Chemistry concepts and calculations
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A coal with the following composition is burned at a rate of 15000 kg per hour i
A coal with the following composition is burned at a rate of 15000 kg per hour in a power plant. The excess air used was 20%. Carbon - 66.10%, Hydrogen- 6.03%, Oxygen -11.91%, Nit…
A coal with the following composition is burned at a rate of 15000 kg per hour i
A coal with the following composition is burned at a rate of 15000 kg per hour in a power plant. The excess air used was 20%. Carbon - 66.10%, Hydrogen- 6.03%, Oxygen -11.91%, Nit…
A coal with the following composition is burned at a rate of 15000 kg per hour i
A coal with the following composition is burned at a rate of 15000 kg per hour in a power plant. The excess air used was 20%. Carbon - 66.10%, Hydrogen- 6.03%, Oxygen -11.91%, Nit…
A coal with the following composition was burnt in a power plant with 23.2 % exc
A coal with the following composition was burnt in a power plant with 23.2 % excess air. Partial pressure of water vapor in the flue gases determines the dew point of the flue gas…
A coal-burning power plant that uses an evaporating water tower to cool the gene
A coal-burning power plant that uses an evaporating water tower to cool the generated steam has the following characteristics: uses about 2,000 metric tons/day of bituminous coal,…
A coal-fired power plant bums 230 metric tons of coal that is 0 93percentage S b
A coal-fired power plant bums 230 metric tons of coal that is 0 93percentage S by mass. How many metric tons of CaSO_4 could be produced in a limestone scrubber system if all of t…
A coal-fired power plant burns bituminous coal with the composition given in the
A coal-fired power plant burns bituminous coal with the composition given in the table below. Currently the power plant operates at a 33% efficiency and delivers 10,000 MWH (megaw…
A coffe cup calorimeter contains 480 grams of water at 25 C 380 grams of water a
A coffe cup calorimeter contains 480 grams of water at 25 C 380 grams of water at 53.5 C is added 525 grams of water at 65.5 C is added Assuming the heat absorbed by the styrofoam…
A coffe cup calorimeter contains 50.0 g of water at 60.51•c . A 12.4 g piece of
A coffe cup calorimeter contains 50.0 g of water at 60.51•c . A 12.4 g piece of graphite at 24.21•c is placed in the calorimeter. The final temp of water and the carbon is 59.02•c…
A coffee cup calorimeter can be used to investigate the \"cold pack reaction\",
A coffee cup calorimeter can be used to investigate the "cold pack reaction", the process that occurs when solid ammonium nitrate dissolves in water: NH_4NO_3(s) rightarrow NH_4^+…
A coffee cup calorimeter having a heat capacity of 451 J/degrees Celsius was use
A coffee cup calorimeter having a heat capacity of 451 J/degrees Celsius was used to measure the heat evolved when 0.0300 mole of NaOH(s) was added to 1000 mL of 0.0300 M HNO3 ini…
A coffee cup calorimeter is prepared, containing 100.000 g of water (specific he
A coffee cup calorimeter is prepared, containing 100.000 g of water (specific heat capacity = 4.184 J/g K) at initial temperature 80.000 C. A salt weighing 2.394 g is quickly adde…
A coffee cup calorimeter was used to conduct a neutralization reaction. A 100.0
A coffee cup calorimeter was used to conduct a neutralization reaction. A 100.0 mL sample of a 0.8500 M KOH solution was added to 100.0 mL of a 0.8404 M HBr sample. Prior to mixin…
A coffee cup calorimeter was used to measure the heat of reaction - the change i
A coffee cup calorimeter was used to measure the heat of reaction - the change in enthalpy that occurs when a solid dissolves in water. A 10.0 g sample of an ionic compound with a…
A coffee cup calorimeter was used to measure the heat of reaction - the change i
A coffee cup calorimeter was used to measure the heat of reaction - the change in enthalpy that occurs when a solid dissolves in water. A 10.0 g sample of an ionic compound with a…
A coffee cup calorimeter was used to measure the heat of reaction - the change i
A coffee cup calorimeter was used to measure the heat of reaction - the change in enthalpy that occurs when a solid dissolves in water. A 10.0 g sample of an ionic compound with a…
A coffee cup calorimeter was used to measure the heat of solution-the change in
A coffee cup calorimeter was used to measure the heat of solution-the change in enthalpy that occurs when a solid dissolves in water. A 10.0 g sample of an ionic compound with a m…
A coffee shop in Seattle wishes to determine the amount of caffeine in each 8oz
A coffee shop in Seattle wishes to determine the amount of caffeine in each 8oz cup of coffee they sell. In general cup of coffee is thought to contain 100 mg-150mg of caffeine. U…
A coffee-cup calorimeter containing 100 mL of H 2 O is used. The initial tempera
A coffee-cup calorimeter containing 100 mL of H2O is used. The initial temperature of the calorimeter is 23.0 oC. If 2.60g of CaCl2 is added to the calorimeter, what will be the f…
A coffee-cup calorimeter contains 140.0 g of water at 25.3 degree C. A 124.0-g b
A coffee-cup calorimeter contains 140.0 g of water at 25.3 degree C. A 124.0-g block of copper metal is heated to 100.4 degree C by pulling ii in a beaker of boiling water. The sp…
A coffee-cup calorimeter contains 150.0 g of water at 25.2 C. A 122.0 g block of
A coffee-cup calorimeter contains 150.0 g of water at 25.2 C. A 122.0 g block of copper metal is heated to 100.4 C by putting it in a beaker of boiling water. The specific heat of…
A coffee-cup calorimeter contains 150.0 g of water at 25.3 degreesCelsius. A 124
A coffee-cup calorimeter contains 150.0 g of water at 25.3 degreesCelsius. A 124 -g block of copper is heated at 100.4 degreesCelsius by putting it into a beaker of boiling water.…
A coffee-cup calorimeter contains 150.0g of water at 25.1C. A 121g block of copp
A coffee-cup calorimeter contains 150.0g of water at 25.1C. A 121g block of copper metal is heated to 100.4C by putting it in a beaker of boiling water. The specific heat of Cu(s)…
A coffee-cup calorimeter contains 50.0g ofwater at 60.51 degree C. A 12.4 g piec
A coffee-cup calorimeter contains 50.0g ofwater at 60.51 degree C. A 12.4 g piece of graphite at 24.21 degreeC is placed in the calorimeter. The final temperature of the waterand …
A coffee-cup calorimeter is used to determine the heat of reaction for the react
A coffee-cup calorimeter is used to determine the heat of reaction for the reaction of compound A with compound B. A(aq) + B(aq) C(aq) When we add 17.94 mL of 0.169 M A at 24.322°…
A coil with N = 10, an area of 0.15 m^2, and total resistance of 15 ohm. spins (
A coil with N = 10, an area of 0.15 m^2, and total resistance of 15 ohm. spins (the angular velocity points up in the figure) in a magnetic field of 0.5 Teslas directed to the rig…
A coin dealer, offered a rare silver coin, suspected that it might be a counterf
A coin dealer, offered a rare silver coin, suspected that it might be a counterfeit nickel copy. The dealer heated the coin, which weighed 18.0 g to 100
A coin dealer, offered a rare silver coin, suspected that it might be a counterf
A coin dealer, offered a rare silver coin, suspected that it might be a counterfeit nickel copy. The dealer heated the coin, which weighed 18.0 g to 100
A coin dealer, offered a rare silver coin, suspected that it might be a counterf
A coin dealer, offered a rare silver coin, suspected that it might be a counterfeit nickel copy. The dealer heated the coin, which weighed 18.0 g to 100
A coin dealer, offered a rare silver coin, suspected that it might be a counterf
A coin dealer, offered a rare silver coin, suspected that it might be a counterfeit nickel copy. The dealer heated the coin, which weighed 18.0 g to 100
A coin is tossed repeatedly, and a payoff of 2n dollars is made, where n is the
A coin is tossed repeatedly, and a payoff of 2n dollars is made, where n is the number of the toss on which the first Head appears. So TTH pays $8, TH pays $4 and H pays $2. Write…
A cold air mass from Canada has a temperature of 10 degrees Fahrenheit and a rel
A cold air mass from Canada has a temperature of 10 degrees Fahrenheit and a relative humidity of 90%. This air mass is moving southeast while another air mass is moving from the …
A cold pack purchased at a drugstore is a packet of water with a container of sa
A cold pack purchased at a drugstore is a packet of water with a container of salt inside. When the inner salt packet is broken, the ingredients are mixed. If a cold pack was init…
A colleague and I were speaking about browsers (using a browser control object i
A colleague and I were speaking about browsers (using a browser control object in a project), and it appears as plain as day that all browsers (Firefox, Chrome, IE, Opera) display…
A colleague of mine lives on a small pond. After the water has frozen he often i
A colleague of mine lives on a small pond. After the water has frozen he often ice skates on the pond. One morning after a light snow he started to shovel off the snow so he could…
A colleague wants to test some software within a VM (Virtual Machine) environmen
A colleague wants to test some software within a VM (Virtual Machine) environment. He wants to test it on a computer that is not hooked up to the internet. It runs Win XP SP3. Win…
A combinational logic circuit which has one output Z and 4-bit input ABCD repres
A combinational logic circuit which has one output Z and 4-bit input ABCD representing a binary number. Z should be 1 if and only if the input ABCD represents an odd number greate…
A combustion devise was used to determine the empirical formula for a compound t
A combustion devise was used to determine the empirical formula for a compound that only contains C, H, and O. A 0.6349 g sample of the unknown produced 1.603 g of CO2 and 0.2810 …
A combustion devise was used to determine the empirical formula for a compound t
A combustion devise was used to determine the empirical formula for a compound that only contains C, H, and O. A 0.6349 g sample of the unknown produced 1.603 g of CO2 and 0.2810 …
A combustion devise was used to determine the empirical formula for a compound t
A combustion devise was used to determine the empirical formula for a compound that only contains C, H, and O. A 0.6349 g sample of the unknown produced 1.603 g of CO2 and 0.2810 …
A combustion devise was used to determine the empirical formula for a compound t
A combustion devise was used to determine the empirical formula for a compound that only contains C, H, and O. A 0.6349 g sample of the unknown produced 1.603 g of CO2 and 0.2810 …
A combustion reaction involves the reaction of a substance with oxygen gas. The
A combustion reaction involves the reaction of a substance with oxygen gas. The complete combustion of any hydrocarbon (binary compound of carbon and hydrogen) produces carbon Com…
A combustion reaction involves the reaction of a substance with oxygen gas. The
A combustion reaction involves the reaction of a substance with oxygen gas. The complete combustion of any hydrocarbon (binary compound of carbon and hydrogen) produces carbon dio…
A combustion reaction of a hydrocarbon is defined as the reaction of the compoun
A combustion reaction of a hydrocarbon is defined as the reaction of the compound into carbon dioxide and water. CmHn(g) + (m+(1/4)n)O2(g) ---> mCO2 + (1/2)nH2O(l) 1. Demonstra…
A combustion reaction releases 783 kJ of energy at 25 degree C (a) Calculate the
A combustion reaction releases 783 kJ of energy at 25 degree C (a) Calculate the change in entropy of the surroundings, Delta S_ (b) Calculate the change in entropy if the reactio…
A combustion reaction releases 783 kJ of energy at 25degree C. Calculate the cha
A combustion reaction releases 783 kJ of energy at 25degree C. Calculate the change in entropy of the surroundings, delta S_surr. Calculate the change in entropy if the reaction i…
A commercial antacid tablet weighing 1.9564g is dissolved in excess HCl(aq) solu
A commercial antacid tablet weighing 1.9564g is dissolved in excess HCl(aq) solution. The concentration and volume of the HCl solution are .7222M and 25.00mL respectively. The sol…
A commercial file encryption program from the early 1990s used standard DES with
A commercial file encryption program from the early 1990s used standard DES with 56 key bits. In those days, performing an exhaustive key search was considerably harder than nowad…
A commercial water treatment system has a packed section that is 4 meters long w
A commercial water treatment system has a packed section that is 4 meters long with a 30 cm diameter and is packed with a void fraction of 0.4. The resin in the bed obeys a Langmu…
A commercially available hydrated chromium chloride has the composition CrC13. 6
A commercially available hydrated chromium chloride has the composition CrC13. 6H20. Boiling an aqueous solution of the chromium chloride causes the solution to become violet, and…
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