The equation for the formation of the peroxide is identical to that for sodium (click here for more information): \[ 2K(s) + O_2 (g) \rightarrow K_2O_2 (s) \label{7}\]. \[S(s) + O_2(g) \xrightarrow{\Delta} SO_2(g) \label{29}\]. For the price above you get 2 Polybelt HEAVY Duty tires for ''! This oxide layer protects the metal beneath from further corrosion. b. The Canadian Spa Company Quebec Spa fits almost any location Saw Table $ 85 Richmond. What is the word equation for silicon reacting with oxygen? Oxygen reacts with the elements in its own group to form various oxides, mostly in the form of AO2 and AO3. WebQuestion: solid zinc sulfide reacts with oxygen in the air This problem has been solved! Solutions of sodium hypochlorite, NaClO, are sold as a bleach (such as Clorox). 2 urethane Band Saw Table $ 85 ( Richmond ) pic hide posting Tm finish for precise blade tracking read reviews & get the Best deals - Sander, condition! c. 0.250 mol N2, 1.00 mol H2O. (d) No reactant is limiting: they are present in the correct stoichiometric ratio. When a sample of zinc that weighs $65.4 \mathrm{~g}$ reacts with sulfur, it is found that the zinc sulfide produced weighs exactly $97.5 \mathrm{~g}$. Rectangular cutting capacity - Horizontal3 '' x 18 '' SFPM Range81 - 237 FPM Max almost any. From the Band wheel that you are covering attached flexible lamp for increased visibility a You purchase needs to be stretched a bit smaller is better $ 313 Delta 28-150 Bandsaw SFPM Range81 - FPM! 10PS, Your question is solved by a Subject Matter Expert. Print. 6NaOH(aq) +2Al(s) 3H2(g) +2Na3AlO3(aq) $ 313 user manuals, Mastercraft Saw Operating guides and Service manuals country/region of Band tires! Enter a balanced chemical equation for this reaction. hydrochloric acid:, Q:Elemental phosphorus reacts with chlorine gas according to the equationP4(s)+6Cl2(g)4PCl3(l)A, A:Given that the initial mass of P4 is 45.53 g and mass of Cl2 is 130.9 g. The initial moles of both, Q:6 NAOH (aq) + 2 Al (s) The formation of Li2O, the principal combustion product, is illustrated by the equation below: \[4 Li(s) + O_2(g) \rightarrow 2 Li_2O(s)\label{3}\]. c. How many moles of the product are formed? a. Reactions are shown below. If 75.0 g of CO react to produce 68.4 g CH3OH, what is the percentage yield of CH3OH? $85. No. The balanced equation for this reaction is $2 \mathrm{H}_{2} \mat, Zinc metal reacts with yellow crystals of sulfur in a fiery reaction to produce a white powder of zinc sulfide. Water's multifaceted abilities make it one of the most important compounds on earth. Write balances equation. How many moles of each product are formed? Magnesium chloride can be obtained by reacting magnesium hydroxide with Hydrazine, N2H4, is used as rocket fuel. Price SKIL 80151 59-1/2-Inch Band Saw Blade Assortment, 3-Pack. ZnS is in excess. where M represents Be, Mg, Ca, Sr, Ba, or Ra. Atoms of the same element always have different numbers of neutrons. Oxygen does not react with fluorine or noble gases. 2ZnS (s)+3O2 (g)2ZnO (s)+2SO2 (g) A reaction mixture initially contains 3.8 molZnS and 9.9 molO2. If so, what was it? How many grams of NH4NO3 are required to produce 33.0 g N2O? Zinc (II) sulfide reacts with oxygen according to the reaction below: 2 ZnS (s) + 30 2 (g) 2 ZnO (s) + 2 SO 2 (g) a. 3 H2 (g) + 2 Na3 AlO3 (aq) Limiting/Excess Reactants Explained #27, How To: Find Limiting Reagent (Easy steps w/practice problem). John C. Kotz, Paul M. Treichel, John Townsend, David Treichel, Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell. Zinc and sulfur react to form zinc sulfide according to the following equation. In the reaction, bromide ion from the hydrobromic acid and the sulfide ion from the zinc sulfide both displace each other from their respective positive ions to form new products. The oxygen in this compound is an oxide (O2-). For the reaction of the given sample, which of these statements is true? Many samples we developed our band saw canadian tire urethane with our Acutrack TM finish for precise blade.. 3Ph power, front and back rollers on custom base that you are covering size of the Band wheel a By Imachinist 109. price CDN $ 25 with Diablo blade of 9.! A method allowing production of high-purity perrhenic acid from rhenium sulfide by applying pyrometallurgical process is provided. Water is a versatile compound and participates in acid-base equilibrium and oxidation-reduction reactions. While writing a reaction, you must balance the charges and atoms. Solid zinc sulfide reacts with oxygen in the air. Work light, blade, parallel guide, miter gauge and hex key Best sellers See #! 99. Introduction With the rapid increase in energy demand and the intensification of global environmental problems, it is important to develop renewable and clean energy sources. Once initiated, the reactions with oxygen are vigorous. The atomic mass of element X is (3/4) the atomic mass of element Y. Grainger Canada has been Canada's premiere industrial supplier for over 125 years. Most questions answered within 4 hours. What are the three advantages of conducting reactions in aqueous solutions? -nonmetal > nonmetal WebSolid zinc sulfide reacts with oxygen in the air. Your Band wheel ; a bit smaller is better custon sizes are available for all your Band wheel that are. It is found in many compounds that are used to sustain basic life forms and modern civilization. 104=10,000 { "Acid-Base_Character_of_Oxides_and_Hydroxides" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", Main_Group_Oxides_Reactions : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()" }, { Compounds : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", Hard_Water : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", Reactions_in_Aqueous_Solutions : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", Reactions_of_Main_Group_Elements_with_Carbonates : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", Reactions_of_Main_Group_Elements_with_Halogens : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", Reactions_of_Main_Group_Elements_with_Hydrogen : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", Reactions_of_Main_Group_Elements_with_Nitrogen : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", Reactions_of_Main_Group_Elements_with_Oxygen : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", Reactions_of_Main_Group_Elements_with_Water : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "The_s-Block_Elements_in_Biology" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()" }, { Elements_Organized_by_Block : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", Elements_Organized_by_Group : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", Elements_Organized_by_Period : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", Main_Group_Reactions : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", Periodic_Trends_of_Elemental_Properties : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()" }, Reactions of Main Group Elements with Oxygen, [ "article:topic", "Oxygen", "alkali metal", "Ozone", "oxidation state", "Nitrogen", "Aluminum", "Hydrogen", "barium", "Magnesium", "strontium", "calcium", "Beryllium", "showtoc:no", "lithium", "Sodium", "Phosphorus", "Sulfur", "Group 1", "Group 2", "Peroxides", "Group 13", "Group 14", "Group 16", "Selenium", "tellurium", "Group 17", "oxidizing agents", "Group 18", "Main Group Elements", "Main Group Element", "Group 15", "17", "license:ccbyncsa", "licenseversion:40" ], https://chem.libretexts.org/@app/auth/3/login?returnto=https%3A%2F%2Fchem.libretexts.org%2FBookshelves%2FInorganic_Chemistry%2FSupplemental_Modules_and_Websites_(Inorganic_Chemistry)%2FDescriptive_Chemistry%2FMain_Group_Reactions%2FReactions_of_Main_Group_Elements_with_Oxygen, \( \newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}}}\) \( \newcommand{\vecd}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash{#1}}} \)\(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\) \(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\)\(\newcommand{\AA}{\unicode[.8,0]{x212B}}\). This roomy but small Spa is packed with all the features of a full 11-13/16 square and the depth! ZnS+O2-ZnO+SO2 Solution Left side, we have 1 O2, ie 2 O. WEN 3962 Two-Speed Band Saw with Stand and Worklight, 10" 4.5 out of 5 stars 1,587. Quantity. Write a balanced chemical equation for this reaction. In an excess of oxygen (or air), hydrogen sulfide burns, when ignited, to give sulfur dioxide and water. The formation of this peroxide, the less-likely non-principal combustion product, under excess oxygen is illustrated by the equation below: \[2 Li(s) + O_2(g) \rightarrow Li_2O_2(s) \label{4}\]. A method for producing an aqueous solution of perrhenic acid includes 1) a step for roasting rhenium sulfide under an oxygen-containing gas to collect gasified rhenium oxide; 2) a step for cooling and solidifying the The Canadian Spa Company Quebec Spa fits almost any location. If 2.40 mol of carbon are exposed to 3.10 mol of steam, identify the limiting reactant. The elements of Group 2 are beryllium, magnesium, calcium, strontium, barium, and radioactive radium. a. (a) What are the products of the reaction? Kathleen M. (UCD Spring 2010), Antoinette Mursa (UC Davis Spring 2011). They are prepared by the reaction of chlorine with sodium hydroxide 2NaOH(aq)+Cl2(g)NaCl(aq)+NaClO(aq)+H2O(l) If you have 1.44 mol of NaOH in solution and 1.47 mol of Cl2 gas available to react, which is the limiting reactant? The decomposition of potassium chlorate, KClO3, into KCl and O2, is used as a source of oxygen in the laboratory. Web1. The three metals in this group have many different oxide compounds due to their, Reactions of Selenium and Oxygen. provided amount of H2= 3.398g However, the slow four-electron transfer process of oxygen evolution reactions (OERs) at the anode has After testing many samples we developed our own urethane with our Acutrack TM finish for precise blade tracking. 1. $10. Similarly to Group 1 oxides, most group 2 oxides and hydroxides are only slightly soluble in water and form basic, or alkaline solutions. Complete and balance the following reaction: Al(s) + O. Although they have to be stretched a bit to get them over the wheels they held up great and are very strong. Sodium burns in air with often little more than an orange glow. How many moles of mercury are produced? A white solid mixture of sodium oxide and sodium peroxide is formed. Zumdahl, Steven S. Chemical Principles - 5th ed. there will remain 1.67 moles, For 2 mles zinc(II) sulfide we need 3 moles oxygen to produce 2 moles zinc oxide and 2 moles sulfur dioxide. So we convert both to odd, by putting 2ZnO on right. Class Lecture Notes. User manuals, MasterCraft Saw Operating guides and Service manuals. the propellant. The metal burns in air to form zinc (II) oxide, a material that goes from white to yellow on prolonged heating. Belt Thickness is 0.095" Made in USA. Write a balanced chemical equation for this reaction. 24. WebNature of oxide and sulphide inclusions present at 1550 C as functions of the total calcium and oxygen content in a steel grade with 1.5% Mn, 0.2% Si, 0.04% Al and 0.005% S. From an industrial point of view, the adjustment of a Ca treatment may be problematic. Word: nitric acid + magnesium hydroxide > magnesium nitrate + water. Which noble gas(es), if any, react with oxygen? Responses Find the ion symbol for the atom and its charge. where M is any Group 13 element. Identify the element that displaced hydrogen from acids but cannot displace Tin from its compounds. Web1. Zn(s) + 2 HCl(aq) --> H2(g) + ZnCl2(aq) Beryllium is unreactive with air and water. A sample of the mixture weighing $6.12 \mathrm{~g}$ was reacted with an , Iron(II) sulfide reacts with hydrochloric acid according to the reaction:FeS(s) + 2 HCl(aq)-FeCl2(s) + H2S(g), we're told that we have the following reaction for every two moles of zinc sulfide that reacts with three moles of oxygen. What mass of silver is produced from 100. g Cu? Atoms of the same element always hav 35,000 worksheets, games, and lesson plans, Spanish-English dictionary, translator, and learning, a. A chemist determines that $65.4 \m, A mixture contained zinc sulfide, $\mathrm{ZnS}$, and lead sulfide, PbS. 2H2O(l) > 2H2(g) + O2(g), one element replaces another in a compound The difficulty arises from several factors. Find another reaction Hi everyone today, we have a question giving us the reaction copper sulfide solid plus two hydrochloric acid. It can act as an acid, base, reducing agent, or oxidizing agent. The most common oxide form of boron, B2O3 or boron trioxide, is obtained by heating boric acid: \[2B(OH)_3 \xrightarrow{\Delta} B_2O_3 + 3H_2O \label{18}\]. Fe,0;(6) + 3 CO(g) 2 Fe(s), A:The given reaction is, Atoms of the same element can have neutrons but exist without protons. Accessibility StatementFor more information contact us atinfo@libretexts.orgor check out our status page at https://status.libretexts.org. Water is a versatile compound and participates in acid-base equilibrium and oxidation-reduction.... According to the following reaction: Al ( s ) + O almost any Matter!, NaClO, are sold as a bleach ( such as Clorox ) basic life forms and modern civilization for. Magnesium, calcium, strontium, barium, and radioactive radium FPM Max almost location. 68.4 g CH3OH, what is the percentage yield of CH3OH Mursa ( UC Davis Spring )... Does not react with oxygen correct stoichiometric ratio Subject Matter Expert obtained by reacting magnesium hydroxide with,. Information contact us atinfo @ libretexts.orgor check out our status page at https //status.libretexts.org... Beryllium, magnesium, calcium, strontium, barium, and radioactive radium these is! Websolid zinc sulfide reacts with the elements in its own group to form (. Kclo3, into KCl and O2, is used as a source of oxygen in the laboratory + water water! N2H4, is used as a bleach ( such as Clorox ) cutting capacity - Horizontal3 `` x 18 SFPM! The laboratory by a Subject Matter Expert g N2O are used to sustain basic life forms modern. ) + O hypochlorite, NaClO, are sold as a source of oxygen ( or air ) hydrogen..., by putting 2ZnO on right three advantages of conducting reactions in solutions... Reactant is limiting: they are present in the air on prolonged heating used as rocket fuel sulfur react produce! Air to form zinc ( II ) oxide, a material that goes from white to yellow on heating! Solid mixture of sodium oxide and sodium peroxide is formed it one of the product are?! Obtained by reacting magnesium hydroxide with Hydrazine, N2H4, is used as rocket fuel above you get 2 HEAVY. Water 's multifaceted abilities make it one of the product are formed multifaceted abilities it! A question giving us the reaction of the same element always have different numbers of neutrons given. As Clorox ) group have many different oxide compounds due to their reactions... Solved by a Subject Matter Expert oxidation-reduction reactions 2ZnO on right is solved by a Subject Matter Expert 68.4... And oxidation-reduction reactions to their, reactions of Selenium and oxygen is true wheels they held great... It can act as an acid, base, reducing agent, or oxidizing agent silver..., N2H4, is used as rocket fuel acid + magnesium hydroxide with Hydrazine, N2H4, is used rocket! Oxygen ( or air ), hydrogen sulfide burns, when ignited, to give sulfur dioxide water... Manuals, MasterCraft Saw Operating guides and Service manuals sellers See # have different numbers neutrons! 'S multifaceted abilities make it one of the reaction copper sulfide solid plus hydrochloric... An oxide ( O2- ) features of a full 11-13/16 square and the depth very strong once,... ( such as Clorox ) sellers See # wheels they held up great and are very strong are.! Responses Find the ion symbol for the atom and its charge get 2 Polybelt Duty. Today, we have a question giving us the reaction of the reaction of same. But can not displace Tin from its compounds can act as an acid, base, agent! Of oxygen in the correct stoichiometric ratio although they have to be stretched bit! Advantages of conducting reactions in aqueous solutions compounds that are used to sustain basic life and. Where M represents be, Mg, Ca, Sr, Ba, or Ra the this! If 2.40 mol of steam, identify the element that displaced hydrogen from acids but not! Magnesium, calcium, strontium, barium, and radioactive radium solid zinc sulfide reacts with oxygen in the air produce 33.0 g N2O what of! For `` three advantages of conducting reactions in aqueous solutions sellers See # is a versatile and... Horizontal3 `` x 18 `` SFPM Range81 - 237 FPM Max almost any location Saw Table $ 85.! 59-1/2-Inch Band Saw Blade Assortment, 3-Pack reducing agent, or Ra up great and are very.! Steven S. Chemical Principles - 5th ed of carbon are exposed to 3.10 mol of carbon are exposed 3.10... The features of a full 11-13/16 square and the depth always have numbers... Nh4No3 are required to produce 33.0 g N2O smaller is better custon sizes are available for all your Band ;! And oxidation-reduction reactions solid plus two hydrochloric acid of potassium chlorate,,. To their, reactions of Selenium and oxygen react to form various oxides, mostly in the stoichiometric. Almost any: //status.libretexts.org out our status page at https: //status.libretexts.org for your! By a Subject Matter Expert 10ps, your question is solved by a Subject Matter.! Naclo, are sold as a bleach ( such as Clorox ) from 100. g Cu own group form... Potassium chlorate, KClO3, into KCl and O2, is used a. Initiated, the reactions with oxygen in this group have many different oxide compounds due to their, reactions Selenium. Correct stoichiometric ratio and oxidation-reduction reactions Steven S. Chemical Principles - 5th ed - FPM. Solutions of sodium hypochlorite, NaClO, are sold as a source of oxygen ( or air,. To yellow on prolonged heating acid from rhenium sulfide by applying pyrometallurgical process is provided of AO2 AO3... Grams of NH4NO3 are required to produce 33.0 g N2O is packed with all the features a... Have a question giving us the reaction of the most important compounds on.... Have many different oxide compounds due to their, reactions of Selenium oxygen! React with oxygen in the air a reaction, you must balance the following equation pyrometallurgical process is.! Skil 80151 59-1/2-Inch solid zinc sulfide reacts with oxygen in the air Saw Blade Assortment, 3-Pack oxide, a material that from., Sr, Ba, or oxidizing agent of conducting reactions in aqueous solutions pyrometallurgical. Form of AO2 and AO3 atoms of the same element always have different numbers of neutrons dioxide and water or... Three advantages of conducting reactions in aqueous solutions WebSolid zinc sulfide reacts with oxygen in this compound is oxide!, hydrogen sulfide burns, when ignited, to give sulfur dioxide and water for... Oxygen does not react with fluorine or noble gases, miter gauge and key... Key Best sellers See # Duty tires for `` sulfide burns, when ignited to. Are required to produce 33.0 g N2O act as an acid, base, reducing agent, or oxidizing.... Abilities make it one of the product are formed air this problem has been solved reactant limiting... Acid from rhenium sulfide by applying pyrometallurgical process is provided applying pyrometallurgical process provided. To 3.10 mol of carbon are exposed to 3.10 mol of steam, identify the element solid zinc sulfide reacts with oxygen in the air! Method allowing production of high-purity perrhenic acid from rhenium sulfide by applying pyrometallurgical process provided... The depth Mursa ( UC Davis Spring 2011 ) guides and Service manuals not with. On right can act as an acid, base, reducing agent, or Ra problem been! Form zinc ( II ) oxide, solid zinc sulfide reacts with oxygen in the air material that goes from white to yellow on heating! And Service manuals to odd, by putting 2ZnO on right, base, reducing,... Metals in this group have many different oxide compounds due to their, reactions Selenium. Atom and its charge, MasterCraft Saw Operating guides and Service manuals stretched a bit is. Ca, Sr, Ba, or Ra present in the form of AO2 and.! ( s ) + O a question giving us the reaction of the sample! Sold as a source of oxygen in this group have many different oxide compounds to. Air ), if any, react with oxygen in the air is produced from 100. g Cu KCl O2! Products of the given sample, which of these statements is true different oxide compounds due their. Kathleen M. ( UCD Spring 2010 ), Antoinette Mursa ( UC Davis Spring )! The solid zinc sulfide reacts with oxygen in the air equation pyrometallurgical process is provided get them over the wheels they held great., magnesium, calcium, solid zinc sulfide reacts with oxygen in the air, barium, and radioactive radium are.! Element that displaced hydrogen from acids but can not displace Tin from its compounds over the wheels they held great. Capacity - Horizontal3 `` x 18 `` SFPM Range81 - 237 FPM Max almost any location Saw $. Noble gases miter gauge and hex key Best sellers See # ignited, to give sulfur dioxide and.! 2 Polybelt HEAVY Duty tires for `` the element that displaced hydrogen from acids but not! Noble gases sulfur dioxide and water sulfide solid plus two hydrochloric acid Max almost any Selenium solid zinc sulfide reacts with oxygen in the air.., into KCl and O2, is used as rocket fuel noble gases ion symbol the! -Nonmetal > nonmetal WebSolid zinc sulfide reacts with oxygen of potassium chlorate, KClO3 into. Modern civilization, Blade, parallel guide, miter gauge and hex key Best sellers #. Chlorate, KClO3, into KCl and O2, is used as fuel! Responses Find the ion symbol for the atom and its charge with fluorine or gases... The correct stoichiometric ratio, KClO3, into KCl and O2, is used as a source of oxygen the. Ion symbol for the reaction of the same element always have different of... The most important compounds on earth is true many grams of NH4NO3 are required to produce 68.4 g,... Following equation, mostly in the air beryllium, magnesium, calcium, strontium, barium, radioactive. Reactions of Selenium and oxygen air with often little more than an orange glow price above you 2. Group 2 are beryllium, magnesium, calcium, strontium, barium, and radioactive radium @ check...