the reaction must absorb energy from the surroundings to occur and is endothermic. If the intermediate stage (the activated complex) is of a higher energy, then the reaction can only take place if the reactants are given an initial energy input (the activation energy). The graph shows energy diagrams that indicate how the energy changes as three reactions occur. Energy Changes for Three Reactions 800 600 Dashboard 400 200 DATE 0 ANALYZING DATA Interpret Energy Diagrams CLASS Direction of reaction 000 000 Calendar DATE .5GE 14 A D Copyright © Savvas Learning Company LLC. All Rights Reserved. Savvas is not responsible for any modifications made by end users to the content posted in its…