# how many ions of iron are in iron ii phosphite

sulfate ion, phosphite ion ammonium ion) Polyatomic ions are made up of two or more elements (they will be non-metals). Summary Iron +II is reacted with o-phenanthroline to form a coloured complex ion. A Ca2+ cation has twice as much charge as a Cl- anion, so it will be able to attract and cancel out the charge on two Cl- anions. These are called polyatomic ions. Every element in the second column forms a cation with charge 2+. When the magnets push away from each other we're trying to force two like charges together. Iron phosphate has been registered for use in pesticide products in the United States since 1997. For example, consider the ionic compound between Na+ and Cl−. Adopted a LibreTexts for your class? The rules for naming binary ionic compounds are as follows: 1. Some studies have implicated increased sodium intake with high blood pressure; newer studies suggest that the link is questionable. Problem: How many bromide ions are in 0.55 g of iron(III) bromide? ... What is the formula for the compound iron(II) phosphite? When they do, they become monatomic ions. Thus, the formula between calcium ions, Ca2+, and nitrate ions, NO3−, is properly written Ca(NO3)2, not CaNO32 or CaN2O6. #÷¾½J¢\iÐûüÆ²£¬ªÄR2M Second, elements that live in the first two columns and the last three columns of the period table show a defininte trend in charges. Sodium is also present in our diet. 0.0329 moles FeSO4 has 0.0329 moles Fe+2. ¦¤ZÓþúÜBõp¦Ï´Ø$Q¨Ç­[UÐ¿ÿ"Ånxú´zú°ZÅBÕöIÆ"Â>ò4,E¦aÕá);ü_ÕôëüÅê¿O2 What is the formula MgCl2 telling us? «¬wPH&PýªÕÃ_m¨l[uÐÖÿ>Øþ¶zeV"ÉÃXÍD(zý´%Xßâ3®Rz»o9P?Àc@Þ zPe¿ æÁ¸H}½×µ½ñò§¡ÈúI8õË*Lï²1©°ðVuhæµö´Mr8ÊÂéÆa&²[°üß¤h)«ÂÜ½³Ì¢0¶/ýú è°KÍ£DäÐckû .C ¼(M%6¬Â$õáéÃw)¾6OÿÂÏ9L.2åD.lGdñù¨)ejâG¹÷ýÌt­öZütÃ¾9Oz. MELTING POINT: 1,535°C BOILING POINT: 2,750°C DENSITY: 7.874 g/cm 3 (at 20°C) MOST COMMON IONS: Fe 2+ , Fe 3+ Iron, believed to have been introduced on Earth by meteors, was found in Egyptian tombs dating from 3500 B.C.E. Do not use numerical prefixes if there is more than one ion necessary to balance the charges. This means that the two cobalt ions have to contribute 6+, which for two cobalt ions means that each one is 3+. 28. ô%»îiªzË¿0O¯ätVìØÛ¦âêß SFß2Ê85ß+uøuÆU¾nü#®þ®ævÀ2æÝÿÔþ,å:3YxÀ×,ÄëxB,ËYàïê ý.:@Ûþcèð3'j;õÀu]? Species with overall positive charges are termed cations, while species with overall negative charges are called anions. Usually sodium compounds are inexpensive, but, more importantly, most ionic sodium compounds dissolve easily. Figure $$\PageIndex{1}$$ shows some common ions in terms of how many electrons they lose (making cations) or gain (making anions), as well as their positions on the periodic table. The elements at the end of the periodic table do not form ions. In 1 mol of Fe(PO3)2 there are 2 mol of P. so 4.00 moles of Fe(PO3)2 will have 8.00 mol of P Answers: 1 Get Other questions on the subject: Chemistry. Iron is an essential mineral for plants and animals. This will be used as the stoichiometric ratio. (Remember from our conventions for writing formulas that we don’t write a 1 subscript if there is only one atom of a particular element present.) Iron(II) Phosphate. Examination of the table in the link given shows that there are some exceptions to the previous point. Although chlorine as an element is a diatomic molecule, Cl2, elemental chlorine is not part of this ionic compound. Most often polyatomic ions will have a negative charge but there a few with positive charges. The average person needs only about 500 mg of sodium every day; most people consume more than this—up to 10 times as much. 1+ 1-2+ 2-1+ Figure $$\PageIndex{2}$$: Food labels include the amount of sodium per serving. When atoms gain or lose electrons, they usually gain or lose a characteristic number of electrons and so take on a characteristic overall charge. The name of this ionic compound is simply calcium nitrate. 1- How many iron(II) ions, Fe^2+ are there in 5.00g of FeSO4. A proper ionic formula has a cation and an anion in it; an ionic compound is never formed between two cations only or two anions only. a. Fe3(PO3)2 28. The magnitude of the charge is listed as a right superscript next to the symbol of the element. Show all of the work needed to solve this problem. This problem has been solved! Groups of atoms can have an overall charge and make ionic compounds. It is conventional to use the lowest ratio of ions that are needed to balance the charges. Iron phosphate is a compound that combines phosphorous and oxygen with iron. This is the cobalt(II) cation. Why are sodium compounds used so much? In naming ionic compounds whose cations can have more than one possible charge, we must also include the charge, in parentheses and in roman numerals, as part of the name. We note from Table 3.4.1 that cobalt cations can have two possible charges, so the name of the ion must specify which charge the ion has. Unfortunately, there is little understanding which two charges a metal atom may take, so it is best to just memorize the possible charges a particular element can have. but how? In this case, there is a 2+ charge on the atom, so it is a cation. If the charge is a single positive or negative one, the number 1 is not written; if the magnitude of the charge is greater than 1, then the number is written before the + or − sign. Thus, Fe2+ is the iron two ion, while Fe3+ is the iron three ion. Some of them, such as nitrate and nitrite, and sulfate and sulfite, have very similar formulas and names, so care must be taken to get the formulas and names correct. For a cation, simply use the name of the element and add the word ion (or if you want to be more specific, add cation) after the element’s name. kateellen3977 kateellen3977 04/30/2018 Thus, if you commit the information in Figure $$\PageIndex{1}$$ to memory, you will always know what charges most atoms form. Generate a proper name for an ionic compound. Two ions with the same charge will push away from each other. õ Ions behave the same way on the atomic scale. So Na+ is the sodium ion; Ca2+ is the calcium ion. Unless otherwise noted, LibreTexts content is licensed by CC BY-NC-SA 3.0. Formula: Fe3(PO4)2. The formula Na2Cl2 also has balanced charges, but the convention is to use the lowest ratio of ions, which would be one of each. Such species are called ions. 6 C. 2.41 x 10^24 D. 123. HINT: What does the Roman numeral mean? The chlorine is in the form of a negatively charged ion, not the neutral element. A more complete table of ions and their charges can be found at Monotomic Ions of Various Charges. It is a common precursor to other iron compounds in research laboratory, but no applications exist for this compound. Other articles where Ferrous chloride is discussed: chemical compound: Binary ionic compounds: â¦contains Fe2+, is designated as iron(II) chloride. The answer is 357.477722. ¬ÙuÆJ/ÉânBµ×dZÈVäåñõJñî´À¼öÂp¸$Ó(ËF­dt®LÊã¾Ê¼QÆ#ñ¨;Æ3 7ä}§IµkãÃ¡¹;jRUjBF"¹û¤²ÍV£;ÕydËM°ÇÕ~9p½ õÍ´âe£Ydùû$+TsõªBml.ElÄ¬Ïu­tº%óª.dn]Ï­aÄLµÌ³tTnrÄZ_ è&ÃT[g;]Õäåd;"¾.Ì¹Ðø¾L«uVnÈsVÊ&;'YÝèh+kpøYäÿÉÏ²ËøíU£¤~SVÔA)½ÖÛfÉ]ât9c×¼>×3X¸­wî­ÿ/Ì=V ë"BhÛ®lÃí6Ú;±Ö When writing the ionic formula, we follow two additional conventions: (1) write the formula for the cation first and the formula for the anion next, but (2) do not write the charges on the ions. For a monatomic anion, use the stem of the element name and append the suffix -ide to it, and then add ion. There are several things to notice about the ions in Figure $$\PageIndex{1}$$. Reversible Binding of Oxygen The iron atom in heme binds to the 4 nitrogen atoms in the centre of the porphyrin ring, but this leaves two free bonding sites for the iron, one on either side of the heme plane. Exercise $$\PageIndex{4}$$ Write the proper formula and give the proper name for each ionic compound formed between the two listed ions. Chemical formulas for ionic compounds are called ionic formulas. A few elements, all metals, can form more than one possible charge. While Figure $$\PageIndex{1}$$  is helpful in determining the charge on a large number of our cations and anions it's hardly complete. First, each element that forms cations is a metal, except for one (hydrogen), while each element that forms anions is a nonmetal. If more than one polyatomic ion is needed to balance the overall charge in the formula, enclose the formula of the polyatomic ion in parentheses and write the proper numerical subscript to the right and outside the parentheses. How many bromide ions are in 0.55 g of iron(II) bromide? Use parentheses where required. By convention, the formula is MgO. (H 2 O) 2.These materials find few technical applications as well as occurring in â¦ Because the charges on the ions are characteristic, sometimes we have to have more than one of a cation or an anion to balance the overall positive and negative charges. endstream endobj 14 0 obj <>stream For example, the Iron (II) ion would be Fe 2+. The periodic table can be used to determine which elements are metals and nonmetals. How many iron (II) ions, Fe 2+ are there in 5.00 g of FeSO4? Fe3(PO3)2 Fe3(PO3)3 FePO4 FePO3 Fe3(PO4)2. Question 4-6 refer to : 3Ag(s) + 4HNO3(AQ) = 3AGNO3(aq) + NO(g) + 2h2o(l) 4. It is insoluable in water. Write the proper ionic formula for each of the two given ions. Iron(II) bromide is an inorganic compound with the chemical formula FeBr 2.The anhydrous compound is a yellow or brownish-colored paramagnetic solid. For more information contact us at info@libretexts.org or check out our status page at https://status.libretexts.org. Remember that ions are formed only when electrons move from one atom to another; a proton never moves from one atom to another. calculation. Only one of them, the ammonium ion, is a cation; the rest are anions. Fe (s) + H 2 SO 4 (aq) Fe 2+ (aq) + SO 4 2â (aq) + H 2 (g) If oxygen is present, some of the Fe(II) oxidizes to Fe(III). Two ions with opposite charges will be attracted to each other as being close to one another allows them to cancel out the additional charge they are carrying. How many grams of iron metal do you expect to be produced when 245 grams of an 80.5 percent by mass iron (II) nitrate solution reacts with excess aluminum metal? We know that cobalt can have more than one possible charge; we just need to determine what it is. I'm studying for my chemistry exam and i appreciate any help i can get, thank you since 1 mol FeSO4 has 1 mol Fe+2. If the element has more than one possible charge, the value of the charge comes after the element name and before the word ion. chemistry. A. Molecular compounds form between nonmetals and nonmetals, while ionic compounds form between metals and nonmetals. We assume you are converting between grams Iron(II) Phosphate and mole. Using the names of the ions, this ionic compound is named calcium chloride. Ions form when atoms lose or gain electrons. The proper formula is Fe 3 (PO 4) 2, and the compoundâs name is iron(II) phosphate. Because this species has no charge, it is an atom in its elemental form. The 2 subscript is in the ionic formula because we need two Cl− ions to balance the charge on one Mg2+ ion. So far, we have discussed elements and compounds that are electrically neutral. Cobalt (Co) is another element that can form more than one possible charged ion (2+ and 3+), while lead (Pb) can form 2+ or 4+ cations. Legal. The number of Fe(ii) ions that are in 10.0g of FeSO4 is 3.961 x10^22 ions. Spectrophotometric Determination of Iron Purpose To become familiar with the principles of calorimetric analysis and to determine the iron content of an unknown sample. To get 6+, we need three iron(II) ions, and to get 6â, we need two phosphate ions. find moles of FeSO4, using molar mass: 5.00 g FeSO4 @ 151.908 g/mol = 0.0329 moles FeSO4. The common table salt we use on our foods is an ionic sodium compound. An element symbol without a charge written next to it is assumed to be the uncharged atom. Write the proper formula and give the proper name for each ionic compound formed between the two listed ions. [ "article:topic", "cations", "anions", "ionic compounds", "ionic compound", "ions", "polyatomic ions", "showtoc:no", "Ionic Formulas", "license:ccbyncsa", "source-chem-64020" ], https://chem.libretexts.org/@app/auth/3/login?returnto=https%3A%2F%2Fchem.libretexts.org%2FCourses%2FLos_Angeles_Trade_Technical_College%2FDMA_Chem_51%2F2%253A_Beginning_Chemistry_(Ball)%2F03%253A_Atoms_Molecules_and_Ions%2F3.5%253A_Ions_and_Ionic_Compounds, https://commons.wikimedia.org/w/inde...curid=66743988, information contact us at info@libretexts.org, status page at https://status.libretexts.org, thickener, vegetable gum, stabilizer, gelling agent, emulsifier, preservative, antioxidant, bleaching agent. Bromine water oxidises iron(II) ions, Fe 2+ to iron(III) ions, Fe 3+. Specimen results Mass of iron tablets = 1.81 g Rough titre = 17.0 cm 3 Second titre = 16.7 cm 3 Third titre = 16.7 cm 3 Average of accurate titres = 16.7 cm 3 Volume of iron(II) solution used in each titration = 25.0 cm 3 Question: How Many Iron (II) Ions, Fe2+ Are There In 5.00 G Of FeSO4? How do you know whether a formula—and by extension, a name—is for a molecular compound or for an ionic compound? This allows processed food manufacturers to add sodium-containing substances to food mixtures and know that the compound will dissolve and distribute evenly throughout the food. Click here to let us know! Iron phosphate is used to fortify foods such as bread. They have the same number of electrons as protons, so the negative charges of the electrons is balanced by the positive charges of the protons. z5¾ÑÃ³øaÜbñÕ÷OË8,³â×Å¦$AÓ¦s÷~lÚveüløÚ¸G_¸OzøÕ"ã ]µ~ãûºUNÈæYüô­}M¤|'î"ñ2Hó0É³{½Kç­4aµKZRQ´t²2wgðgD|Aî{ ø­Õ~)ÃOÚV|Ó;5õËB| WS~.°\ÀÉ©{P¹ K¿a&^oÔgþãe17åÃWC.êá!º{ The formula for Iron (II) phosphite is {eq}Fe_3(PO_3)_2 {/eq}. Rather than write the formula MgClCl, we combine the two chloride ions and write it with a 2 subscript: MgCl2. The key to writing proper ionic formulas is simple: the total positive charge must balance the total negative charge. In print, we use roman numerals in parentheses to represent the charge on the ion, so these two iron ions would be represented as the iron(II) cation and the iron(III) cation, respectively. Do not use numerical prefixes in the name if there is more than one polyatomic ion; the only exception to this is if the name of the ion itself contains a numerical prefix, such as dichromate or triiodide. What is the formula for the compound iron(II) phosphite? find # of ions using avagadro's number: 0.0329 moles Fe+2 @ 6.02 e 23 particles / mol = 1.98 e 22 Fe+2 ions The heme group is located in a crevice The Hittites (in the area known today as Turkey) smelted iron from ore around 1500 B.C.E. Uncategorized; iron ii phosphite Written by on February 9, 2021 Naming an ion is straightforward. Iron(II) phosphite has the formula Fe3(PO3)2. For every mole of iron(II) chloride, there are 2 moles of chloride ions. It can kill slugs and snails when eaten. The formula is AlPO, Neither charge is an exact multiple of the other, so we have to go to the least common multiple of 6. a. The intensity of the coloured species is measured using a Spectronic 301 spectrophotometer. â For transition metals, we use Roman numerals to denote its charge. the ionic radius for na+ is 102 pm and for clâ is 181 pm. This species has a 2− charge on it, so it is an anion. There are two chloride ions in the formula. a. One side of each of our magnets is positive and one side of each of our magnets is negative. How many iron(ii) ions combine with oxygen to form iron(ii) oxide answer? When sodium atoms form ions, they always form a 1+ charge, never a 2+ or 3+ or even 1− charge. To balance the charges with the lowest number of ions possible, we need to have two chloride ions to balance the charge on the one magnesium ion. The proper formula is Fe. Ionic formulas balance the total positive and negative charges. See the answer. Every element in the first column forms a cation with charge 1+. This is actually one of the chemical properties of metals and nonmetals: metals tend to form cations, while nonmetals tend to form anions. The pH Compounds formed from positive and negative ions are ionic compounds. hÞ|YËã¶Ý÷W`I9-Á7½ÊÇvìøÄVî, Iron ions as a catalyst in the reaction between persulphate ions and iodide ions. porphine are highlighted in magenta, and the central iron atom is shown in red. The number of ions in the formula is dictated by the need to balance the positive and negative charges. The presence of Fe 3+ ions is confirmed by the formation of brown precipitate with sodium hydroxide solution. What is the name for the compound with the formula Sc(ClO4)3? A) 4.58 × 10^26 iron (II) ions B) 1.83 × 10^25 iron (II) ions C) 5.46 × 10^-26 iron (II) ions D) 1.98 × 10^22 iron (II) ions the answer is D, 1.98*10^22 iron (II) ions. How many grams Iron(II) Phosphate in 1 mol? Figure $$\PageIndex{1}$$: NaCl = Table Salt © Thinkstock The ionic compound NaCl is very common. The Relationship Between Iron and pH ... To further explain, there are 10 times as many hydrogen ions available at a pH of 7 than at a pH of 8, and 100 times as any at a pH of 6. Many processed foods also contain significant amounts of sodium added to them as a variety of ionic compounds. Again, no numerical prefixes appear in the name. Finally, most atoms form ions of a single characteristic charge. Figure $$\PageIndex{1}$$: Groups on the periodic table and the charges on their ions, By Homme en Noir - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/inde...curid=66743988. Several hydrates of FeBr 2 are also known, all being pale colored solids. Fe3(PO4)2 is a brown powder at room temperature. Enclosing the formula for the ammonium ion in parentheses, we have (NH, Because the ions have the same magnitude of charge, we need only one of each to balance the charges. Ionic compounds have a simple system of naming. Have questions or comments? This is similar to how we named molecular compounds. 1.1 x 1021 ions b. The chemical formula of iron(II) chloride is {eq}\rm FeCl_2 {/eq}. The naming of ionic compounds that contain polyatomic ions follows the same rules as the naming for other ionic compounds: simply combine the name of the cation and the name of the anion. Therefore, the proper name for this ionic compound is cobalt(III) oxide. However, there has been a push to reduce the amount of sodium most people ingest every day: avoid processed and manufactured foods, read labels on packaged foods (which include an indication of the sodium content), don’t oversalt foods, and use other herbs and spices besides salt in cooking. 3.4 x 1021 ions c. 3.3 x 1023 ions d. 9.9 x 1023 ions e. 2.9 x 1026 ions Some of them you may recognize after reading this chapter. We assume you are converting between moles Iron(II) Phosphate and gram. For the ionic compound between Mg2+ ions and Cl− ions, we now consider the fact that the charges have different magnitudes, 2+ on the magnesium ion and 1− on the chloride ion. ... Iron and phosphate ions are found in many foods naturally. The roman numeral in the name indicates that the iron has a 2+ charge. We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. III. Writing the formulas of ionic compounds has one important difference. Discussion: A. How many chloride ions will be found in the formula for cobalt(II) chloride? However, this is not always the case. Elements in the third to last column almost all form an anion with a 2- charge and elements living in the second to last column almost all form anions with a 1- charge. Changing of iron(II) ions to iron(III) ions. Naming ionic compounds is simple: combine the name of the cation and the name of the anion, in both cases omitting the word ion. You can view more details on each measurement unit: molecular weight of Iron(II) Phosphate or grams The molecular formula for Iron(II) Phosphate is Fe3(PO4)2. Its melting point is 180 ÌC (356 ÌF), density 2.61 g/cm3. You can view more details on each measurement unit: molecular weight of Iron(II) Phosphate or mol The molecular formula for Iron(II) Phosphate is Fe3(PO4)2. Alias: Ferrous Phosphate. Ionic compounds have positive ions and negative ions. Oxide always has a 2− charge, so with three oxide ions, we have a total negative charge of 6−. The use of so many sodium compounds in prepared and processed foods has alarmed some physicians and nutritionists. 1.1 x 102 ions b. Table $$\PageIndex{2}$$ lists the formulas, charges, and names of some common polyatomic ions. a. Construct a proper formula for an ionic compound. If you've ever tried to force two refrigerator magnets together you'll remember that there was one side of each magnet that clicked together and there was one side of each magnet that pushed against the other. MgO is magnesium oxide. The atomic radius of sodium is 186 pm and of chlorine is 100 pm. The LibreTexts libraries are Powered by MindTouch® and are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning Solutions Program, and Merlot. Thus, Cl− is the chloride ion, and N3− is the nitride ion. Note the convention for indicating an ion. Others you may not recognize, but they are all ionic sodium compounds with some negatively charged ion also present. It can be found in the environment, foods, and water. The toxicity of iron compounds like this depends on the amount of available iron. Write ionic charge based on the Roman Numeral in the name. This particular label shows that there are 75 mg of sodium in one serving of this particular food item. Simple ionic compounds such as sodium nitrite (NaNO2) are added to cured meats, such as bacon and deli-style meats, while a compound called sodium benzoate is added to many packaged foods as a preservative. NaCl is sodium chloride, a combination of the name of the cation (sodium) and the anion (chloride). In aqueous solution Fe(II) is present as the complex [Fe(H 2 O) 6] 2+. While there are many such ions in the world, you are responsible for knowing the ions listed in the following tables. Thus, for the compound between Na+ and Cl−, we have the ionic formula NaCl (Figure $$\PageIndex{1}$$). For Polyatomic Ions (e.g. 2 1 3 4. Fe3(PO3)2. 8 B. How many chloride ions will be found in the formula for cobalt(II) chloride? What is the charge on the silver ion in AgMnO4? MgCl2 is magnesium chloride—not magnesium dichloride. Because the ammonium ion has a 1+ charge and the sulfide ion has a 2− charge, we need two ammonium ions to balance the charge on a single sulfide ion. The element sodium, at least in its ionic form as Na+, is a necessary nutrient for humans to live. They argue that the average person consumes too much sodium from his or her diet. We'll learn more about why this is the case in future chapters but for the time being if you can learn this trend it's fairly easy to determine the charge on most of the elements we see.$ªòªw2Uxhk©1ð3,Ø&U©/I85>c Learn the characteristic charges that ions have. ; Fe 2+ ions lose their electrons and are oxidised to Fe 3+ ions. These polyatomic ions are extremely common in chemistry and thus it is important to be able to both recognize and name them. There also exists a group of ions that contain more than one atom. Click here ð to get an answer to your question ï¸ How many iron(ii) ions combine with oxygen to form iron(ii) oxide answer? Negative charges its name and is named and written first, using molar mass: 5.00 of! The formulas of ionic compounds are as follows: 1 the stem of the metal ion.! Use numerical prefixes appear in the area known today as Turkey ) smelted iron from around. Ion has one important difference formula FeBr 2.The anhydrous compound is simply calcium nitrate of chlorine is part. ; a proton never moves from one atom to another knowing the ions listed the... Than write the proper ionic formula for cobalt ( II ) phosphate and mole finally most... Calcium nitrate finally, most atoms form ions of a single characteristic charge this depends the... A right superscript next to the symbol of the element sodium, least... Of ionic compounds are as follows: 1 mg of sodium in one serving of this compound! } \ ) is present as the complex [ Fe ( H O! And then add ion many grams iron ( II ) phosphite = 0.0329 FeSO4... Ion would be Fe 2+ are there in 5.00 g FeSO4 @ g/mol... Determine what it is so it is a 2+ or 3+ or even charge... Between metals and nonmetals is more than one possible charge ; we just need determine. { eq } \rm FeCl_2 { /eq } combine the two chloride ions will found! ( II ) ion would be Fe 2+ a coloured complex ion to denote its.! Catalyst in the following tables atom in its formula than the -ate ion but with the formula (... Necessary nutrient for humans to live formula because we need two phosphate ions know cobalt! Next to the previous point 1 get other questions on the atomic scale formula Sc ( ClO4 3! Determine which elements are metals and nonmetals g of iron in an iron tablet the silver ion in?. Formulas balance the charges ( how many ions of iron are in iron ii phosphite ) and the anion ( chloride ) phosphite has formula. And to determine which elements are metals and nonmetals, while species with overall positive charges are termed,! Common table Salt we use Roman numerals to denote its charge iron a! 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