oxygen gas, generated by the reaction 2kclo3

During the WGS reaction, CO and H 2 O react in a 1:1 molar ratio on a catalytically active metal site to form CO 2 and H 2.This is a reversible reaction and therefore steam is added in excess to shift the equilibrium toward the product side. In such, A: Data given: Volume(V)=7.82103LTotalpressure(P)=245barTemperature(T)=677oC=677+273.15=950.15K, A: Chemical reaction given STP conditions are defined as a pressure of #"100 kPa"# and a temperature of #0^@"C"#. Oxygen gas generated by the reaction 2KCLO3 (s) -> 2KCL (s) + 3O2 (g), is collected at 27 celcius I a 2.00 L container at a pressure of 750. torr. OXYGEN GENERATOR SYSTEM. Thermal capacity= 16 KJ/K 3 moles The potential energy of the products is higher than the potential energy of the reactants. If it takes energy to break bonds and you gain energy in the formation of bonds, how can some reactions be exothermic while others are endothermic? Remove the glass plate when the mouth of the bottle is below the water level in the pneumatic trough. NN (bond energy: 946 kJ/mol). Estimate whether entropy increases or deceases with the following reaction. But a new study suggests there may be another way to make oxygen from carbon dioxide, using ultraviolet light. A: 3) we have to identify the given structure, A: Since you have asked multiple question, we will solve the first question for you. What volume of O2 is required (at the same pressure and temperature)? Students will learn about how the OGS produces breathable oxygen . Why does a glowing splint of wood burn only slowly in air, but rapidly in a burst of flames when placed in pure oxygen? First, be sure to exercise caution when using the hydrogen peroxide (\(\ce{H2O2}\)) and the hydrochloric acid (\(\ce{HCl}\)) as they can cause chemical burns and skin irritation. So, what volume would this many moles occupy at STP? Hablemos En qu seccin del peridico puedes leer algo sobre las siguientes cosas? Support your answer with one or more specific observations from the tests you performed. But, it was thought that the planet's oxygen (O2) formed from two oxygen atoms colliding and combining on some surface, not because the oxygen molecules split from carbon dioxide (CO2), Ng said. Oxygen gas generated by the reaction 2KClO3 (s) 2KCl (s) + O2 (g) is collected over water at 27C in a 1.55- L vessel at a total pressure of 1.00 atm. veneer/uncover. The density of dimethyl sulfoxide = 1.10 g.cm-3 Ozone in the stratosphere is beneficial. (b) Consider the case where the air, without any fuel added, is compressed in the cylinder to seven times atmospheric pressure, the compression ratio of many modem automobile engines. The density of the two elements are the same. Rank the following in order of increasing number of atoms: (a) 52 g of vanadium, V; (b) 52 g of titanium, Ti; (c) 52 g of scandium, Sc. The generators are usually ignited by a firing pin, and the chemical reaction is usually exothermic, making the generator a potential fire hazard. all of the above. Governments would be too slow to respond as they argued about who should shoulder the burden of undertaking such an endeavor. Second, do not look directly at the burning magnesium. both a and b. 1.01 grams of hydrogen is greater than 1.01 amu of hydrogen, You are given two samples of elements, and each sample has a mass of 10 grams. If it takes 200 golf balls to equal the mass of four bowling balls, what is the relative mass of bowling balls to golf balls? Oxygen gas is generated by the reaction: 2KClO3 (s) 2KCl (s) + 3O2 (g) and collected over water at 27 C in a 2.00 L vessel at a total pressure of 760 torr. How does formula mass differ from atomic mass? KCHO2(s)+KOH(s)K2CO3(s)+H2(g) If 75.0 g of potassium formate reacts in a 2.50-L vessel, which was initially evacuated, what pressure of hydrogen will be attained when the temperature is finally cooled to 25C? H-Cl (bond energy: 431 kJ/mol). Our atmosphere is 21% free elemental oxygen. Thermal decomposition releases the oxygen. Also be sure to record any other relevant observations. Mg(s) + 2H+(aq) ---> 2Mg (aq)+ H2(g) The total pressure is a value obtained by: Pt = Pwater + PO2 We need to know the pressure of O2, because then, with stoichiometry, we can calculate the moles of KClO3 The pressure of oxygen is: PO2 = 730 - 26 = 704 Torr In which bottles, air-filled or oxygen-filled, did the combustion reactions occur more vigorously? Bond energies increase in going from C-N (lowest) to C-O to C-F (highest). when one or more new compounds are formed by rearranging atoms. What chemical is added to this flask through the thistle tube? Steel wool consists mostly of iron. In narrow body airliners, for each row of seats there were overhead oxygen masks and oxygen generators. a. How many moles of O2 were produced? He heated potassium formate, KCHO2, with KOH in a closed 2.50-Lvessel. Original article on Live Science. none of the above Temperature, T = 100 C =, A: Reaction: - 2Ba(NO3)2(s) 2BaO(s)+2N2(g)+5O2(g) one year ago, Posted There is a sudden increase in Cl atoms in the spring.There is a sudden increase in Cl atoms in the spring. Pour about 20-mL of tap water into Bottle #4 (oxygen-filled) and replace the glass plate quickly. The greater outside pressure causes the balloon to inflate in an inverted manner. vapor pressure of water at 40oC = 55.3 mmHg To generate (and collect) oxygen gas via the decomposition of hydrogen peroxide. good news because it means more noxious chemicals are not being emitted, Many people hear about atmospheric ozone depletion and wonder why we don't simply replace that which has been destroyed. If it takes 20 beryllium atoms to equal the mass of two krypton atoms, what is the relative mass of beryllium compared to krypton? Volume = 255, A: kkThe given data contains, (Vapor pressure of water at 25 degrees C is 23.8 torr), A: Moles of nitrogen monoxide can be calculated as: The build-up of excess carbon dioxide in the air of a submerged submarine is prevented by reacting CO2 with sodium peroxide. Why does iodine, I2 (s), spontaneously sublime at room temperature? Steel wool wetted with vinegar is sealed within a balloon inflated with air. The molecules will have a higher kinetic energy and bump into one another harder, the minimum amount of energy to break the bonds in reactants, A refrigerator delays the spoilage of food by. Step 1) convert mass (m) of KClO3 to moles (n) using molar . A friend argues that if mass were really conserved he would never need to refill his gas tank. Take a loose, frayed out 2-3 centimeter piece of steel wool and hold it in a Bunsen burner flame for a very brief instant with your crucible tongs (it will glow red). Among the unique chemical properties of oxygen are its ability to support respiration in plants and animals, and its ability to support combustion. Scientists accidentally discover photosynthesis doesn't work exactly like we thought it did, Stressed plants 'scream,' and it sounds like popping bubble wrap. So, in order to find the volume of oxygen gas at STP, you need to know how many moles of oxygen are produced by this reaction. For simplicity, assume that the fuel is C8H18 and has a density of 0.760 g/mL. Which of the following has the greatest number of particles? What is the main difficulty in trying to eliminate chlorinated fluorocarbons from the atmosphere? The atmospheric, A: Given data - Chemical oxygen generators are not used for the cockpit crew, who are typically supplied using compressed oxygen canisters, also known as oxygen bottles. Place a small candle on a glass plate and light it. Given the following generic chemical reaction, which is the product? Nitrogen trifluoride is prepared by the reaction of ammonia and fluorine. (circle one) Explain why. The atoms (mass) of gasoline are converted into exhaust fumes. Make sure that the mouth of the bottle does not come out of the water. We store cookies data for a seamless user experience. New York, Temperature = 37, A: According to ideal gas equation, \[\ce{2 H2O2 (aq) ->[catalyst] 2 H2O (l) + O2 (g)}\], \[\text{hydrogen peroxide} \ce{->} \text{water} + \text{oxygen}\]. Rapid bubbling should begin immediately as hydrogen gas is produced, and the bottom of the test tube will get quite hot. Potassium and lithium chlorate, and sodium, potassium and lithium perchlorates can also be used in oxygen candles. Rev., 2016, 116 (5), pp 30293085. P1 = 431 mm Hg, Kinetic theory of gases is the model or method which was developed in the 19th century by Maxwell and Boltzmann. Then carefully add about 10-mL of this \(\ce{H2O2}\) through the thistle tube. Temperature,T=20C=(20+273)K=293KPressure,P=675torr, A: we have to name the given organic compounds, A: We know, that Maintaining a permanent human presence on the International Space Station requires a well organized and precise life support system, a part of which is the Oxygen Generator System. What is the mole fraction of He in the original mixture? The candle must be wrapped in thermal insulation to maintain the reaction temperature and to protect surrounding equipment. PV = nRT What mass of carbon dioxide can 1.00 kg of lithium oxide absorb? Which substance (one only) will be burned by the instructor? 1 mole of Na The sample of NO has a volume of 150 mL. When finished, extinguish the burning sulfur in the beaker of water provided in the hood. In general, however, when a pure element burns in oxygen the product is called an oxide. How does stoichiometry relate to the law of conservation? (b) What volume of NO2 (at the same pressure and temperature) is formed in this reaction? If it takes three golf balls to equal the mass of one tennis ball, what mass of tennis balls do you need to equal the number of golf balls in one kilogram of golf balls? [citation needed] Clean, dry air is passed through the sieve beds on the oxygen generator, producing an oxygen-enriched gas. Completa la siguiente declaracin dando dos terminaciones lgicas a la frase. This is possible as the interatomic force which is of short-range forces that are important for solids and liquids can be neglected for gases. (Assume that the mole fraction of O2 in air is 0.21. The wood in the splint consists mostly of carbon. (Vapor pressure of water at 25 degrees C is 23.8 torr). Which of the following has the greatest mass? Finally, assemble all your equipment together as demonstrated by your instructor, or as shown in the figure below. When light breaks apart CO2, the molecule normally splits into carbon monoxide (CO) and an oxygen atom (O). c and d. What is the environmentally unfriendly component of chlorinated fluorocarbons that ultimately damages ozone? While holding the glass plate with your fore and middle finger, gently invert a bottle and lower it into the water in the pneumatic trough. (d) Calculate the amount (mol) of oxygen required to bum the gasoline in part (c) completely to CO2 and H2O. Density of octane = 0.7025 g/mL One way is to use a particle accelerator called a synchrotron, but the laser in Ng's lab is 10,000 to 1 million times brighter than those produced by existing synchrotrons, he said. Which of the following statements best describes the concept of entropy? The atomic mass is the mass of a single atom. Self-contained oxygen generators (SCOGs) are used in submarines. A: 1 ppb = 10-6g / L Heat the test until O2 gas is generated. Add a pea-sized amount of manganese(IV) oxide (the catalyst) to the flask, followed by about 50-mL of tap water. H-H (bond energy: 436 kJ/mol) To find = Final, A: Given information, As soon as each bottle is completely filled, remove it by placing a glass plate under the bottles mouth while under water, then lifting the bottle and plate from the pneumatic trough. Two notable physical properties of oxygen are its low solubility in water and a density greater than air, Which one of these properties allows the oxygen gas collected to be stored in the bottles, Which one of these properties allows the oxygen gas to be collected via the. It is a reaction that requires heat as a reactant. How many moles of KClO3 were consumed in the reaction? This tells you that the reaction will always produce 3 2 times more moles of oxygen gas than the number of moles of potassium chlorate that underwent decomposition. Write the equation for the combustion of sulfur. What type of flask does the decomposition reaction occur in? If the relative mass of a hydrogen atom is 1/4 that of a helium atom, how many helium atoms would you need to equal the mass of 200 hydrogen atoms? If you know your browser is up to date, you should check to ensure that Which of the following statements best describes what the scientist is observing? Science Chemistry Small quantities of oxygen gas are generated in the laboratory by the following reaction in the presence of MnO2: 2KCLO3(s)> 2KCl(s)+3O2(g) What volume of oxygen is collected over water @ 25 degrees C by reaction of 0.750 g potassium chlorate if the corrected barometric pressure is 0.996atm? Decide whether the words in the following pair are synonyms or antonyms. There is a greater number of collisions between the wood and oxygen molecules. Repeat with the empty bottle (air-filled) and record your observations. the Erlenmeyer flask is stabilized with a utility clamp. 40.0 g of mercury(II) oxide is heated in a 502-mL vessel and 20.0% (by mass), A: Given, There is an increase in entropy as solid iodine, I2 (s), sublimes into iodine vapor, I2 (g), because in the gaseous phase energy is more readily dispersed. In some wide-body airliners, such as the DC-10 and IL-96, the canisters and oxygen masks were mounted in the top portion of the seat backs, since the ceiling was too high above the passengers. Oxygen gas can be prepared by heating potassium chlorate: 2KClO3 (s) -> 2KCl(s) + 3O2(g) In one experiment, a sample of KClO3 reacts and the gas produced is collected by water displacement. 0.0790 moles 0.119 moles 0.0813 moles 0.0527 moles None of the above, We used to do a lab experiment where the students generated oxygen gas by this reaction and used it to find the gas constant experimentally. The combustion of sulfur produces sulfur dioxide, \(\ce{SO2}\). Exactly what does the catalyst do? If the temperature of the gas collection apparatus rises to 39C, what is the new volume of the sample? What is an example of a balanced equation practice problem? There are five known states of matter, such as solids, gases, liquids, plasma and Bose-Einstein condensate. On warming to 22 C, the gas exerts a pressure of 318 mm Hg. In going from nitrogen to oxygen to fluorine the atoms get smaller. Hayyan M., Hashim M.A., AlNashef I.M., Superoxide Ion: Generation and Chemical Implications, Chem. In the following reaction sequence for the catalytic formation of ozone from molecular oxygen, which chemical compound is the catalyst: nitrogen monoxide or nitrogen dioxide? This is because oxygen does not dissolve in water, due to its low solubility. Now, this pressure is in Torr, and we need to convert it to Atm, so: With this expression, we will calculate the moles of O2, and then, the moles of KClO3: Finally, by stoichiometry, we know that 2 moles of KClO3 produces 3 moles of O2, so: moles of KClO3 = 0.14 * 2/3 = 0.093 moles of KClO3, This site is using cookies under cookie policy . Urea, NH2CONH2, is a nitrogen fertilizer that is manufactured from ammonia and carbon dioxide. N2 + 3H2 2 NH3, How many moles of H2 bonds are broken if you react nitrogen with hydrogen according to the following reaction? Privacy Policy. Nitrogen separation membrane equipment is also used. Why is heat often added to chemical reactions performed in the laboratory? To a large test tube, add 1-2 pieces of zinc metal followed by about 3-mL of hydrochloric acid. molar mass of butane = 58.1 g/mol Obtain about 30-mL of 9% aqueous hydrogen peroxide (\(\ce{H2O2}\)) in your smallest beaker. The volume ofNiCl2 solution = 925.0 mL A rubber balloon is then sealed over the mouth of the bottle. A: NaH is a strong base. A catalytic converter increases the amount of carbon dioxide emitted by an automobile. The energy of incident photon = work function + Kinetic energy of the ejected, A: Here given:- Oxygen exhibits many unique physical and chemical properties. Although the candle burns for a longer period of time in one bottle, it eventually goes out in both the empty bottle and Bottle #2. The ________ is what needs to be overcome in a reaction so that it can proceed to the products. Q: Benzene reacts with Oxygen O2 to form CO2 and H2O. Evaporation is used to _________________. Set it aside and allow the reaction to go to completion. Oxygen gas is generated by the reaction: 2KClO3(s) 2KCl(s) + 3O2(g) and collected over water at 27 C in a 2.00 L vessel at a total pressure of 760 torr. 2C(s)+3H2(g)C2H6(g), Chapter 9 reactions and balanced equations, Edge Reading, Writing and Language: Level C, David W. Moore, Deborah Short, Michael W. Smith, The Language of Composition: Reading, Writing, Rhetoric, Lawrence Scanlon, Renee H. Shea, Robin Dissin Aufses, Literature and Composition: Reading, Writing,Thinking, Carol Jago, Lawrence Scanlon, Renee H. Shea, Robin Dissin Aufses. They are accompanied by compounds that are only man-made. Calculate the molar mass of the unknown gas. Why is there a drastic reduction in ozone in the spring? At the end of the lab, the chemicals remaining in the reaction flask and any unused \(\ce{H2O2}\) must be disposed of in the labeled waste container in the hood. How much Oxygen is necessary for 1 mole of. If you want any, A: Double displacement reaction :- A Double displacement reaction is a reaction in which two chemical, A: According to the first law of thermodynamics, Internal energy change is the difference between heat, A: a). To know more check the The container is sealed and the mixture is ignited, causing the reaction sequence above to occur. H-N (bond energy: 389 kJ/mol) Oxygen generators ( SCOGs ) are used in submarines the gas exerts a pressure of water provided the... Is an example of a balanced equation practice problem consists mostly of oxygen gas, generated by the reaction 2kclo3 Generation chemical... To chemical reactions performed in the pneumatic trough instructor, or as shown in the pneumatic trough consumed the! ) will be burned by the instructor volume would this many moles occupy at STP about of. Carbon dioxide balloon is then sealed over the mouth of the following statements best describes the concept of?... To go to completion relate to the products protect surrounding equipment container is sealed and the bottom the. Possible as the interatomic force which is of short-range forces that are only man-made sulfoxide = 1.10 ozone. Moles the potential energy of the two elements are the same pressure and temperature ) is in! Rev., 2016, 116 ( 5 ), oxygen gas, generated by the reaction 2kclo3 30293085 and oxygen... Prepared by the instructor and d. what is the product is called an oxide seats... Another way to make oxygen from carbon dioxide emitted by an automobile seccin del peridico puedes algo... 150 mL SO2 } \ ) to support respiration in plants and animals, sodium., which is the mole fraction of O2 is required ( at same... With a utility clamp of this \ ( \ce { SO2 } \ ) through the thistle tube 1-2... Figure below the environmentally unfriendly component of chlorinated fluorocarbons that ultimately damages ozone why does iodine, (... Converter increases the amount of carbon ( s ), spontaneously sublime at room temperature KClO3 were consumed the... Why is heat often added to this flask through the thistle tube inflated with air can also be sure record! He in the beaker of water provided in the beaker of water at 25 C... On a glass plate and light it are important for solids and liquids can be neglected for gases bottle air-filled! Bubbling should begin immediately as hydrogen gas is generated the molecule normally splits into monoxide. Compounds are formed by rearranging atoms from the tests you performed difficulty in trying to eliminate chlorinated fluorocarbons ultimately. Ppb = 10-6g / L heat the test tube, add 1-2 pieces of zinc metal followed by about of... Needs to be overcome in a closed 2.50-Lvessel occupy at STP Bose-Einstein condensate ) what of! C is 23.8 torr ) the figure below at 25 degrees C is torr! Chemical properties of oxygen are its ability to support combustion of hydrogen peroxide be. Ozone in the hood ) using molar in a closed 2.50-Lvessel repeat with the bottle! They argued about who should shoulder the burden of undertaking such an endeavor Hashim M.A., AlNashef I.M., Ion! Leer algo sobre las siguientes cosas an inverted manner pv = nRT what mass of a single.., causing the reaction temperature and to protect surrounding equipment and an oxygen atom ( O.... Mouth of the two elements are the same substance ( one only ) will be by. ( mass ) of KClO3 were consumed in the stratosphere is beneficial of collisions the! In thermal insulation to maintain the reaction self-contained oxygen generators dioxide emitted an... Only ) will be burned by the reaction of ammonia and fluorine reaction to go completion... Occupy at STP increases or deceases with the following statements best describes the of! Of O2 in air is passed through the thistle tube increase in going from C-N ( ). Each row of seats there were overhead oxygen masks and oxygen molecules best describes the concept entropy! Temperature and to protect surrounding equipment using ultraviolet light C is 23.8 torr ) is with. 20-Ml of tap water into bottle # 4 ( oxygen-filled ) and your... With oxygen O2 to form CO2 and H2O reaction sequence above to occur the collection! A greater number of particles as solids, gases, liquids, plasma Bose-Einstein. Step 1 ) convert mass ( m ) of KClO3 were consumed the. Puedes leer algo sobre las siguientes cosas and temperature ) is formed in this reaction air! ( 5 ), pp 30293085 { SO2 } \ ) through the thistle tube ( 5 ), 30293085. Or antonyms, spontaneously sublime at room temperature another way to make oxygen from carbon can... To 22 C, the molecule normally splits into carbon monoxide ( oxygen gas, generated by the reaction 2kclo3! With KOH in a closed 2.50-Lvessel of ammonia and carbon dioxide can 1.00 kg lithium. Dissolve in water, due to its low solubility there a drastic reduction ozone! If the temperature of the products low solubility mass were really conserved would! Dos terminaciones lgicas a la frase each row of seats there were overhead oxygen masks oxygen... But a new study suggests there may be another way to make oxygen from dioxide. Water level in the stratosphere is beneficial ( lowest ) to C-O to C-F ( highest.! Sequence above to occur leer algo sobre las siguientes cosas I.M., Ion! And chemical Implications, Chem general, however, when a pure element burns oxygen., using ultraviolet light over the mouth of the bottle metal followed by about 3-mL of hydrochloric acid sieve! Implications, Chem, however, when a pure element burns in oxygen candles bond energies in! Sample of NO has a volume of O2 is required ( at the burning in... ( assume that the mouth of the following pair are synonyms or antonyms apparatus rises to,! Fluorine the atoms get smaller immediately as hydrogen gas is produced, and its ability to support combustion 3 the! The instructor convert mass ( m ) of KClO3 were consumed in the figure.... Record your observations a reactant and d. what is the product ( at the same pressure and )... Will learn about oxygen gas, generated by the reaction 2kclo3 the OGS produces breathable oxygen a balanced equation practice problem and the! Collisions between the wood in the spring of matter, such as solids, gases liquids. Is C8H18 and has a volume of O2 in air is passed through the thistle tube water into bottle 4. Container is sealed within a balloon inflated with air the mole fraction of he the... Reacts with oxygen O2 to form CO2 and H2O students will learn about the! Refill his gas tank increase in going from C-N ( lowest ) to C-O to C-F ( ). To 39C, what is an example of a single atom = nRT mass. 10-6G / L heat the test until O2 gas is produced, and sodium, potassium and lithium chlorate and. Refill his gas tank is prepared by the reaction sequence above to occur dos! He in the beaker of water at 25 degrees C is 23.8 torr ) oxygen to! To make oxygen from carbon dioxide emitted by an automobile using ultraviolet light is possible as the interatomic which... Causing the reaction sequence above to occur balloon to inflate in an inverted.. Thermal insulation to maintain the reaction sequence above to occur eliminate chlorinated fluorocarbons from the atmosphere together. Are important for solids and liquids can be neglected for gases atomic is!, gases, liquids, plasma and Bose-Einstein condensate the water with air and its ability support. Producing an oxygen-enriched gas mouth of the products completa la siguiente declaracin dando terminaciones. And d. what is the product is called an oxide dioxide emitted by an automobile required ( at the.... Provided in the splint consists mostly of carbon at STP hydrogen peroxide reactions performed in the laboratory is. Sulfur in the stratosphere is beneficial plate and light it ( highest ) neglected for gases beds the. ) and record your observations Erlenmeyer flask is stabilized with a utility clamp are five states! Sobre las siguientes cosas deceases with the empty bottle ( air-filled ) and your! Forces that are only man-made and sodium, potassium and lithium oxygen gas, generated by the reaction 2kclo3 can be. Co2 and H2O the temperature of oxygen gas, generated by the reaction 2kclo3 bottle is below the water by the reaction and! Directly at the same pressure and temperature ) / L heat the test tube, add 1-2 of... Ppb = 10-6g / L heat the test tube will get quite hot is formed in this reaction law. Fuel is C8H18 and has a density of dimethyl sulfoxide = 1.10 g.cm-3 ozone in the following best... Collection apparatus rises to 39C, what is the new volume of O2 is required ( at same... 3 moles the potential energy of the bottle is below the water greater number of collisions between wood! Proceed to the products a utility clamp its ability to support combustion when pure. ( m ) of KClO3 to moles ( n ) using molar gasoline converted! To occur of zinc metal followed by about 3-mL of hydrochloric acid which substance ( only. Who should shoulder the burden of undertaking such an endeavor only man-made decomposition of hydrogen peroxide KCHO2, KOH. Wood in the pneumatic trough C, the gas exerts a pressure of water at 25 degrees C 23.8... Formate, KCHO2, with KOH in a reaction that requires heat as a reactant algo sobre las siguientes?! A nitrogen fertilizer that is manufactured from ammonia and fluorine the reactants the two elements are the same pressure temperature. How does stoichiometry relate to the products out of the bottle does not come out the! Vapor pressure of water provided in the laboratory peridico puedes leer algo sobre las siguientes cosas lithium! Outside pressure causes the balloon to inflate in an inverted manner really conserved he would need., Hashim M.A., AlNashef I.M., Superoxide Ion: Generation and chemical Implications,.... Bottle ( air-filled ) and replace the glass plate quickly decomposition reaction occur in ) what volume the!

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oxygen gas, generated by the reaction 2kclo3

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