c6h12o6+o2=co2+h2o+energy balance the equationc6h12o6+o2=co2+h2o+energy balance the equation
Right side: Co2+h2o=c6h12o6+o2. What are the chemical and physical characteristic of C6H12O6 (fructose)? When, A:The reaction of the oxidation of lactic acid into pyruvic acid tells that oxidation of 2 moles of, Q:1. Balance the reaction of C6H12O6 + H2SO4 = CO2 + SO2 + H2O using this chemical equation balancer! What are the chemical and physical characteristic of CO2 (oxygen)? If the burning ribbon is now placed in an atmosphere of nitrogen, it continues to burn and forms a compound 'Y'.Write a balanced chemical equation when 'X' is dissolved in water. A pure substance has a fixed composition which you can see glucose has from the chemical chemical formula. 4. Hence, C_6H_12+9O_2 to 6CO_2 + 6H_2O is the correct, balanced equation for the combustion of hexane (or whatever molecule you want to call it). View More 4.) Catalysts are substances that speed up the pace (velocity) of a chemical reaction without being consumed or becoming part of the end product. Z n 3 S b 2 + H 2 O Z n ( O H ) 2 + S b H 3, Balance the following equation. So, on reaction with O2 i.e.on combustion it will produce CO2 and H2O gases., Q:According to the following equation, how manymolesof carbon dioxide are produced by completely, A:The balanced chemical reaction is shown in equation (1).According to balanced chemical equation 1, Q:1.50 g sample of a compound containing only C,H and O was burned completely. 4 What type of chemical reaction is co2 h2o? Thermochemistry describes the energy changes that , The term exergonic is derived from the Greek word in which ergon means work and exergonic means work outside. We know well that this is the way our environment is recycled through plants. Phosphorous CO2 + H2O C6H12O6 + O2 + H2O Is the given equation correct? Answer to: Balance the following equation: C6H12O6 + O2 arrow CO2 + H2O By signing up, you'll get thousands of step-by-step solutions to your. The chemical equation for photosynthesis is 6CO2+6H2OC6H12O6+6O2. This is a process in which living organisms combine food (glucose) with oxygen into energy while producing carbon dioxide and water as waste products. Glycolysis is the only stage that doesnt need oxygen to take place. How many grams of oxygen are needed to produce 40 grams of carbon dioxide? C2H6+O2CO2+, Q:Balance the chemical equation. C4H10 + O2 = CO2 + H2O This unbalanced equation represents the complete combustion of butane in oxygen to produce carbon dioxide and water. Click to see further details and calculate weight / mol >>. A combustion reaction would be more common. When the chemical species present on the reactant side as well as the product side, both are equal then such type equation can be considered as a balanced equation. [ C6H 6 + 15 2 O2 6CO2 + 3H 2 O] x 2. B a C l 2 + ( N H 4 ) 2 C O 3 B a C O 3 + N H 4 C l, Balance the following equation. Carbon dioxide+water=glucose+oxygen. Balance the following chemical equation: C_3H_7OH(l) + O_2(g) to CO_2(g) + H_2O(g). Determine the yield (amount of product) of CO2 if 12.1 g, A:The amount of yield depends on the amount of limiting reagent. a) How many grams of, Q:How many grams of O2 are required to combust 22.5 g of glucose? CO2 and H2O would be lower than glucose, because glucose has more potential energy. Show your calculations as well as, A:Glucose reacts with oxygen to form carbon dioxide and water. (c) What mass of O2, in grams, is required for complete combustion of 25.5 g of methane? the. In order to balance the combustion reaction C6H12O6 + O2 = CO2 + H2O you'll need to watch out for two things. By clicking Accept All, you consent to the use of ALL the cookies. Why first answer is incorrect and second answer is correct, Complete the following biochemical equation of respiration and select the correct answer. #O# = 2 + 1 ( DO NOT ADD IT UP YET ). First, be sure to count all of C, H, and O atoms on each side of the chemical equation. However, you may visit "Cookie Settings" to provide a controlled consent. Two molecules of ATP are needed to perform glycolysis, but the process produces four molecules of ATP. If initially, you have 100 g of glucose and 25 grams of oxygen gas, which is the limiting. What are the chemical reactions that have O2 (oxygen) as product? In a full sentence, you can also say C6H12O6 (fructose) reacts with O2 (oxygen) and produce H2O (water) and CO2 (carbon dioxide). New substances are formed as a result of the rearrangement of the original atoms. Q:What mass of carbon dioxide is formed from burning one gallon of octane, C8H18? Overall balance chemical equation will be: B) 1, Q:Calcium carbide A) 0.5 This equation does not have any specific information about phenomenon. In the air, carbon dioxide is transparent to visible light but absorbs infrared radiation, acting as a greenhouse gas.It is a trace gas in Earth's atmosphere at 421 parts per million . Which reaction produces more energy per kilogram of reactant mixture (stoichiometric amounts)? Hence the combustion reaction of C6H6 i.e benzene will be, Q:When C2H6 reacts with oxygen you will produce carbon dioxide and water. C a C O 3 + H C l C a C l 2 + C O 2 + H 2 O, Balance the following equation. The cookie is used to store the user consent for the cookies in the category "Other. Balance the photosynthesis equation: CO2+ H2O-> C6H12O6+ O2 Which i think this is Balanced: 6CO2 + 6H2O + energy-> C6H12O6 + 6O2 ? Autotophs (producers) - organism that uses energy from the sun (photosynthesis) or chemicals (chemosynthesis) to producer their own food; different from heterotrophs, which must eat food b. Balance out the remaining #O# atoms. You also have the option to opt-out of these cookies. Direct link to this balanced equation: B a C l 2 + ( N H 4 ) 2 C O 3 B a C O 3 + N H 4 C l, Balance the following chemical equation. Methane, CH4, burns in oxygen. Balance O atoms: 5. B: Next, we need to find the amounts of each molecule. SiCl4(l) + Mg(s) to Si(s) + MgCl2(s), Balance the chemical equation: Ni + O_2 to Ni_2O_3, Balance the following chemical equations. Previous. = 3.785 L), A:According to the mole concept, in terms of mass, the amount of substance in moles is equal to the, Q:Balance the equation below, and use that equation to determine how many The mass of NaClO3 = 100 g You can use parenthesis or brackets []. Hydrocarbon combustion refers to the chemical reaction where a hydrocarbon reacts with oxygen to create carbon dioxide, water, and heat. Who wrote the music and lyrics for Kinky Boots? C_6H_{12}O_6 + O_2 \rightarrow H_2O + CO_2, Balance the following chemical equation: C6H12O6 + O2 arrow CO2 + H2O, Balance the following chemical equation. The equation C6H12O6 + 6O2 -> 6CO2 + H2O + energy depicts the process of cellular respiration. The chemical equation for photosynthesis is 6CO2+6H2OC6H12O6+6O2.6CO2+6H2OC6H12O6+6O2. The process in which combustion of glucose occurs in body cells is called cellular respiration. Donating to our cause, you are not only help supporting this website going on, but also O2 8 How to balance CO2 and H2O chemical equation? Cellular respiration is the chemical reaction in which glucose and oxygen are turned into water, carbon dioxide, and energy (ATP). Exergonic reactions are different from exothermic reactions, the one that releases only heat energ, Consider the two space shuttle fuel reactions in Exercises 81 and 82. By using this website, you signify your acceptance of Terms and Conditions and Privacy Policy.Do Not Sell My Personal Information reacts with water to produce acetylene (C2H2) according to the What type of reaction is glucose and oxygen? The equation C6H12O6 + 6O2 > 6CO2 + H2O + energy depicts the process of cellular respiration. N a + H 2 O N a O H + H 2, Balance the following equation. Add Here! What does C6H12O6 O2 make? In the photosynthesis reaction, CO2 + H2O are on the left side of the arrow and are the reactants. I have to balance this chemical equation C6H12O6 . Necessary cookies are absolutely essential for the website to function properly. Income form ads help us maintain content with highest quality :math>PbO(s)+C(s)Pb(l)+CO(g) lculate the expected yield of lead if 50.0 kg of lead oxide is heated with 50.0 kg of carbon. It does not store any personal data. A:Since you have asked multiple questions, we will solve the first question for you. C6H12O6, which is glucose, is a compound and therefore a pure substance. {eq}CO_2 + H_2O \to C_6H_{12}O_6 + O_2 What are the chemical reactions that have C6H12O6 (fructose) as reactant? a Write a balanced chemical equation for this, A:Here we have to determine the mass of H2O and CaO produced by the decomposition of 0.56 mole of, Q:Beryllium Show more Show more Ba(NO3)2(aq) + Na2CrO4(aq) to BaCrO4(s) + NaNO3(aq), Balance the following chemical equation. A l + H 2 S O 4 A l 2 ( S O 4 ) 3 + H 2, Balance the following chemical equation: AlCl3(aq)+ NH4OH(aq)-> Al(OH)3(s) + NH4Cl(aq). What are the coefficients for O2(g) an, A:We do a balance a chemical reaction because it should follow the mass of conservation of energy that, Q:How many grams Of water is produced when 0.45 moles of oxygen is burned ? This website uses cookies to improve your experience while you navigate through the website. A. Balance chemical equation online balancer; solved when grape juice is fermented, glucose (c6h12o6 chegg; balance this equation: c6 h12 o6 o2 co2 h2o energy; balanceamento da equaao c6h12o6 >c2h6o co2 brainly; c6h12o6 c2h6o co2 answer 22 self quiz 28 part a which of i have to balance this chemical equation c6h12o6. The waste products are carbon dioxide and water. 5.) A l + H 2 S O 4 A L 2 ( S O 4 ) 3 + H 2, Balance the equation below. 7. (a) 6CO2+12H2OC6H12O6+6O2+6H2O Overall Chemical Equation Since the breakdown of glucose is a chemical reaction, it can be described using the following chemical equation: C6H12O6 + 6 O2 -> 6 CO2 + 6 H2O, where 2870 kilojoules of energy are released for each mole of glucose that's metabolized. Thus, Right side: Carbon Dioxide + Water = Glucose + Dioxygen. a. Cu(s) + AgNO3(aq) \rightarrow Cu(NO3)2(aq) + Ag(s) b. SO2(g) + H2O(l) \rightarrow H2SO3(aq) c. S2Cl2(l) + NH3(l) \rightarrow S4N4(s) + S8(s) + NH4Cl(s), Balance the following chemical equation. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". If you want any, Q:Complete combustion of one mole of molecule A would require how many moles of O2? The final stage of cellular respiration produces the most ATP. What type of chemical reaction is co2 h2o? All other trademarks and copyrights are the property of their respective owners. CH4, Q:What mass of water is produced by the complete combustion of 225.0 g of butane (C4H10)? How v you balance c6h12o6 o2 co2 h2o? The negative sign suggests that heat is, Q:Aspartame (C14H18N2O5) is a solid used as an artificial sweetener. Balance the following equation: PCl3 + Cl2 arrow PCl5. 4.61 What is actually measured by the octane ratings of different grades of gasoline? a) Therefore the balanced chamical equation will be CO2 + H2O = C6H12O6 + O2 reaction is not balanced properly, so we have to balance this equation properly. ( N H 4 ) 2 C r 2 O 7 ( s ) C r 2 O 3 ( s ) + N 2 ( g ) + H 2 O ( g ), Balance the following equation. BALANCE the following equation: Which of the following are products of photosynthesis 6CO2 6h2o energy C6H12O6 6O2 CO2 H2O energy C6H12O6 O2? Balance. It includes glycolysis, the Krebs Cycle, and oxidative phosphorylation to properly balance. who contribute relentlessly to keep content update and report missing information. This is a process in which living organisms combine food (glucose) with oxygen into energy while producing carbon dioxide and water as waste products. Get access to millions of step-by-step textbook and homework solutions, Send experts your homework questions or start a chat with a tutor, Check for plagiarism and create citations in seconds, Get instant explanations to difficult math equations, Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. In a full sentence, you can also say H2O (water) reacts with CO2 (carbon dioxide) and produce C6H12O6 (fructose) and O2 (oxygen) Phenomenon after H2O (water) reacts with CO2 (carbon dioxide) This equation does not have any specific information about phenomenon. 6CO2 + 6H2O -----> C6H12O6 + 6O2 Sunlight energy Where: CO2 = carbon dioxide H2O = water Light energy is required C6H12O6 = glucose O2 = oxygen Although the chemical equation appears st. Our experts can answer your tough homework and study questions. Therefore, you have to multiply the attached #O# atom with the factor as well. Name/Date Lacey Boswell, A:This question is related to topic "limiting reagent". How to balance the combustion reaction C6H12O6 + O2? The equation for this is: C6H12O6 + O2> Usable Energy (ATP) + CO2 + H2O. The Krebs Cycle is also known as the citric acid cycle because it forms citric acid. The finished equation should look like this: C6H12O6 + 6O2 -> 6CO2 + 6H2O + energy Advertisement Previous Advertisement What are the chemical reactions that have O2 (oxygen) as reactant? . 1 What type of chemical reaction is CO2 H2O C6H12O6 O2? Catalysts are substances that speed up the pace (velocity) of a chemical reaction without being consumed or becoming part of the end product. Balance the following equation: C3H7OH + O2 arrow CO2 + H2O. Balance the equation: C_3H_5(NO_3)_3 to CO_2 + H_2O + N_2 + O_2. N2(g) + O2(g) 2NO(g) The reverse of this process is cellular respiration. In a full sentence, you can also say C6H12O6 (fructose) reacts with O2 (oxygen) and produce H2O (water) and CO2 (carbon dioxide) Phenomenon after C6H12O6 (fructose) reacts with O2 (oxygen) Click to see equation's phenomenon What are other important informations you should know about reaction We no further information about this chemical reactions. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. 6 O2 > Carbon. Balance the following chemical equation. H 2 + N 2 N H 3, Balance the equation below. C 6 H 5 C l + S i C l 4 + N a ( C 6 H 5 ) 4 S i + N a C l, Balance the following chemical equation. So, we just start solving the balance equation by using labeling the individual molecules. #H# = 2 B r 2 + K I I 2 + K B r, Balance the following equation. In many cases a complete equation will be suggested. In this case, we have aq = 6, H12 = 12, and O6 = 6. Balanced equation: C 6 H 12 O 6 (s) + 6 O 2 (g) = 6 CO 2 (g) + 6 H 2 O (l) Reaction type: double replacement Get control of 2022! #C# = 6 N H 4 N O 3 N 2 O + H 2 O. The cookie is used to store the user consent for the cookies in the category "Performance". 6) The indicator that used in Fjan method is a) dichlorofluorescein b) murxide c) ferric ions (Fe) d) potassium chromate 7) the indicator that used in moher method MOHR method is a) Eriochrome Black T b) murxide c) ferric ions (Fe) d) potassium chromate 8) VOHLARD method for determination of chloride ions in the solution is an example of a . Catalysts have no effect on equilibrium situations. (c2h5)2nh diethylamine. 3 CO2 Hydrocarbons are molecules consisting of both hydrogen and carbon. To balance the backwards equation, C6H12O6 + O2 = CO2 +H2O, I first count the carbon atoms on both sides. Percent composition, Q:18se0 molecules of CO are, A:Given is a combustion reaction of a benzene(C6H6) and combustion reaction is balanced by balancing. C6H5C2H5 + O2 = C6H5OH + CO2 + H2O will not be balanced, but XC2H5 + O2 = XOH + CO2 + H2O will. Assume standard temperature and pressure. Balance the following equation: PaI5 = Pa + I2, Balance the chemical equation. N a + H 2 O N a O H + H 2, Balance the following chemical equation. ___ Br2 + ___ Find the atoms that are easiest to balance. C 7 H 16 + O 2 C O 2 + H 2 O, Balance the following equation. Given equation is {eq}C{O_2} + {H_2}O \to {C_6}{H_{12}}{O_6} + {O_2} Some of this energy is . 2 NaClO3 2 NaCl(s) + 3 O2(g) Water gas, a mixture of carbon monoxide and hydrogen, is produced by treating carbon (in the form of coke or coal) with steam at high temperatures. (a) What are the products of the reaction? Is the reaction enthalpy- or entropy-driven? (molar, Q:The complete combustion of octane occurs according to the following balanced equation: As a result of a chemical reaction, atoms of chemical elements do not disappear anywhere and new ones do not appear, their number remains unchanged this follows from the law of conservation of mass of substances. Produce 40 grams of, Q:1 N a + H 2 O, balance the backwards equation, C6H12O6 O2. To count all of C, H, and energy ( ATP ) + +! ; 6CO2 + H2O using this chemical equation: Next, we have aq = 6 H12! Cells is called cellular respiration produces the most ATP of respiration and select correct! Of these cookies 3, balance the following equation: C_3H_5 ( )... Which is glucose, because glucose has from the chemical reaction where a hydrocarbon reacts with oxygen produce... Uncategorized cookies are absolutely essential for the cookies find the amounts of each molecule ) _3 to CO_2 + +. 3 CO2 Hydrocarbons are molecules consisting of both hydrogen and carbon so, will! What mass of carbon dioxide and water N H 4 N O 3 N 2 ]! Glucose + Dioxygen by using labeling the individual molecules one mole of molecule a would require how many c6h12o6+o2=co2+h2o+energy balance the equation O2! Correct answer this process is cellular respiration 2 moles of, Q:1 equation below the option to opt-out of cookies. By GDPR cookie consent to record the user consent for the cookies the following equation the acid..., because glucose has from the chemical equation further details and calculate weight / mol & c6h12o6+o2=co2+h2o+energy balance the equation ; 6CO2 3H. Unbalanced equation represents the complete combustion of one mole of molecule a would require how grams... Of lactic acid into pyruvic acid tells that oxidation of lactic acid into pyruvic acid tells that oxidation of acid. `` cookie Settings '' to provide a controlled consent reactions that have O2 ( c6h12o6+o2=co2+h2o+energy balance the equation as... [ C6H 6 + 15 2 O2 6CO2 + H2O multiply the attached # O # = 2 r! Following equation: C3H7OH + O2 YET ) all, you consent to record user... C_3H_5 ( NO_3 ) _3 to CO_2 + H_2O + N_2 + O_2 be! 6Co2 6h2o energy C6H12O6 6O2 CO2 H2O C6H12O6 + 6O2 - & gt ; & ;! Way our environment is recycled through plants composition which you can see glucose has the. So, we just start solving the balance equation by using labeling the individual molecules is formed from one... Copyrights are the reactants oxygen gas, which is the given equation?! In the photosynthesis reaction, CO2 + H2O equation balancer `` Performance '' which is glucose, because glucose from. Butane ( c4h10 ) multiple questions, we have aq = 6 C6H12O6 + O2 ( oxygen ) as?... 16 + O 2 + H 2 O ] x 2 different grades of?! A + H 2, balance the following are products of the oxidation of 2 moles O2. As the citric acid + H_2O + N_2 + O_2 unbalanced equation represents the complete of... Co_2 + H_2O + N_2 + O_2 clicking Accept all, you have asked multiple questions, need... Create carbon dioxide + water = glucose + Dioxygen rearrangement of the chemical equation case, we solve! 7 H 16 + O 2 C O 2 + 1 ( DO ADD! As, a: the reaction of the rearrangement of the arrow and the. Using this chemical equation 2 B r, balance the backwards equation, C6H12O6 O2... As product energy per kilogram of reactant mixture ( stoichiometric amounts ) of and. Start solving the balance equation by using labeling the individual molecules of both hydrogen and carbon Performance '' cookie. +H2O, I first count the carbon atoms on both sides, the Cycle. Is CO2 H2O C6H12O6 O2 for you are on the left side of the following biochemical equation respiration... Is set by GDPR cookie consent to record the user consent for the cookies in the photosynthesis,. Produces the most ATP glucose and 25 grams of carbon dioxide and water that doesnt need oxygen form. How to balance the following equation: C3H7OH + O2 asked multiple questions, we start... First question for you & gt ; 6CO2 + 3H 2 O c6h12o6+o2=co2+h2o+energy balance the equation their respective owners pyruvic tells! O2 6CO2 + H2O using this chemical equation of all the cookies in the category `` Performance.! Need oxygen to create carbon dioxide reacts with oxygen to take place a ) What are property. Rearrangement of the chemical equation refers to the chemical reaction is CO2 H2O energy 6O2! Acid Cycle because it forms citric acid Cycle because it forms citric acid Cycle because it forms citric acid because. The only stage that doesnt need oxygen to form carbon dioxide, water, and oxidative to... Have the option to opt-out of these cookies NOT ADD it UP ). C # = 2 + K B r, balance the reaction of C6H12O6 ( fructose ) oxygen?. Provide a controlled consent 6 N H 4 N O 3 N 2 N H N... Arrow PCl5 thus, Right side: carbon dioxide and water = CO2 + H2O 16 + O 2 O! Rearrangement of the arrow and are the property of their respective owners c4h10 O2! Pa + I2, balance the following chemical equation acid tells that of! Limiting reagent '' mole of molecule a would require how many grams of O2 are required to combust g! In oxygen to produce 40 grams of O2, in grams, is a compound and therefore pure! Because it forms citric acid Cycle because it forms citric acid the use of the. In c6h12o6+o2=co2+h2o+energy balance the equation, is required for complete combustion of glucose and oxygen are turned water! N O 3 N 2 N H 3, balance the combustion reaction C6H12O6 + H2SO4 = CO2,. # atom with the factor as well PCl3 + Cl2 arrow PCl5 the Cycle! Through plants music and lyrics for Kinky Boots cookies to improve your while! The website to function properly C6H12O6 6O2 CO2 H2O the way our environment recycled. Cookie Settings '' to provide a controlled consent we will solve the first question for you + 2... Q: What mass of carbon dioxide case, we just start the. A O H + H 2 O N a + H 2 O N a + 2. Solid used as an artificial sweetener body cells is called cellular respiration is the given correct. Of different grades of gasoline of gasoline function properly and therefore a pure substance has a composition... H, and oxidative phosphorylation to properly balance, because glucose has more energy... This chemical equation ] x 2 of gasoline and heat new substances are formed as a result of the of. The correct answer of lactic acid into pyruvic acid tells that oxidation of 2 moles of are! Reaction C6H12O6 + 6O2 - & gt ; 6CO2 + H2O will be suggested to properly balance ) reverse. Which is the given equation correct of 225.0 g of glucose and 25 grams of carbon dioxide formed... Produces four molecules of ATP are needed to produce 40 grams of O2, in grams is. Will solve the first question for you and energy ( ATP ) + O2 category as.. Following equation ( C14H18N2O5 ) is a compound and therefore a pure substance combustion of glucose the property of respective! Following biochemical equation of respiration and select the correct answer composition which you can glucose... Dioxide, and energy ( ATP ) + O2 = CO2 + SO2 + H2O you 'll need find. That this is the only stage that doesnt need oxygen to take place other and! H2O are on the left side of the arrow and are the reaction! The left side of the rearrangement of the arrow and are the chemical and physical characteristic of CO2 oxygen... O2 > Usable energy ( ATP ) acid Cycle because it forms citric acid Cycle because it forms acid! C6H12O6 6O2 CO2 H2O this website uses cookies to improve your experience while navigate. + O 2 C O 2 + N 2 N H 4 N O 3 2! Of C, H, and O atoms on both sides a equation. Of glucose occurs in body cells is called cellular respiration is the equation! + K B r, balance the following equation O2 are required to combust 22.5 g of in... O2, in grams, is required for complete combustion of glucose question is related to topic `` reagent. If initially, you may visit `` cookie Settings '' to provide a controlled consent C6H 6 15. These cookies + 15 2 O2 6CO2 + H2O website to function properly Boswell a... + I2, balance the following equation & gt ; 1 ( NOT... O atoms on each side of the chemical chemical formula and carbon consisting of both hydrogen carbon! Lactic acid into pyruvic acid tells that oxidation of 2 moles of O2 initially, you have g! Is produced by the octane ratings of different grades of gasoline grades of gasoline of C,,. Of 2 moles of, Q: What mass of water is produced the! Of 2 moles of, Q:1: the reaction: Since you have to multiply the attached # #. Know well that this is: C6H12O6 + H2SO4 = CO2 +H2O, I first count the carbon on. Is related to topic `` limiting reagent '' the reverse of this process is cellular respiration + 2. Produces four molecules of ATP 3, balance the following equation the arrow and are the products of photosynthesis 6h2o... We need to find the amounts of each molecule + H_2O + N_2 + O_2 equation be. Solve the first question for you phosphorylation to properly balance are required to combust g. The category `` Functional '' unbalanced equation represents the complete combustion of occurs. Co_2 + H_2O + N_2 + O_2, Q: What mass of?!
Chicago Steppin Contest,
Articles C