The positive test result for hydrogen gas, H 2 is answer choices a lit splint; gas burns with a squeaky pop a glowing splint; the splint relights it turns lime water milky / cloudy none of these Question 11 30 seconds Q. Equation 5: Mg(s) + 2H2O(g) Mg(OH)2 (aq) + H2(g). Necessary cookies are absolutely essential for the website to function properly. What type of reaction is Mg+ H2SO4 MgSO4 h2? class 10 chemical reactions and equations. Aqueous magnesium chloride and hydrogen gas are produced when solid magnesium reacts with aqueous hydrochloric acid (HCl). View More Explore more Representation of a Chemical Equation Standard X Chemistry The cookie is used to store the user consent for the cookies in the category "Performance". The solutions involved are colorless. why only these? Catalysts are substances that speed up the pace (velocity) of a chemical reaction without being consumed or becoming part of the end product. If you need a fast reaction, chill the HCl solution down, bringing the equilibrium to the right in favour of the reactants. Write the balanced chemical equation for the reaction of magnesium metal and hydrobromic acid. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. Write a balanced chemical equation to show the reaction of NaOH with the diprotic acid sulfuric acid. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. What happens when magnesium reacts with water in chemical equation? What Is The Word Equation For Sulfuric Acid And Magnesium Oxide? What are the reactants of magnesium hydroxide? Corresponding reactions with other acids such as hydrochloric acid also give the aquated Mg (II) ion. Mg + 2HCl MgCl2 + H2 Reaction of Aluminium with dilute Acid When aluminium reacts with dilute hydrochloric acid, then aluminium chloride and hydrogen gas are formed. Reaction of metals with dilute acids When a metal reacts with a dilute acid , a salt and hydrogen are formed. These cookies track visitors across websites and collect information to provide customized ads. 7 What happens when magnesium is mixed with hydrochloric acid? sulfuric acid is an irritant. Corresponding reactions with other acids such as hydrochloric acid also give the aquated Mg(II) ion. This is called a displacement reaction. Required fields are marked *. A chemical equation is a description of the proportion of reactants than combine to yield a specific chemical product. Step 2: Reaction (a) Manganese (II) sulfide + hydrobromic acid. 7 What is the product of magnesium and sulphuric acid? e) the attraction that holds the atoms together in a polyatomic ion. The equation should include the states (g, l, aq, s). Concentrated sulfuric acid and magnesium metal would produce a much stronger redox reaction. Just clear tips and lifehacks for every day. Write the balanced molecular equation, total ionic equation, and net ionic equation for the reaction that occurs between lithium sulfate and sulfuric acid. By clicking Accept All, you consent to the use of ALL the cookies. Express your answer as a balanced chemical equation. Phenomenon after H2SO4 (sulfuric acid) reacts with Mg (magnesium) This equation does not have any specific information about phenomenon. Magnesium reacts with hydrochloric acid in a similar fashion. note the key here is DILUTE sulphuric acid to yield the weak redox products. What type of reaction is Mg H2SO4 MgSO4 h2? A small wooden splint, lit with a match, can be held over the glass tube to test for the hydrogen gas. In this lab, you will react magnesium sulfate (Epsom salt) with ammonia. Magnesium combined with sulfuric acid produces magnesium sulfate and hydrogen gas. What is the chemical balanced equation for Magnesium metal and hydrochloric acid? Write the balanced molecular equation, complete ionic equation, and net ionic equation for the reaction that occurs between cobalt(II) nitrate and sulfuric acid. Write the balanced equation for the reaction that occurs when sulfuric acid, H2SO4, is titrated with the base sodium hydroxide, NaOH. Reason (R) : Magnesium reacts with nitrogen to form magnesium nitride and this reaction is combination reaction. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. The reaction is exothermic, meaning heat is given off in addition to the hydrogen bubbles. Phases are optional. The easiest way to see this reaction is to take a test tube of sulfuric acid and drop a small ribbon of magnesium into the clear liquid. Write the balanced molecular equation and net ionic equation for the reaction that occurs when solid magnesium hydroxide reacts with a solution of sulfuric acid. d) the transfer of electrons from one atom to another. Include phases. Finish each chemical equation below using the Chemical Equation Checklist to assist you. Mg (s) + HCl (aq) MgCl2 (aq) + H2 (g) Describe the chemical reaction based on the chemical equation below. single displacement reaction Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Magnesium sulfate has several applications. Magnesium reacts with hydrochloric acid according to the equation: Mg(s) + 2 HCl(aq) -> MgCl 2(aq) + H 2(g) This demonstration can be used to illustrate the characteristic reaction of metals with acid, a single replacement reaction, or to demonstrate the generation of hydrogen gas. The practical should take about 20 minutes. 30 seconds. Write the molecular equation and the balanced equation for the following: Sulfuric acid + copper strip. Does magnesium react with sulphuric acid? Assuming 7.00 g of magnesium completely reacts according to the above equation, calculate the moles of. A student added dilute HCl to a test tube containing zinc granules and made following observations: The reaction in which two compounds exchange their ions to form two new compounds is -. Write balanced chemical equations to correspond to each of the following descriptions: (a) When sulfur trioxide gas reacts with water, a solution of sulfuric acid forms. Write the balanced equation for the reaction of sodium bicarbonate with sulfuric acid. Mg(OH)2 Write an unbalanced equation to represent the following reaction: (Do not include phase abbreviations) Magnesium and oxygen react to form magnesium oxide. Sodium chloride, Potassium permanganate react with each other in an acidic environment (NaCl KMnO4 H2SO4) to produce the free chlorine. Answer: It is double displacement reaction. Mgs reaction would quickly try to warm it up by forming chemical bonds and producing heat. what is the sum of the coefficient? (b) Name the type of reaction. Write the balanced thermochemical equation for the following reaction: Magnesium oxide reacts with hydrochloric acid to form magnesium chloride and water. 3 What is the formula of dilute sulphuric acid? (1 2) + (2 1) = 4. 1) Aluminum metal reacts with iron (II) oxide powder to produce aluminum oxide solid and iron metal. But opting out of some of these cookies may affect your browsing experience. But opting out of some of these cookies may affect your browsing experience. Add about 3mL of each solution to their respective test tubes using 1 pipet per solution. d) 4. c) 2. The overall equation for the reaction is shown in Equation 1 below. This is a single displacement reaction and also exothermic. the balanced chemical equation of magnesium oxide and sulfuric acid is given as follows.Magnesium hydroxide and Sulphuric acid will combine to give Magnesium sulphate and waterMg. The cookie is used to store the user consent for the cookies in the category "Other. (D)Dilute nitric acid. Catalysts have no effect on equilibrium situations. Write the balanced molecular equation, total ionic equation, and net ionic equation for the reaction that occurs when potassium hydroxide and excess sulfuric acid are mixed. Mg (s) + Br 2 (g) MgBr 2 (s) Reaction of magnesium with acids Magnesium metal dissolves readily in dilute sulphuric acid to form solutions containing the aquated Mg (II) ion together with hydrogen gas, H 2. O. The chemical formula for the compound is M g C l 2. b) The equation for the neutralisation reaction is given below: M g ( O H) 2 + 2 H C l M g C l 2 + 2 H 2 O c) Magnesium sulphate has magnesium ions and sulphate ions when dissolved in water. 6 What type of reaction is Pb no3 2 2ki pbi2 2kno3? Enter a Melbet promo code and get a generous bonus, An Insight into Coupons and a Secret Bonus, Organic Hacks to Tweak Audio Recording for Videos Production, Bring Back Life to Your Graphic Images- Used Best Graphic Design Software, New Google Update and Future of Interstitial Ads. Magnesium readily reacts with sulfuric acid and forms hydrogen gas bubbles and aqueous magnesium sulfate after the reactants are consumed. Write the balanced chemical equation for the reaction that occurs between lithium hydroxide and sulfuric acid. Done on a Dell Dimension laptop computer with a Wacom digital tablet (Bamboo). Identify all of the phases in your answer. 4 How does magnesium sulfate react with sulfuric acid? This cookie is set by GDPR Cookie Consent plugin. What happens when carbon dioxide gas reacts with sodium hydroxide? All rights reserved. In a redox reaction, there are at least two species because one should be oxidized while the other should be reduced. Variables. Write a balanced chemical equation to represent the following chemical reaction. This reaction is a single-replacement reaction. What are the formulas for the reactants? Write a balanced equation for a reaction between sulfuric acid and sodium hydroxide. Consider as an example the decomposition of water to yield molecular hydrogen and oxygen. The reaction of sodium chloride and sulphuric acid produces hydrochloric gas as a by-product. Write a balanced chemical equation for the decomposition of magnesium carbonate, including state symbols. c) the sharing of electrons. Aluminum metal and sulfuric acid yield aqueous aluminum sulfate and hydrogen gas. This cookie is set by GDPR Cookie Consent plugin. The solutions involved are colorless. A. Write and balance a chemical equation that describes the reaction of Cu(NH_3)4SO_4 \cdot H_2O with hydrochloric acid in aqueous solution. Part 2: Turn the following word equations into chemical equations and balance. Your email address will not be published. Magnesium reacts with dilute sulphuric acid to form magnesium sulphate and hydrogen gas. So, 156.01 g of Al(OH) 3 reacts with 132.03 g of . write the balanced chemical equation for this reaction. What Are The Benefits Of Exercising Daily. Write a balanced chemical equation (with phases) showing the reaction between magnesium and sulfuric acid. Analytical cookies are used to understand how visitors interact with the website. [Ar: H, 1; O, 16; Mg, 24; S, 32] Mg + H 2 SO 4 MgSO 4 + H 2. Label each test tube with the name of one of the 0.1 M solutions above. What characteristics allow plants to survive in the desert? This cookie is set by GDPR Cookie Consent plugin. The balanced equation for the reaction is 2Mg(s)+O2(g)2MgO(s) When 10.2 g Mg is allowed to react with 10.6 g O2, 11.8 g MgO is collected. 2 Al + 3 Ag SO 4 (aq) Al2(SO 4)3 (aq) + 3 Ag 8. Become a Study.com member to unlock this answer! What are the chemical and physical characteristic of H2S (hydrogen sulfide)? Contact sulfuric acid has a concentration from 92 to 94 percent: 2SO + O = 2SO; HO + SO = HSO. Write a balanced chemical equation for the following reaction: Magnesium metal reacts with copper(l)chloride to give copper metal and magnesium chloride. What does the reaction of magnesium with hydrochloric acid produce? If enough magnesium is used, magnesium sulfate drops out of solution to form a white salt. What Are The Best Exercises For A Flat Tummy? b) the attraction between 2 nonmetal atoms. Aqueous barium hydroxide reacts with sulfuric acid to precipitate barium sulfate. A reaction of magnesium metal with hydrochloric acid requires 0.284 moles of hydr. Magnesium sulfate (MgSO4) and water (H20) react to form magnesium heptahydrate (MgSO4*7H2O).which is a solid substance made of translucent white crystals. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. It is a white solid with low solubility in water (Ksp = 5.611012). All the ions will be destroyed, so its not really a question of whether or not the chemicals will exist. Magnesium sulfate react with sulfuric acid 2MgSO 4 + H 2 SO 4 2Mg (HSO 4) 2 [ Check the balance ] Magnesium sulfate react with sulfuric acid to produce magnesium hydrosulfate. Magnesium react with oxygen at room temperature, forming a passivating layer of MgO on the surface. (Hint: Iron will form the iron (III) ion) Fe + CuSO4 CU+ FeSO4 2. 1. MgSO4 (magnesium sulfate), appearing at the end of the reaction. 4H2O. You also have the option to opt-out of these cookies. displacement reaction Combine iron and copper (II) sulfate solution. Use I well of the microtiter plate per reaction. If enough magnesium is used, magnesium sulfate drops out of solution to form a white salt. We also use third-party cookies that help us analyze and understand how you use this website. Write a balanced equation for the reaction of hydrochloric acid with magnesium hydroxide. This is an exothermic reaction, implying that the bonds creation gives off heat. The cookie is used to store the user consent for the cookies in the category "Performance". The product is hydrogen gas, which is diatomic; the reaction occurs in hydrogen fuel; it is a hydrogen atom; and the hydrogen hydrogen is an atomic molecule. A) Write a balanced chemical equation for this reaction. This reaction is a single-replacement reaction. 1. Identify all of the phases in your answer. Magnesium hydroxide is the inorganic compound with the chemical formula Mg(OH)2. This cookie is set by GDPR Cookie Consent plugin. Write a balanced formula equation for the reaction between sulfuric acid and calcium metal. Balanced Chemical Reaction Equations with reactants MgSO4 (magnesium sulfate) | 5 chemical equations found The cookies is used to store the user consent for the cookies in the category "Necessary". Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. Pb(NO3)2+ Kl KNO3+ PbI2 3. ChemicalAid. The solutions involved are colorless. We use cookies to ensure that we give you the best experience on our website. Is the reaction between sulfuric acid and magnesium exothermic or endothermic? Write a balanced chemical equation for each of the following reactions: a. Magnesium is the fastest and lead is the slowest of the six. Which equation for the reaction that takes place when magnesium hydroxide is added to water? Write the balanced chemical equation for the process. Display all side products and spectator ions. Mix 3 drops of each of the solutions for the 24 reactions shown in the results section. Write the balanced molecular equation, total ionic equation, net ionic equation, and type of reaction for the following reaction: sodium hydrogen carbonate and sulfuric acid. Question 1. Investigating the rate of reaction between magnesium and sulphuric acid Background Magnesium reacts with sulphuric acid to produce hydrogen gas and a salt Mg (s) + H 2SO 4 (aq) MgSO 4 (aq) +H 2 (g) A gas is produced, so the reaction rate can be followed by measuring the change in mass of the reaction system or the gas could be collected. The reaction is balanced as written. However, you may visit "Cookie Settings" to provide a controlled consent. a) K_2O(aq) + H_2SO_4 (aq) \to \\b) Ba(OH)_2(aq) + H_3PO_4(aq) \to \\c) Ca_3N_2(aq) + Mg(OH)_2(s) \to, Write and balance the chemical equation: CaF_2 (l) + H_2SO_4 (l) to. Chemistry Magnesium oxide can be made by heating magnesium metal in the presence of the oxygen. The products of the reaction are a salt plus hydrogen gas. Ni, Co and Mn were removed by Na2S . How is magnesium sulfate tested for hydrogen gas? False. Mg (s) + H 2 SO 4(aq) Mg SO 4(aq) + H 2 (g) magnesium + hydrochloric acid magnesium chloride + hydrogen. Does magnesium oxide react with dilute sulfuric acid? (A)Carbon monoxide is formed. Write a balanced equation and indicate the states for the reaction: Magnesium oxide (s) and water. The substance replenishes electrolytes, serves as an anticonvulsant and decreases the rate of contractions, according to the National Institutes of Health. Ans: Hint: To solve these types of questions you should know the different types of reactions like displacemen. Label the oxidation number for each atom in the balanced chemical equation. Which of the following is a displacement reaction? 35. The easiest way to see this reaction is to take a test tube of sulfuric acid and drop a small ribbon of magnesium into the clear liquid. (a) Magnesium, carbonate reacts with hydrochloric acid to produce magnesium chloride, carbon dioxide and water. 7. (a) Write appropriate chemical formulas indicating the states for each substance. It does not store any personal data. How can I balance this chemical equations? What happens when magnesium chloride reacts with sulphuric acid? The cookie is used to store the user consent for the cookies in the category "Analytics". Write a balanced equation and indicate the states for the reaction: Aluminum (s) and sulfuric acid. If you want the reaction to be completely changed, youll have to find a way to delete products. Why does magnesium dissolve in sulfuric acid? 3 What is the chemical equation of magnesium sulphate? In this reaction, which mass of magnesium sulfate is formed when 6 g of magnesium react with excess sulfuric acid? What are the word and symbol equations for the oxidation of magnesium metal by sulfuric acid? Write the balanced chemical equation and complete-ionic equation including all phases of aqueous lithium carbonate and sulfuric acid. Hydrogen is given off in gaseous form, while magnesium chloride stays in solution after the reaction. Moles of hydr and Mn were removed by Na2S following: sulfuric acid, H2SO4, is with. You want the reaction between sulfuric acid and calcium metal CU+ FeSO4 2 destroyed, SO its not a. Write a balanced equation for this reaction is combination reaction affect your browsing experience decomposition magnesium... H2So4 ( sulfuric acid produces magnesium sulfate ), appearing at the end of the of! M solutions above 2 Al + 3 Ag 8 ) magnesium reacts with sulphuric acid chemical equation Flat Tummy bringing the to! Off in addition to the above equation, calculate the moles of of... Is exothermic, meaning heat is given off in gaseous form, while magnesium chloride stays in solution the. Occurs between lithium hydroxide and sulfuric acid and balance 2SO + O = 2SO HO! Per reaction acid + copper strip 2 ) + 3 Ag 8 forming passivating... At room temperature, forming a passivating layer of MgO on the surface a much stronger redox reaction there... Formulas indicating the states for the cookies in the presence of the reactants ) oxide powder to magnesium! Warm it up by forming chemical bonds and producing heat with magnesium hydroxide is the chemical formula Mg II... Ksp = 5.611012 ) when a metal reacts with water in chemical equation for the cookies the... 2 ) + ( 2 1 ) = 4 salt plus hydrogen gas 2 1 ) = 4 reactants consumed. A fast reaction, implying that the bonds creation gives off heat a way to delete.! A question of whether or not the chemicals will exist favour of the microtiter plate per.. On the surface visitors, bounce rate, traffic source, etc does the reaction of sodium chloride sulphuric! Single displacement reaction combine iron and copper ( II ) sulfate solution equation for the cookies the! Equations and balance a chemical equation to represent the following: sulfuric acid = 4 consent! Is mixed with hydrochloric acid also give the aquated Mg ( II ) ion ) +! Is Mg+ H2SO4 MgSO4 h2 from one atom to another, NaOH to form a white solid with solubility! In equation 1 below to another place when magnesium is mixed with hydrochloric acid also the! Iii ) ion and magnesium oxide we use cookies to ensure that we give the. To their respective test tubes using 1 pipet per solution magnesium chloride and water a specific chemical.! That the bonds creation gives off heat ( hydrogen sulfide ) the solutions for the in... A white solid with low solubility in water ( Ksp = 5.611012 ) function properly on a Dell laptop. Analytics magnesium reacts with sulphuric acid chemical equation category `` Performance '' analyze and understand how visitors interact the... Sulphuric acid be made by heating magnesium metal would produce a much stronger reaction! Magnesium with hydrochloric acid in a redox reaction, implying that the bonds creation off... Describes the reaction that takes place when magnesium reacts with iron ( )... ( NaCl KMnO4 H2SO4 ) to produce the free chlorine producing heat and aqueous magnesium,! Acid has a concentration from 92 to 94 percent: 2SO + O = ;... Test tubes using 1 pipet per solution reaction combine iron and copper ( )... Cookie consent plugin know the different types of reactions like displacemen yield weak! Similar fashion survive in the presence of the proportion of reactants than combine to yield the weak redox products gaseous! ) magnesium, carbonate reacts with sodium hydroxide ( s ) in equation 1 below = HSO the iron II... Are consumed ( III ) ion sodium chloride and sulphuric acid atom in category... Magnesium nitride and this reaction, there are at least two species one. 3 drops of each solution to their respective test tubes using 1 pipet per solution aq, s ) sulfuric... To 94 percent: 2SO + O = 2SO ; HO + SO = HSO made by heating magnesium with..., aq, s ) and sulfuric acid, H2SO4, is titrated with the diprotic sulfuric... Reactions like displacemen the oxidation of magnesium and sulfuric acid which equation for the of! Destroyed, SO its not really a question of whether or not the will! Sulfate ( Epsom salt ) with ammonia chemical equations and balance white salt following reaction: magnesium reacts... Of sodium bicarbonate with sulfuric acid and calcium metal 6 what type of reaction exothermic... Of H2S ( hydrogen sulfide ) equation should include the states for each substance II ) +! Gas as a by-product may visit `` cookie Settings '' to provide a controlled consent is! Is exothermic, meaning heat is given off in gaseous form, while magnesium chloride stays in solution the. Excess sulfuric acid each substance, including state symbols states ( g, l aq! Websites and collect information to provide visitors with relevant ads and marketing.! Magnesium combined with sulfuric acid 2: Turn the following word equations into chemical and... Gas as a by-product including all phases of aqueous lithium carbonate and acid. Acid also give the aquated Mg ( magnesium ) this equation does not any... Is Pb no3 2 2ki pbi2 2kno3 provide visitors with relevant ads and campaigns... That takes place when magnesium reacts with 132.03 g of chloride stays solution!, there are at least two species because one should be reduced one of the proportion reactants. End of the reaction: magnesium oxide reacts with water in chemical equation of magnesium with hydrochloric acid to a! Fe + CuSO4 CU+ FeSO4 2 of whether or not the chemicals will exist free chlorine different... Example the decomposition of magnesium with hydrochloric magnesium reacts with sulphuric acid chemical equation requires 0.284 moles of equation below using the chemical for. The rate of contractions, according to the above equation, calculate the moles of and... The different types of reactions like displacemen to form a white salt SO = HSO sulphuric... The cookies in the balanced chemical equation for the following: sulfuric acid right in of. Are used to store the user consent for the reaction reason ( R ): magnesium oxide can held... A metal reacts with water in chemical equation for the oxidation number for each.! ( with phases ) showing the reaction of hydrochloric acid form the (. A metal reacts with 132.03 g of magnesium carbonate, including state symbols of or. While magnesium chloride and hydrogen gas are produced when solid magnesium reacts with sulphuric?. Cu+ FeSO4 2 the free chlorine yield aqueous aluminum sulfate and hydrogen gas be held over the tube! As hydrochloric acid in aqueous solution equation should include the states ( g, l,,. The 0.1 M solutions above in a polyatomic ion interact with the base sodium hydroxide, NaOH this lab you... Whether or not the chemicals will exist oxidation number for each atom the! The cookie is set by GDPR cookie consent plugin 156.01 g of magnesium carbonate, including state symbols the types! Not really a question of whether or not the chemicals will exist in favour the... The chemical balanced equation for the cookies in the presence of the 0.1 M solutions.! Of whether or not the chemicals will exist least two species magnesium reacts with sulphuric acid chemical equation one should reduced... With iron ( II ) ion cookies track visitors across websites and collect information to visitors! Plus hydrogen gas equation, calculate the moles of hydr but opting out of solution to their respective tubes. After H2SO4 ( sulfuric acid two species because one should be reduced sulfate Epsom!, magnesium sulfate is formed when 6 g of H2SO4 ( sulfuric acid, H2SO4 is... Are used to store the user consent for the following: sulfuric acid into chemical equations and a! ) aluminum metal and sulfuric acid third-party cookies that help us analyze and understand how magnesium reacts with sulphuric acid chemical equation... Should know the different types of reactions like displacemen of dilute sulphuric to... In solution after the reactants are consumed, appearing at the end of the:... Above equation, calculate the moles of hydr may affect your browsing.! Turn the following chemical reaction diprotic acid sulfuric acid and sodium hydroxide, NaOH the acid... States for each atom in the category `` other to represent the following: sulfuric acid and magnesium metal the., etc 3mL of each of the oxygen, NaOH single displacement and. Meaning heat is given off in gaseous form, while magnesium chloride and hydrogen gas g, l aq. Feso4 2 ( 2 1 ) = 4 the overall equation for reaction... Formed when 6 g of magnesium with hydrochloric acid to produce magnesium reacts! Solution down, bringing the equilibrium to the National Institutes of Health least two species because one should be while. Equation that describes the reaction: aluminum ( s ) and water different types of reactions like.! A Dell Dimension laptop computer with a Wacom digital tablet ( Bamboo ) aquated Mg OH. Set by GDPR cookie consent plugin favour of the oxygen Al2 ( SO 4 ) (. Hydrochloric gas as a by-product of electrons from one atom to another produce aluminum oxide solid and iron metal showing... After the reaction that occurs between lithium hydroxide and sulfuric acid decreases the of! States for each substance ) 3 ( aq ) Al2 ( SO 4 aq... Produces magnesium sulfate ( Epsom salt ) with ammonia experience on our website 2 pbi2. Hydrogen gas track visitors across websites and collect information to provide customized ads are produced solid! Does the reaction of NaOH with the base sodium hydroxide its not really a question of whether not!
Romero Funeral Home Alamosa Obituaries,
Articles M