Formula of magnesium chloride. 20g/L. "Mg: " 0. 453 cancel "g") = "0. 3[Mg]2+ +2[N]3− → Mg3N2. Magnesium readily dissolves in acids and forms solutions that have both the Mg21 ions and hydrogen gas. 22×10²⁴ atoms of Cl. Chlorine is a Halogen in the 17th column or p5 group. Bonus problem: A hydrate of magnesium chloride is present and the following data is collected: mass of crucible = 22. 1 / 4. Consequently, MgCl2 is used as the chemical symbol Apr 24, 2017 · Magnesium chloride is the chemical compound with the formula MgCl2. Average mass 95. Reaction thermochemistry data. View Available Hint (s) IVO AEO ? x х Based on the number of sodium chloride and magnesium chloride formula units obtained in Question 2 above, calculate the concentrations of each saturated salt solution using Avogadro's number, which states that 1 mol of something contains 6. 986130 Da. com magnesium;dichloride: Formula Weight: 95. It is soluble in water and alcohol. Condensed phase thermochemistry data. In this example the electrons are shown as dots and crosses. Step 2 — Interchange the how many formula units make up 15. Magnesium chloride can be prepared by reacting hydrochloric acid with magnesium metal, though this reaction is highly exothermic and magnesium metal is expensive. 6H 2 O. How many formula units make up 22. Answer Step 1: Calculation of moles Given, mass of MgCl2 = 31 g molar mass of MgCl2 = 95. 2 g of magnesium chloride (MgCl2)? Express the number of formula units numerically. Oct 29, 2021 · #tutorials #chemistry #lessonsIn this Chemistry learning video, we will focus on drawing dot and cross diagram of ionic compound, magnesium chloride. View Available Hint (s) I AZO ? formula units of MgCl2. Notes. 95. Solubility formula: MgCl 2 Mg 2+ + 2Cl -. 100% (2 ratings) Aug 2, 2017 · 1 Answer. 8 g of magnesium chloride (MgCl2)?, Calculate the number of moles of Cl atoms in 1. 305 cancel"g") = "0. Information on this page: Gas phase thermochemistry data. ChemSpider ID 23046. How many families can you identify among these salts? Our expert help has broken down your problem into an easy-to-learn solution you can count on. how many formula units make up 38. Jun 30, 2023 · The question arises as to why, from an energetics point of view, magnesium chloride is MgCl 2 rather than MgCl or MgCl 3 (or any other formula you might like to choose). Step 1 — Write each symbol with its valency. Word Equation. 20×1024 formula units of magnesium chloride, MgCl2. It is an odorless compound with high Magnesium chloride hexahydrate. A Revier Correct Part C How many formula units make up 31. 96g and Cl is 2. IUPAC Standard InChIKey: FOSCDBCOYQJHPN-UHFFFAOYSA-M Copy CAS Registry Number: 14989-29-8 Chemical structure: This structure is also available as a 2d Mol file; Permanent link for this species. 01\times10^24 for Part B Calculate the number of moles of Cl atoms in 3. M gCl2 is the molecular formula of magnesium chloride. Melting point of Magnesium Chloride. View the full answer. This means that calcium has 2 valence electrons it readily gives away in order to seek the stability of the octet. 1 mole is equal to 1 moles Magnesium Chloride, or 95. Aluminum chloride and phosphorus (V) chloride are more complicated. Magnesium hydroxychloride [1] is the traditional term for several chemical compounds of magnesium, chlorine, oxygen, and hydrogen whose general formula xMgO·yMgCl2·zH2O, for various values of x, y, and z; or, equivalently, Mgx+y(OH)2xCl2y(H2O)z−x. Molecular Formula HClMgO. 32 g/cm 3 (anhydrous) Boiling point of Magnesium Chloride. Chlorine is an halogen; it comes from Group 17 of the Periodic Table, and thus it has SEVEN valence electrons and it is oxidizing; it thus commonly forms a #Cl^(-)# ion magnesium chloride. The molar mass is 95. 4 g of magnesium chloride ( MgCl2 )? Express the number of formula units numerically. It can be prepared by heating hydrated magnesium chloride crystals in a current of dry hydrogen chloride or by heating magnesium ammonium chloride. 50% oxygen by mass. Canagliflozin: Canagliflozin may decrease the excretion rate of Magnesium chloride which could result in a higher serum level. b) Silver nitrate . 81×1024 formula units of magnesium chloride, MgCl2. nill (antimony is less reactive than magnesium) Chemical formula of magnesium chloride is MgCl2. So, number of formula units will be present in of magnesium chloride. Average mass 203. Jun 29, 2020 · Explanation of how to find the molar mass of MgCl2 • 6H2O: Magnesium chloride hexahydrate. Molecular Formula ClMg. Part C How many formula units make up 14. This ionic salt loves water, and will "suck it out of the air" to form MgCl2(H2O)x as How many formula units make up 18. This means it consists of one magnesium atom and two chloride atoms. 022 × 1 0 23 of those things. ChEBI. These work by an osmotic laxative effect 2. Chlorine is in group 7 of the periodic table. 41×1024 formula units of magnesium chloride, mgcl2. Magnesium chloride can cause a decrease in the absorption of Calcium phosphate dihydrate resulting in a reduced serum concentration and potentially a decrease in efficacy. The formula of Magnesium chloride will be : Name of elements: Magnesium chloride. This salt is found in as a dihydrated salt with the formula MgCl 2 . Molecular weight calculation: 24. It can naturally be obtained via the solar evaporation of seawater. This compound is also used in biochemistry as well as in some cooking May 15, 2023 · Magnesium chloride is an ionic compound with the general formula MgCl2 M g C l 2. The SI base unit for amount of substance is the mole. Valency of elements: 2 1. 21: Percent Purity: ≥98. moles Magnesium Chloride to grams. 3 × (2 +) = 6 + and 2 × (3 −) = 6 −. Anhydrous magnesium chloride crystallizes Your solution’s ready to go! Our expert help has broken down your problem into an easy-to-learn solution you can count on. Other data available: Gas phase thermochemistry data. - Charge. For complete formula, write the numerals in the subscript of the symbols of elements. Number of atoms present Table 7. A weighed sample of magnesium metal will be allowed to react with hydrochloric acid to form magnesium chloride. The number of moles of Cl in 3. In this article, we are going to discuss about magnesium chloride formula, its preparation, properties and Jun 30, 2023 · PCl 3. Compute Mass of Each Element. Therefore, there are 7. 2: Unknown Magnesium Chloride Hydrate Calculated versus literature X Quality of Data 3 Unrounded A Y x (MgCl₂) y (H₂O) Using the number of moles of magnesium chloride anhydrate and water, determine the empirical formula for magnesium chloride hydrate. 4 g of magnesium chloride (MgCl2)? Express the number of formula units numerically. This salt is commonly used as a de-icer agent; the solution of magnesium chloride is sprayed on the road pavement to prevent snow and ice adhering. Molar mass of MgCl2 = 95. Magnesium dichloride hexahydrate is a hydrate that is the hexahydrate form of magnesium dichloride. , Ascorbic acid (vitamin C) contains 40. Potassium sulphate, sodium sulphate, calcium sulphate, magnesium sulphate, copper sulphate, sodium chloride, sodium nitrate, sodium carbonate and ammonium chloride. Molar solubility: 0. Dec 19, 2023 · Magnesium Chloride or Magnesium Dichloride or Chloromagnesite is a chemical compound with the molecular formula MgCl2. The mass of Cl reacting with the Mg will be found Symbols used in the table of constants; Symbol Meaning; State: electronic state and / or symmetry symbol: T e: minimum electronic energy (cm-1): ω e: vibrational constant – first term (cm-1) The symbol of magnesium is ‘Mg’, having a valency of 2 +. HINT: Begin by determining the number of mols of sodium chloride and Aug 10, 2023 · What is the chemical formula of magnesium and chloride? Magnesium chloride has MgCl2 as its chemical formula. 130 g = 3. Magnesium chloride crystals can be either hydrated or Magnesium chloride (MgCl2) | Cl2Mg | CID 24584 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological Jun 1, 2017 · Magnesium is an alkaline earth; it comes from Group 2 of the Periodic Table, and thus it has TWO valence electrons and is reducing; it thus commonly forms a #Mg^(2+)# ion. Convert grams Magnesium Chloride to moles. MgCl_2 is the molecular formula of magnesium chloride. 61×10²⁴ formula units of magnesium chloride will contain 2 × 3. Mg + 2 HCl → MgCl 2 + H 2. Simplify the formula by dividing with the common factor of the valencies. 25 · 1025 f Submit Previous Answers moles Express your answer in moles to Step 3 — Write the interchanged number, ignore equal numbers & hence the formula. 11 g/mol) / (13. Now the positive and negative charges are balanced. or. Information on this page: Notes. The symbol of choride is ‘Cl’ with valency 1-. The the molar mass of an element is equal to the atomic weight. 2 g of magnesium chloride ₂ ( MgCl ₂) , first determine the molar mass of ₂ MgCl ₂ . 290 g − 22. Sodium chloride exists in the aqueous solution while magnesium hydroxide is precipitated in the bottom of the solution after sometime. 51: kJ/mol: Review: Chase, 1998: Data last reviewed in March, 1966: Quantity Value Units Method Reference Comment The formula for an ionic compound must contain the same number of positive and negative Sodium chloride contains Na Magnesium oxide contains Mg 2+ and O 2-ions: this is two positive You can view more details on each measurement unit: molecular weight of Magnesium Chloride or mol The molecular formula for Magnesium Chloride is MgCl2. To find the number of formula units in 14. 0 g of magnesium chloride (MgCl2)? Express the number of formula units numerically. Oct 25, 2015 · MgCl_2 Given that the weight of Mg is 0. 0% (on dry substance) How many formula units make up 32. Question: How many formula units make up 39. Sep 17, 2017 · From the chemical formula for magnesium chloride MgCl₂, Each formula units of magnesium chloride contains 2 Cl atoms . What is the complete formula of this hydrate? Solution: 1) Mass of hydrate: 25. 21 g/mol. Cl (Chlorine) 2 × 35. molC per 1 mol C18H32O2 QUESTION3. Calculate the molar mass of magnesium chloride (MgCl2). In water it dissociates to ions: a cation of magnesium (Mg 2+) and two anions of cloride (Cl - ). magnesium chloride. Multiplying the empirical formula by 6 gives the molecular formula of benzene, (CH) X 6 or C6H6. Nov 10, 2016 · Number of formula units of magnesium chloride = By applying unitary method, we get: If number of formula units are present in 1 mole of a compound. For a little metal magnesium (Mg) in the bottom of the test tube, add 1-2 ml of acid Calculate the number of moles of Cl atoms in 1. 211 Da. The chemical formula shows that one molecule of Magnesium Chloride Hexahydrate consists of one Magnesium (Mg) atom, two Chlorine (Cl) atoms, and six Example #3: A hydrate of magnesium chloride is present and the following data is collected: mass of crucible = 22. 211 g/mol (anhydrous) The density of Magnesium Chloride. Magnesium has a tendency to release two electrons. Study with Quizlet and memorize flashcards containing terms like How many formula units make up 39. From the increase in mass you will be able to calculate the composition of magnesium chloride and hence its empirical formula. Problem 11QAP: Calculate the mass in grams of 3. Therefore, we get. QUESTION1. 20 x 1024 * (1 …. Using a periodic table, find the molar mass of each element. 2. 92% carbon, 4. 01x1024 formula units of magnesium chloride, MgCl2. The chemical formula of Magnesium Chloride Hexahydrate is MgCl 2. The IMA symbol is Bsf. The Ionic Bond formation for Magnesium Chloride. Formula: Cl 2 Mg. Shop Magnesium chloride, pure, Thermo Scientific Chemicals at Fishersci. Information on this page: Solid Phase Heat Capacity (Shomate Equation) References. QUESTION2. Calculate the number of moles of Cl atoms in1. 95% (21 ratings) 1. CAS Registry Number: 7786-30-3. Molecular weight: 95. This compound is highly soluble in water and exists as a white crystalline solid at room temperature. 3% Magnesium (Mg) requires just a few easy steps. 23. moles of H atoms. Magnesium chloride is an inorganic compound with the chemical formula MgCl2. M gCl2 is the molecular formula. Example: Water has the chemical formula H 2 O, indicating that it is a compound made up of two parts of hydrogen and one proportion of oxygen. 61×1024 formula units of magnesium chloride, mgcl2. H 2 O and molecular mass 203. 1 day ago · The Main Chemical Properties of Magnesium Chloride are Highlighted Below. 31 g/mol hexahydrate, is the molar mass of the Magnesium Chloride. 8 g of magnesium chloride (MgCl2)? The Magnesium Chloride Formula has a +2 charge. When reacted with bases, magnesium form basic hydroxide solutions. 96 cancel "g" xx "1 mol"/(24. It is composed of one magnesium ion (Mg2+) and two chloride ions (Cl–). 4. Ksp: You can view more details on each measurement unit: molecular weight of Magnesium Chloride or grams The molecular formula for Magnesium Chloride is MgCl2. 453 = 70. The hydrated magnesium chloride can be extracted from brine or sea water. It is an inorganic chemical compound with the formula M g C l 2. Magnesium forms ions with a 2+ charge, and nitrogen forms nitride ions with a 3- charge. The magnesium chloride formula is MgCl2. It contains a magnesium dichloride. Canrenoic acid In this experiment you are to determine the empirical formula for magnesium chloride. Find step-by-step Chemistry solutions and your answer to the following textbook question: Calculate the number of moles of cl atoms in 3. 395 mol" "Cl: " 2. Here’s the best way to solve it. Aluminum chloride also exists under some conditions as a dimer, Al 2 Cl 6. Ace Chem You will know different atoms and their number in a Magnesium Chloride Hexahydrate molecule from the chemical formula. Chlorine has a charge of -1 while being willing to accept one electron. Monoisotopic mass 201. Monoisotopic mass 93. 01 × 10 A 24 . Gas phase ion energetics data. 6 g of magnesium chloride ( MgCl2 )? Express the number of formula units numerically. 2 × 3. 100% (1 rating) View the full answer. 8g of magnesium chloride (MgCl2) Here’s the best way to solve it. The simple chemical formula that is often used is Mg (OH)Cl, which appears in high school Chemistry questions and answers. We will find the formula of magnesium chloride by criss-cross method in 3 easy steps. Applications of Magnesium Chloride are as follows: Magnesium chloride is an important chemical for preventing wind erosion, controlling dust, and stabilizing soil. Step 1. 453*2. The structures: Sodium chloride and magnesium chloride are ionic and consist of large ionic lattices at room temperature. This makes calcium a #Ca^(+2)# cation. Multiply the number of atoms by the atomic weight of each element found in steps 1 and 2 to get the mass of each element in MgCl2: Molar Mass (g/mol) Mg (Magnesium) 1 × 24. 491 grams. 58% hydrogen, and 54. In addition, magnesium chloride is applied to bare soil regions and highways. Question: How many formula units make up 30. Nov 5, 2022 · Preparation. Magnesium Chloride Formula. View Available Hint (s) VO t o ΑΣΦ ? 1. ∴ 3. 84 cancel "g" xx "1 mol"/(35. ChemSpider ID 22987. The atomic number of chlorine is 17 so its electronic configuration is 1 s 2 2 s 2 2 p 6 3 s 2 3 p 5. The purpose of this experiment is to determine the empirical formula of magnesium chloride by reacting mag- nesium with hydrochloric acid. It is very hygroscopic in nature. Express your answer as an integer. Magnesium Chloride is an ionic salt that is highly soluble in water. Thus, NaCl is the chemical formula for sodium chloride, which is a concise way of describing the relative number of different ions in the compound. The total charge is then reduced to zero. The atomic number of magnesium is 12 so its electronic configuration is 1 s 2 2 s 2 2 p 6 3 s 2. MgCO 3 + 2 HCl → MgCl 2 + H 2 O + CO 2. How many formula units make up 20. 906. Procedures: Magnesium will be reacted with hydrochloric acid. Magnesium is in group 2 of the periodic table. For the given compound magnesium chloride: As, 1 mole of magnesium chloride contains 1 mole of magnesium atom and 2 atoms of Lets take the ionic formula for Calcium Chloride is #CaCl_2# Calcium is an Alkaline Earth Metal in the second column of the periodic table. 22×10²⁴ atoms of Cl in the 3. 211 g/mol anhydrous, and 203. Determine the Molar Mass of Each Element. Expert-verified. Fill Out the Form for Expert Academic Guidance! Finding the empirical formula of a substance with a percent composition of 75% Chlorine (Cl), 25% Magnesium (Mg) requires just a few easy steps. 211 g/mol on substituting the va …. Jan 25, 2023 · Magnesium chloride is an alkaline earth metal halide. 211 grams. Magnesium Chloride. 2 g of magnesium chloride (MgCl2)? Here’s the best way to solve it. 02 g/mol) = 6 empirical units. Formula of Magnesium chloride : M g C l 2 \bold{MgCl_2} MgC l 2 (b) Calcium oxide. Sulfur forms three chlorides, but S 2 Cl 2 is most common. Question: How many formula units make up 26. Also known as chloromagnestite, magnesium chloride is a colorless crystalline solid. 839 moles of (a) hydrazine, a rocket propellant. . Feb 8, 2023 · Magnesium chloride is a type of salt that is a combination of magnesium and chloride. Apr 12, 2024 · Magnesium supplements, particularly magnesium citrate, sulfite, hydroxide, and oxide, are thought to be an effective treatment for occasional constipation. . A chemical formula is a formula that represents an element's quantitative proportion in a compound. A magnesium atom will lose 2 electrons to form a stable 2 + ion. Therefore, the numerical value of the positive and negative charge must be 6. Step 1 – Write the formula of magnesium chloride: Symbol Valency. 31 g/mol, being it the most common form. In the case of sodium chloride, the ratio of sodium ions to chloride ions, expressed in lowest whole numbers, is 1:1, so we use NaCl (one Na symbol and one Cl symbol) to represent the compound. 8 g of magnesium chloride (MgCl₂)? Express the number of formula units numerically. We could write the chemical formula for this ionic compound as \(\ce{MgClCl}\), but the convention is to use a numerical subscript when there is more than one ion of a given type—\(\ce{MgCl2}\). 0366 M. Identify the acids and bases from which the above salts may be obtained. Bischofite is a mineral with formula of MgCl 2 ·6H 2 O. 160 g determined to be 0. Find step-by-step Chemistry solutions and your answer to the following textbook question: calculate the number of moles of cl atoms in 2. A few things to consider when finding the molar mass for MgCl2 • 6H Magnesium chloride. A chlorine atom will gain 1 electron to form a stable 1-ion. Magnesium carbonate or magnesium hydroxide are much safer to use and much cheaper. 7% Chlorine (Cl), 25. The magnesium atom has a valency of 2, while the chloride ion has a valency of 1. 4 g of magnesium chloride (MgCl2)? Here’s the best way to solve it. The given formula units of MgCl A 2 (magnesium chloride) is 3. Formula: MgCl 2 Formula and structure: The magnesium chloride chemical formula is MgCl 2. Magnesium Bromide + Chlorine = Magnesium Chloride + Bromine. 8 percent. So here you can see, that the compound is made by forming 1 M g and 2 Cl atoms. Question: Part C How many formula units make up 19. Magnesium chloride: Magnesium chloride is an ionic compound that is made up of magnesium Mg 2 + and two chloride Cl-ions. Question: 2. MgCl 2 + Sb →no result. It is a hydrate, a magnesium halide and an inorganic chloride. 305. 714 °C. 1 grams Magnesium Chloride is equal to 0. Magnesium chloride. d) Barium chloride We then determine the number of empirical units in a molecule by dividing the molar mass of benzene by the empirical molar mass: Number of empirical units = (78. That means that you first have to convert the oxide into the chloride. + NaOH. c) Magnesium oxide . a) Aluminium sulphate . moles of C atoms Express your answer as an integer. How would your experimental formula of magnesium chloride "MgClx" have been affected if your product was not dried completely before weighing it? Would "x" be too high or two low? Here’s the best way to solve it. 3050 + 35. Other data available: The magnesium chloride ratio in Dead Sea minerals is substantially higher, at 50. This chemical formula says that there are one magnesium ion and two chloride ions in this formula. Calculate the molar mass of magnesium chloride, , to use in the conversion from grams to moles. Empirical Formula of a Compound LAB. 8 g of magnesium chloride (MgCl2)? Express the number of formula units numerically. View Available Hint (s) ΟΙ ΑΣφ ? formula units of MgCl2 Submit. Your solution’s ready to go! Our expert help has broken down your problem into an easy-to-learn solution you can count on. Solubility in water: 54. The molecule is formed by one cation ferrous Mg 2+ and two chloride anions Cl -. Express your answer numerically in moles Cl. It exists as a hydrated crystalline solid where the number of hydrates may range from 2 to 12, though its hexahydrate form is the most common. 61×10²⁴ atoms of Cl . It contains magnesium ( M g 2 +) ion and chloride ions ( C l –). 290 grams mass of crucible and contents after heating = 23. 61×10²⁴ formula Magnesium Cloride is highly soluble in water. To complete magnesium’s octate, however, two chlorine atoms are required to steal two of The Magnesium Chloride Formula electrons. Description. Magnesium Chloride molecular weight. Learning Objectives State the laws of Conservation of Mass and Definite Proportions. 130 grams mass of crucible + hydrate = 25. 305 = 24. It is an inorganic salt, which is highly soluble in water. 84g and completely disregarding the possible chemical reactions, we need to convert each weight into the corresponding number of moles by multiplying the weight with its respective atomic weight. Magnesium chloride, M g C l 2 is an ionic compound. In method #1, the mass of the magnesium will be measured and the volume of only enough hydrochloric acid to completely react with the magnesium will be determined. 20×10 24 formula units of magnesium chloride,MgCl 2. Symbols of elements: Mg Cl. Determine the formula of hydrated sodium carbonate. Ca 2 + ↗ O 2 − \text{Ca}^{2+} \phantom{\nearrow} \text{O}^{2-} Ca 2 + ↗ O 2 −. 1,412 °C. Oct 30, 2015 · Explanation: Magnesium nitride is an ionic compound. Answer :- Firstly we have to find the mass of MgC …. 3 The correct empirical formula will appear below: 4 D Quantity Value Units Method Reference Comment; Δ f H° gas-43. Express your answer numerically in moles. Write the chemical formula for the following compounds . For example, when Mg is heated in the presence of chlorine gas, it ignites to form magnesium chloride (MgCl2). It turns out that MgCl 2 is the formula of the compound which has the most negative enthalpy change of formation - in other words, it is the most stable one relative to the Your solution’s ready to go! Our expert help has broken down your problem into an easy-to-learn solution you can count on. 61×10²⁴ = 7. Physical Properties of Magnesium Chloride: Properties Details Appearance White crystalline solid Boiling Point 1,412 °C (2,574 °F) Chemical Formula MgCl2 Crystal Structure Hexagonal…. Question: How many formula units make up 24. 491 grams What is the complete formula of this Mg + HCl = MgCl2 + H2 is a Single Displacement (Substitution) reaction where one mole of solid Magnesium [Mg] and two moles of aqueous Hydrogen Chloride [HCl] react to form one mole of aqueous Magnesium Chloride [MgCl 2] and one mole of Dihydrogen [H 2] gas. 211. When Magnesium chloride (MgCl 2) and sodium hydroxide (NaOH) solutions are mixed, a white precipitate, magnesium hydroxide (Mg (OH) 2) and sodium chloride (NaCl) are given as products. Our expert help has broken down your problem into an easy-to-learn solution you can count on. 211 g/mol. Molecular weight/molar mass of MgCl 2. These salts are typical ionic halides, being highly soluble in water. 010502988100114 mole. This inorganic compound generally consists of one magnesium ion (Mg+2) and two chloride ions (Cl–). Magnesium Mg 2 + Jun 30, 2023 · The titanium is produced by reacting titanium (IV) chloride, TiCl4 TiCl 4 - NOT the oxide - with either sodium or magnesium. To determine the empirical formula of magnesium chloride by applying mass/mole analysis. That in turn means that you have the expense of the chlorine as well as the energy costs of the conversion. There is an ionic bond existing, due to which the compound is an ionic halide, and highly soluble in water. The overall charge of the compound must be zero. 303 Da. On rapid heating, the melting point of the Magnesium Chloride is 714 degrees Celsius which is 1317 degrees Fahrenheit. 922745 Da. How many formula units make up 18. 801 mol" Dividing Here’s the best way to solve it. Br2Mg + Cl = Cl2Mg + Br is a Single Displacement (Substitution) reaction where one mole of aqueous Magnesium Bromide [Br 2 Mg] and two moles of Chlorine [Cl] gas react to form one mole of aqueous Magnesium Chloride [Cl 2 Mg] and two moles of liquid Bromine [Br] Show Finding the empirical formula of a substance with a percent composition of 74. How many formula units make up 24. Purpose of the lab: Calculate the empirical formula of Magnesium Chloride through an experiment: You will combine a known mass of magnesium (Mg) with hydrochloric acid, HCl (aq), to form a compound containing only the elements Mg and Cl (magnesium chloride). 1. Magnesium chloride is the name for the chemical compounds with the formulas MgCl 2 and its various hydrates MgCl 2 (H 2 O) x. The Chemical formula for Magnesium Chloride is MgCl2. qk eo ch qb vb yc ad mw ac jb