Iron 2 sulfide chemical formula. 19)iron (II) sulfate FeSO 4.

Iron 2 sulfide chemical formula In other words iron(II) cation is denoted as Fe 2 + ^{2+} 2 +. In plural, "iron sulfides" may refer to a range of chemical compounds composed of iron and sulfur. RRUFF Project. It is composed of two iron (Fe) atoms and three sulfur (S) atoms. This is pyrophoricIron(III) sulfide Fe2S3 . Which chemical formula It is derived from the fact that iron(II) has a +2 charge, and sulfur has a -2 charge, making a 1:1 ratio. 5x10 ng, Write the chemical formula iron(I) sulfate b. To write the formula for Iron (II) sulfite we’ll use the Periodic Table, a Common Let's once again start with the anion part of the molecule which is, in this case, sulfide - S X 2 − \ce{S^{2-}} S X 2 −. Iron(II) sulfide or ferrous sulfide (Br. When it comes to the anion, we have sulfide which is an anion of sulfur in which sulfur actually comes as S 2 − \text{S}^{2-} S 2 −. 000616 (18°C) Study with Quizlet and memorize flashcards containing terms like The difference between word equations, formula equations, and chemical equation, Write word and formula equations for the reaction in which aqueous solutions of sulfuric acid and sodium hydroxide reacts to form aqueous sodium sulfate and water, Translate the following chemical equations into sentences a. It naturally occurs as the minerals troilite and pyrrhotite [3]. 28)tin (II) sulfide SnS. It reacts with acids such as hydrochloric acid to make hydrogen sulfide gas. What is the molar mass in grams? f. FeS3 b. 18)iron (II) sulfide FeS. This means that the one iron ion must have a 2+charge. The formula for iron III sulfide is Fe 2 S 3. iron and sulfur producing iron (II) sulfide B. Write the formula of the compound tin(IV) sulfide. The simplest name, “iron chloride,” will, in this case, be ambiguous, as it does not distinguish between these two compounds. Sep 24, 2021 · FeCl2: Iron can also have more than one possible charge. Iron sulfide. 29)nitrogen Iron(II) sulfide is a chemical compound with the formula FeS. The name of anion is written after the name of cation. Therefore, iron(III) sulfide has a chemical formula of: F e X 2 S X 3 \ce{Fe2S3} Fe X 2 S X 3 Elements in Groups 8, 9 and 10 exhibit mostly +2 and +3 oxidation state. This simplifies to its correct formula PbO 2 for lead(IV) oxide. Roman numerals in the name of the cation suggest the charge of the cation. Unverified. Roman numeral (III) corresponds to a 2+ charge so the iron cation is written as Fe 2 + ^{2+} 2 +. E. What is the chemical formula for Iron(II) sulphide? Iron typically exhibits a charge of either 2+ or 3+ (see Figure 2 in Chapter 4. 26)tin (II) fluoride SnF 2. Pyrite is the most abundant sulfide mineral . [5] If the metal can form ions with different charges, a Roman numeral in parentheses follows the name of the metal to specify its charge. 1 2D Structure. May 7, 2021 · Iron sulfide (FeS) | FeS | CID 10290742 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities Jun 10, 2024 · The chemical formula of iron II sulfide can be written as FeS, which indicates the presence of one iron atom (Fe) and one sulfur atom (S). What is the percentage of sulfur atoms in iron (II) sulfide? e. a cation, and the nonmetal will form a negatively charged ion, i. H; Write the ionic equation for dissolution and the solubility product ( K s p ) expression for P b C l 2 , a slightly soluble ionic compound. 25)tin (IV) fluoride SnF 4. Sulfide anion is a sulfur ion with the formula S 2 − ^{2-} 2 −. a) melting of lead b) dissolving sugar in water c) tarnishing of silver d) crushing of stone e) dropping a penny into a glass of water, Of the following, ____ is the largest mass. The subscripts in this formula are not the smallest-possible whole numbers, as each can be divided by 2 to yield the empirical formula, NaCO 2. What is the chemical formula of Iron(ii) sulfide? Write the chemical formula for ferrous sulfide. Write the formula for iron (III) sulfide. In this video we'll write the correct formula for Iron (II) nitride (Fe3N2). Minerals Iron(III) sulfide, Fe 2 S 3; Iron-sulfur clusters, For the compound iron (II) sulfide, answer the following questions: a. Browse Iron(II) sulfide and related products at MilliporeSigma. It reacts with 1,10-phenanthroline to give the blue iron(II) derivative: Chlorine has two naturally occurring isotopes, X 35 X 2 2 35 C l \ce{^35Cl} X 35 X 2 2 35 Cl (isotopic mass = 34. Oct 10, 2023 · The incorrect name/formula pair is D: FeSO₃, iron (II) sulfite, as it should be iron (III) sulfite. When the chemical formula for a hydrated ionic compound is written, the formula for the ionic compound is separated from the waters of hydration by Jan 16, 2023 · The formulas for manganese(III) sulfide, iron(II) cyanide, potassium sulfide, and mercury(II) chloride are Mn2S3, Fe(CN)2, K2S, and HgCl2 respectively. Iron sulfides are often iron-deficie In such cases, the positive charge on the metal is indicated by a roman numeral in parentheses immediately following the name of the metal. Write the simplest formula for each of the following compounds. Fe3S2 e. It is made of iron and sulfide ions. It is a relatively unstable artificial black solid that decomposes and turns into a yellow-green powder at room temperature [2]. Iron(II) Sulfide molecular weight Molar mass of FeS = 87. 065g Sulphur/Sulfur 32. 20)iron (III) sulfate Fe 2 (SO 4) 3. If iron(II) sulfide is dissolved in water you can say that the equilibrium concentrations of iron(II) and sulfide ions are: A. Another incorrect pair is E: Fe₂(SO₄)₃, iron (III) sulfide; it should be iron (III) sulfate. Since the cation has a + 2 +2 + 2 charge while the anion has a − 1-1 − 1 Study with Quizlet and memorize flashcards containing terms like What is the correct name for PbO?, Which is the correct chemical formula for iron(II) sulfide?, What is the correct chemical formula for calcium chloride? and more. 5x10^15 pg d) 2. The mineral pyrite (/ ˈ p aɪ r aɪ t / PY-ryte), [6] or iron pyrite, also known as fool's gold, is an iron sulfide with the chemical formula Fe S 2 (iron (II) disulfide). 91 Melting point (°C): 1193 Solubility (g/100 g of solvent): hydrazine: reaction 9 (20°C) iron fused: miscible water: 0. As we can see from the name, in this molecule we have iron (II) as a cation. Right from the start, you should know that the metal will form a positively charged ion, i. The second part of the name is sulfide and it comes from sulfur. 910; Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file Learn about the formula for ionic compounds and how valence electrons play a role in their formation on Khan Academy. Remember that sulfur is a Group 6A element so it gains 2 electrons and forms an S 2 − ^{2-} 2 − anion. 2K (s) + 2H₂O (l ChemSpider record containing structure, synonyms, properties, vendors and database links for Troilite, 1317-37-9, Iron(II) sulfide, MBMLMWLHJBBADN-UHFFFAOYSA-N Iron (II) Phosphide: Fe 3 P 2: Iron (II) Arsenide: Fe 3 As 2: Iron (II) Oxide: FeO: Iron (II) Sulfide: FeS: Iron (II) Selenide: FeSe: Iron (II) Telluride: FeTe: Iron (II) Fluoride: FeF 2: Iron (II) Chloride: FeCl 2: Iron (II) Bromide: FeBr 2: Iron (II) Iodide: FeI 2: Iron (III) Nitrite: Fe(NO 2) 3: Iron (III) Nitrate: Fe(NO 3) 3: Iron (III Jun 8, 2024 · The chemical formula for iron (III) sulfide is Fe2S3. Study with Quizlet and memorize flashcards containing terms like Of the following, only ____ is a chemical equation. Iron sulfide or Iron sulphide can refer to range of chemical compounds composed of iron and sulfur. 87% P and 72. This formula highlights the ionic bond between the iron and sulfur atoms, where the iron atom donates two electrons to the sulfur atom, resulting in a stable compound. Pyrite is considered the most common of the sulfide minerals. Formula: FeS; Molecular weight: 87. This simple composition gives iron II sulfide its distinct properties, making it a valuable compound in fields such as metallurgy, chemical manufacturing, and the production of iron alloys. In this particular case we are asked to give the formula of an ionic compound with the name iron(II) sulfite. How many atoms are in one formula unit of this substance? c. The ferric ion has a chemical symbol of F e X 3 + \ce{Fe^3+} Fe X 3 +, while the sulfide ion has a chemical symbol of S X 2 − \ce{S^2−} S X 2 −. Iron sulfides are often iron-deficie If the metal can form ions with different charges, a Roman numeral in parentheses follows the name of the metal to specify its charge. 1 Structures. 2: The Air We Breathe. 19)iron (II) sulfate FeSO 4. Rule 3. e. Eisen(2+)disulfid [German] [ACD/IUPAC Name] Iron(2+) disulfide [ACD/IUPAC Name] Iron(II) disulfide. iron sulfite d. Chemistry. Typically iron(II) salts, like the "chloride" are aquo complexes with the formulas [Fe(H 2 O) 6] 2+, as found in ferrous ammonium sulfate. 23)magnesium nitrate Mg(NO 3) 2. 13% S by mass and has a molar mass of Nov 3, 2024 · Since the positive charge from iron (Fe 2 +) and the negative charge from sulfide (S 2 −) are equal in magnitude but opposite in sign, they combine in a 1:1 ratio to form the compound iron(II) sulfide. Greek prefixes are attached to the word "hydrate" to indicate the number of water molecules per formula unit for the compound (e. Chloride always has a 1− charge, so with two chloride ions, we have a total negative charge of 2−. g. IRON DISULFIDE. 1. Iron(II) sulfide. In practice, iron sulfides are often non-stoichiometric. sulphide) is one of a family of chemical compounds and minerals with the approximate formula Fe S. Sulfide anion is one of the sulfur ion with the formula S 2 − ^{2-} 2 −. The name of simple monoatomic anions contains the root of the element name followed by suffix -ide, eg. iron(II) sulfate c. ) is a nonmetal with an oxidation number of 2-. The Roman numeral III tells us iron has a +3 charge. iron and sulfur producing iron (III) sulfide 2. [5] The aquo ligands on iron(II) complexes are labile. an anion. Thus, FeCl 2 is iron(II) chloride and FeCl 3 is iron(III) chloride. FeS has iron in its +2 oxidation state. 5% of iron by Iron(II) sulfide or ferrous sulfide is one of a family of chemical compounds and minerals with the approximate formula FeS. Synonyms: Ferrous sulfide. 845g Iron 55. Formula in Hill system is Fe S: Computing molar mass (molar weight) To calculate molar mass of a chemical compound enter its formula and click 'Compute'. In chemical formula you may use: Any chemical element. The formula for iron(II) sulfide is FeS. ChemSpider record containing structure, synonyms, properties, vendors and database links for Iron(2+) sulfide (1:1), RZJRDYYQLPLQGM-UHFFFAOYSA-N This molecule is composed out of iron (II) cation (Fe 2 + \text{Fe}^{2+} Fe 2 +) and sulfide anion that has a chemical formula S 2 − \text{S}^{2-} S 2 − which means it is easy to combine the two in order to get the chemical formula of the compound. To write the formula for Iron (II) sulfide we’ll use the Periodic Table and follow Oct 14, 2021 · Troilite is a mineral with formula of Fe 2+ S 2-or FeS. Write the correct chemical formula for iron (II) sulfide? b. 5x10^9 fg e) 2. a) 25 kg b) 2. Based on the name, iron (II) nitrate, the ions are F e X 2 + \ce{Fe^2+} Fe X 2 + and N O X 3 X − \ce{NO3-} NO X 3 X −. Fe2S3; Ferrophosphorus (Fe2P) reacts with pyrite (FeS2) producing iron (II) sulfide and a compound that is 27. Given the options provided, the correct answer is: D) FeS In this video we'll write the correct formula for Iron (II) sulfate (FeSO4). Study with Quizlet and memorize flashcards containing terms like Which is the correct name for the compound FeS?, Which set of chemical name and chemical formula for the same compound is correct?, Sulfur hexafluoride is an example of a and more. The first thing to recognize here is that you're dealing with an ionic compound made up of iron, "Fe", a metal, and sulfur, "S", a nonmetal. Iron(II) sulfide contains iron(II) cation and sulfide anion. En este restaurante hay cosas positivas y cosas negativas. 31 terms. Iron(II) sulfide is an example of an ionic compound composed of {eq}Fe^{2+}{/eq} and {eq}S^{2-}{/eq} ions. Jan 20, 2025 · Ferrous sulfide (CAS 1317-37-9) information, including chemical properties, structure, melting point, boiling point, density, formula, molecular weight, uses, prices What is the correct formula for iron (II) sulfide? (You can use your periodic table of ions. Hydropyrite. For this case the roman numeral (III) tells us the iron has a charge of +3 or Fe^(+3) The the element sulfur has a charge of -2 or S^(-2) To balance these ion charges it takes What is the chemical formula for iron(III) sulfide? of sulfur and charge of sulfur becomes the subscript of iron and we have our chemical formula: Fe 2 _2 2 Jan 22, 2025 · Chemistry in Context Ch. For iron(III) sulfide, write down the For example, the ionic compound sodium oxalate is comprised of Na + and \(\ce{C2O4^2-}\) ions combined in a 2:1 ratio, and its formula is written as Na 2 C 2 O 4. 2K (s) + 2H₂O (l Write the correct formula and calculate the formula mass for iron(III) sulfide. CAS 1317-37-9. Iron (Fe) cation can have multiple charges (2+, 3+, 4+ or 6+, but in most cases it is either 2+ or 3+) but, in this case it has 2+ charge (because of the roman number II in the name of the compound). F e S 2. The IMA symbol is Tro. So correct formula for iron (II) is: F e X 2 + \boxed{\ce{Fe^{2+}}} Fe X 2 + Word Equation. The chemical symbol of an atom is used to determine its type. 9\times10-18. 22)magnesium nitride Mg 3 N 2. 'Sulfide' refers to the sulfur ion, which typically carries a -2 charge. A sulphide of iron contains 46. The formula has one Pb 4 + ion and two O 2− ions. FeS can be obtained by reacting iron and sulfur. If chlorine has an atomic mass of 35. Sulfide is, in this molecule, combined with iron (II) which is iron (that can be found in multiple oxidation states usually) in oxidation state 2+. For this case the roman numeral (III) tells us the iron has a charge of +3 or Fe^(+3) The the element sulfur has a charge of -2 or S^(-2) To balance these ion charges it takes A. Chemical: Iron sulfide (FeS) Jun 28, 2024 · Iron(II) sulfide is a fascinating chemical compound that plays a significant role in various fields, including geology, chemistry, and industry. Pyrite is sometimes called "Fools Gold" because of its similarity in color and shape to Gold. It’s an inorganic salt derived from the reaction of nitric acid and iron metal, and typically manifests as a light green or pale violet solid. Emma_Sandlin87 Pyrite is an iron sulfide with the chemical formula FeS 2 (iron(II) disulfide). In this video we'll write the correct formula for Iron (II) sulfide (FeS). Sulfite anion has 2-charge (S O X 3 Learn how to name monatomic ions and ionic compounds with Khan Academy's comprehensive guide. What elements are in FeS? This is the chemical formula of iron(II) sulfate. Pyrite | FeS2 | CID 14788 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards Using the absolute values of the charges on the ions as subscripts gives the formula Pb 2 O 4. iron sulfide When iron forms an ion with a plus three charge, what is the formula of a compound with iron (Fe3+) and sulfur (S)? a) Fe2S3 b) Fe3S2 c) S2Fe3 d) S3Fe2 iron(II) sulfide Group of substances: inorganic Physical appearance: hexagonal crystals Empirical formula (Hill's system for organic substances): FeS Structural formula as text: FeS Molar/atomic mass: 87. To write the formula for Iron (II) nitride we’ll use the Periodic Table and follo Mar 12, 2021 · In this video we'll write the correct formula for Iron (II) sulfite (FeSO3). Sulfur is in family VIA, which means it gains two chemical compound ChemSpider record containing structure, synonyms, properties, vendors and database links for Troilite, 1317-37-9, Iron(II) sulfide, MBMLMWLHJBBADN-UHFFFAOYSA-N Jun 8, 2024 · The chemical formula for iron (III) sulfide is Fe2S3. Calculate the molar mass of Iron(II) Sulfide in grams per mole or search for a chemical formula or substance. Therefore the cation in this molecule is F e X 2 + \ce{Fe^{2+}} Fe X 2 +. Now, grab a periodic table and look for sulfur. What is the chemical formula of Hydrogen sulphide? Q. Iron(III) sulfide is composed of the ferric ion and the sulfide ion. S 8 (s) + 8Fe (s) → 8FeS (s) Oct 14, 2021 · Iron(3+) sulfide | Fe2S3 | CID 160957 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities Jun 11, 2024 · FeS2 is the chemical formula for iron and sulfur. Iron can be found in multiple different oxidation states however here it is present as Fe 2 + \text{Fe}^{2+} Fe 2 +. 5x10^-2 mg c) 2. Thus Cu + is copper(I) (read as “copper one”), Fe 2+ is iron(II), Fe 3+ is iron(III), Sn 2+ is tin(II), and Sn 4+ is tin(IV). When naming, in order to be more specified, we use a Roman numeral. Iron sulfides are often iron-deficient non-stoichiometric . 15 = A*t + B*t 2 /2 + C*t 3 /3 + D*t 4 /4 − E/t + F − H Jul 15, 2016 · Iron(II) sulfide. Formula: FeS; Molecular weight: Chemical structure: H° − H° 298. 91. fool's gold. 2 Ionic and Molecular Compounds), and the two corresponding compound formulas are FeCl 2 and FeCl 3. chloride, fluoride, oxide, sulfide, hydride, etc. This is not the accepted formula for Iron (II) Nitrate, known by its chemical formula as Fe(NO 3) 2, is a significant inorganic compound that is frequently utilized in various scientific and industrial processes. Iron(II) sulfide, also popular as iron sulfide or ferrous sulfide, is an inorganic, water-insoluble compound represented by the chemical formula FeS [1, 2]. (Hint: convert the masses below to moles, and then calculate the mol ratio to find the chemical formula. Iron(II,III) sulfide is a blue-black (sometimes pinkish [citation needed]) chemical compound of iron and sulfur with formula Fe 3 S 4 or FeS·Fe 2 S 3, which is much similar to iron(II,III) oxide. What is the chemical formula for titanium (IV) sulfide? (a) T i S (b) T i S 2 (c) T i 2 S (d) T i 4 S (e) T i S 4; Write the chemical formula for the compound copper(I) sulfide. Capitalize the first letter in chemical symbol and use lower case for the remaining letters: Ca, Fe, Mg, Mn, S, O, H, C, N, Na, K, Cl, Al. The name of the compound is iron(II) sulfide because the iron ion has a charge of 2+. 5x10 ng, Write the chemical formula Study with Quizlet and memorize flashcards containing terms like The difference between word equations, formula equations, and chemical equation, Write word and formula equations for the reaction in which aqueous solutions of sulfuric acid and sodium hydroxide reacts to form aqueous sodium sulfate and water, Translate the following chemical equations into sentences a. The correct chemical formula for iron (II) sulfide is _____. 15 = A*t + B*t 2 /2 + C*t 3 /3 + D*t 4 /4 − E/t + F − H The chemical formula is {eq}FeS{/eq}. 27)tin (IV) sulfide SnS 2. , Ba(OH) 2 •8H 2 O; 8 water molecules = " octahydrate"). Jan 12, 2024 · The chemical formula FeS represents the composition of iron (II) sulfide, indicating the presence of one iron (Fe) atom and one sulfur (S) atom in each molecule. What is the correct formula for iron (III) sulfide? a. Marca con una X las oraciones positivas. What is the formula weight in amu? d. A Roman numeral that corresponds to a 2+ charge is iron (II) and for a 3+ charge, iron (III). It is the sulfur equivalent of the iron oxide magnetite (Fe 3 O 4). Iron(Ii) Sulfide Element Mass Percent Iron 55. To write the formula for Iron (II) sulfate we’ll use the Periodic Table, a Common The Solubility Product Constant for iron(II) sulfide is 4. The molecular formula of iron(II) sulphide is: A. The Iron(II) sulfide is a chemical compound with the formula FeS. 845g Sulphur/Sulfur 32. Thus, the formula for iron(II) sulfide is simply FeS. ChemSpider record containing structure, synonyms, properties, vendors and database links for Iron(II) sulfide, iron sulfide, GNVXPFBEZCSHQZ-UHFFFAOYSA-N Jun 9, 2024 · What is the chemical formula for Iron(II) sulphide? There are a number of compounds that could be called iron sulfide. To determine its chemical formula, we have to find the correct ratio of the cation and the anion so that the charges balance each other out. Charges of ions are balanced in every chemical formula. As established by X-ray crystallography, the S anions form a cubic close-packed lattice, and the Fe cations occupy both tetrahedral and octahedral sites. Three moles of Hematite [Fe 2 O 3] and one mole of Iron(Ii) Sulfide [FeS] react to form seven moles of Iron(Ii) Oxide [FeO] and one mole of Sulfur Dioxide [SO 2] Iron sulfide is the chemical compound FeS, a black solid. In IUPAC nomenclature, it is called sulfanylideneiron [1]. Some compounds contain polyatomic ions; the names of common polyatomic ions should be memorized. 24) diboron hexafluoride B 2 F 6. 21) iron (III) nitrate Fe(NO 3) 3. Iron(II) sulfide FeS. 9689 amu) and X 37 X 2 2 37 C l \ce{^37Cl} X 37 X 2 2 37 Cl (isotopic mass = 36. Iron(II) sulfide or ferrous sulfide (Br. FeS d. Therefore, the proper name for this ionic compound is iron(II) chloride. 065g Fe(S) # of Atoms Iron 1 Iron 1 Sulphur/Sulfur 1 Sulphur/Sulfur 1 🛠️ Calculate Molar Mass Iron(iii) sulfide also called ferric sulfide or iron sesquisulfide is one of the members of iron(3+) sulfides with IUPAC name iron(3+) trisulfide and chemical formula Fe 2 S 3 [1, 2]. It occurs naturally as the sulfide mineral greigite and is magnetic . Fe2S c. Write the chemical formula for iron(II) sulfide. Powdered iron sulfide is pyrophoric. Molecular Weight 87. Jul 9, 2016 · The molecule formula is Fe_2S_3 The molecule iron (III) sulfide is an ionic molecule between the metal Iron and the non-metal sulfur. iron persulfide. iron disulphide. 91 g/mol Iron(II) sulfide belongs to the group of ionic compounds. 9659 amu). Made up of iron and sulfur, this compound is known for its dark, metallic appearance and is commonly found in the natural environment, especially within the earth’s crust. Iron(II) sulfide or ferrous sulfide is one of a family of chemical compounds and minerals with the approximate formula FeS. iron(II) chloride Greigite, with the chemical formula Fe 2+ Fe 3+ 2 S 4, is a mixed valence compound containing both Fe(III) and Fe(II). A chemical formula is a symbolic expression that represents the number of atoms in a molecular substance. In an ionic molecule the formula is determined by balancing the charges on the ions. The correct chemical formula for iron(II) sulfide among the options given is FeS. Iron sulfide (FeS2) Iron sulfide Iron(II) sulfide belongs to the group of ionic compounds. ) May 22, 2024 · The chemical formula for iron(II) sulphate is FeSO4, for iron(III) sulfate is Fe2(SO4)3 The formula for iron(II) sulfide is FeS, iron(III) sulfide Fe2S3 Pyrite is an iron sulfide with the chemical formula FeS 2 (iron(II) disulfide). An older system of nomenclature for such cations is still widely used, however. Hematite + Iron(Ii) Sulfide = Iron(Ii) Oxide + Sulfur Dioxide. . You'll find it Roman numeral (II) corresponds to a 2+ charge so the iron cation is written as Fe 2 + ^{2+} 2 +. 12068-85-8 [RN] 1309-36-0 [RN] 1317-66-4 [RN] 235-106-8 [EINECS] 23949-99-7 [RN] 58440-06-5 [RN] FERROUS DISULFIDE. 'Iron(II)' means that the iron ion has a charge of +2. 4527 amu, what is the percent abundance of each isotope? Aug 10, 2023 · The chemical name for chalcopyrite is copper iron sulfide, with the chemical formula CuFeS2. oqok ygxlxs gkisi vmdd hwwkg wgvacc aybw yfkgd ooaksd hgt jyh gdx lkutk ykq fedbmqcb