mgbr2 formula mass in amu

Bess Ruff is a Geography PhD student at Florida State University. Oh, two ground ball. For purposes of computing a formula mass, it is helpful to rewrite the formula in the simpler format, Al 2 S 3 O 12. N=14.01 g/mol. This article has been viewed 145,640 times. Molecular weight is measured in Atomic Mass Units, usually expressed as u or amu. Hydrogen = 6.7 % D. 159.8. what are the significant concepts in writing chemical formula? 310.177. We have two of them. What other information do you need in order to determine the molecular formula from the empirical formula of a compound? The percentage composition of a compound is, the percentage by mass of each element in the compound, For any molecule, formula unit, or ion, the sum of the average atomic masses of all the atoms represented in a formula is the. (b) C6H12O6 Equation: 4Zn+10HNO3--->4Zn(NO3)2+N2O+5H2O a. MgBr2 b. HNO2 c. CBr4 d. Ca(NO3)2. To Follow Or Unfollow? This compound is also known as Magnesium Bromide. iPad. , An object that is at rest will begin to move if which of the following is true? In chemistry, the formula weight is a quantity computed by multiplying the atomic weight (in atomic mass units) of each element in a chemical formula by the number of atoms of that element present in the formula, then adding all of these products together. Level up your tech skills and stay ahead of the curve. To complete this calculation, you have to know what substance you are trying to convert. a.) References. A barium salt is found to contain 21.93 g of barium, 5.12 g of sulfur, and 10.24 g of oxygen. Each molecule has the following mass (amu) of carbon. The formula mass for an ionic compound is calculated in the same way as the formula mass for covalent compounds: by summing the average atomic masses of all the atoms in the compounds formula. (a) $\mathrm{NaBr}$(b) $\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}$(c) $\mathrm{P}_{2}, Calculate the formula mass for each compound. (NH4)3PO4, A:Theformula massof a molecule (also known asformulaweight) is the sum of the atomic weights of, Q:calculate the formula mass for each compound How many atoms are present in one formula unit of barium acetate, Ba(C2H3O2)2? in 1 mole of Al2S3, A:Given that, 1 mole of Al2S3. Molecular weight calculation: 24.305 + 79.904*2. carbon, Q:Classify compound as ionic or molecular. HNO2, A:The given Compound isHNO2 Calculate the formula mass and molar mass of NH_3. Enjoy! c. ZEQZ_\text{EQ}ZEQ decreases. ZNPO So if Magnuson says that he waits twenty four point three ground spear mon. A: Molecule is made up of atoms. A:Formula mass of the compound is equal to the sum of the masses of the C and Br. Determine the formula mass/ = 1.00794 amu. What is the correct Stock name for SnBr4? formula mass = amu Submit Request Answer Part D Ca(NO3)2 Express your answer in atomic mass units to two decimal places. Molar mass of MgBr2 is 184.1130 g/mol. anor277. A = Mass Number or Atomic Weight; Calculation of relative atomic mass or weight of an element is made easier here. In chemistry, the formula weight is a quantity computed by multiplying the atomic weight (in atomic mass units) of each element in a chemical formula by the number of atoms of that element present in the formula, then adding all of these products together. The molecular mass of each compound is as follows: formula mass:sum of the average masses for all atoms represented in a chemical formula; for covalent compounds, this is also the molecular mass, molar mass:mass in grams of 1 mole of a substance, [latex]\begin{array}{ll}4\text{C}\times 12.011\hfill & =48.044\text{amu}\hfill \\ 6\text{H}\times 1.0079\hfill & =\underline{6.0474\text{amu}}\hfill \\ \hfill & =54.091\text{amu}\hfill \end{array}[/latex], [latex]\begin{array}{ll}\hfill 2\text{H}\times 1.0079& =2.01558\text{amu}\hfill \\ 2\text{Si}\times 28.0855\hfill & =56.1710\text{amu}\hfill \\ 4\text{Cl}\times 35.4527\hfill & =\underline{141.8108\text{amu}}\hfill \\ \hfill & =199.9976\text{amu}\hfill \end{array}[/latex], [latex]\begin{array}{ll}\hfill 3\text{H}\times 1.0079& =3.0237\text{amu}\hfill \\ 1\text{P}\times 30.973762\hfill & =30.973762\text{amu}\hfill \\ \hfill 4\text{O}\times 15.9994& =\underline{63.9976\text{amu}}\hfill \\ \hfill & =97.9950\text{amu}\hfill \end{array}[/latex], Calculate formula masses for covalent and ionic compounds. Determine which reactant gives the least amount of product -- this is the limiting reactant, Limiting Reactant: How many grams of silver bromide (AgBr) can be formed when solutions containing 55.0 g of MgBr2 and 95.0 g of AgNO3 are mixed together? MgF2 What is the oxidation number of phosphorus in H3PO4? The atomic mass of bromine is 79.9. For example, the formula mass of sodium chloride, NaCl, 58.44, is the sum of the atomic mass of sodium, 22.99, and the atomic mass of chlorine, 35.45. Then, multiply the atomic mass of an element by the number of atoms of the element in the molecule. Q:What is the empirical formula of a compound that is made up of 81.68% carbon and 18.32% hydrogen. Compound name is magnesium bromide. What is the empirical formula for lactic acid, which has a molecular formula of C3H6O3? This is going to be one with no one ground. View this solution and millions of others when you join today! By using our site, you agree to our. A 4.582 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis and 7.631 grams of CO2 and 2.500 grams of H2O are produced.In a separate experiment, the molar mass is found to be 132.1 g/mol. The formula mass of a substance is the sum of the average atomic masses of each atom represented in the chemical formula and is expressed in atomic mass units. Track your food intake, exercise, sleep and meditation for free. Is the conformer generation of magnesium bromide disallowed? And this is the molecular must from the last of his company. Transcribed image text: Part A H.CO; Express your answer in atomic mass units to two decimal places, V PO ? In chemical formula you may use: Any chemical element. 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. This is total one hundred eighty four point one ground your mall. Then, bro Ming waits Ah, seventy nine point nine. MgBr2 b. HNO2 c. CBr4 d. Ca(NO3)2 Equation: 2Al+6HCl+---->2AlCl3+3H2 It has the highest electronega Oxygen A mole corresponds to the mass of a substance that contains 6.023 x 10 23 particles of the substance.The mole is the SI unit for the amount of a substance. The formula weight is simply the weight in atomic mass units of all the atoms in a given formula. So we have a grand total of forty seven. The molar mass of KOH is 56.o. FT, Q:Classify each chemical compound Use a copy of the Periodic Table of Elements.The Periodic Table lists the atomic mass of each element below the chemical symbol. Wait seventy nine for nine. Its symbol is mol. 44.01 g/mol. What is the correct Stock name for Cr(C2H3O2)3? Q:Determine the number of molecules or formula So we have two nitrogen sze times fourteen draft from war and then oxygen. 237.95 g/mol The formula mass of a covalent compound is also called the molecular mass. The average mass of a chloroform molecule, CHCl3, is 119.37 amu, which is the sum of the average atomic masses of each of its constituent atoms. Equation: 2AgNO3+H2S--->Ag2S+2HNO3 These Tips Will Help You In Getting Followers On Instagram, Finding The Right Security System 4 Top Home Security Systems. Finding molar mass starts with units of grams per mole (g/mol). This is how to calculate molar mass (average molecular weight), which is based on isotropically weighted averages. The number of atoms of each element involved in the reaction . MgBr2 b. HNO2 c. CBr4 d. Ca(NO3)2, Calculator the formula mass of each of these compounds, The ionic compound CaCO3 has a formula mass of Soon we have nineteen, Jen, and we have oxy. The. C. 18.02 amu For the formula mass of calcium fluoride (CaF 2), we must multiply the mass of the fluorine atom by 2 to account for the two fluorine atoms in the chemical formula: Ca: 1 x 40.08 = 40.08 amu. So we have forty point one grams. (a) CS2 (b) C6H12O6 (c) Fe (NO3)3 (d) C7H16. Please enable JavaScript in order to use this website. a. MgBr2 b. HNO2 c. CBr4 d. Cr(NO3)3, Place the following in order from smallest to largest by atomic radius: Rb, Na, K, Cs, P, He. Even though a sodium cation has a slightly smaller mass than a . Using the chemical formula of the compound and the periodic table of elements, we can add up the atomic weights and calculate molecular weight of the substance. Even when calculating the mass of an isolated ion, the missing or additional electrons can generally be ignored, since their contribution to the overall mass is negligible, reflected only in the non-significant digits that will be lost when the computed mass is properly rounded. To find:The formula mass of HNO2, Q:- 1 Q:Without doing any calculations, arrange the elements in H2SO4 in order of decreasing mass percent. Figure 1. 2. 300. Explanation: The atomic mass of Mg is 24.3 amu. By using this service, some information may be shared with YouTube. And the best thing is to have handy the, um, periodic table for you to be able to obtain. mol' and the following composition: If you continue to use this site we will assume that you are happy with it. So two times twenty four point three is twenty four point three. A:The elements in H2SO4 have to be arranged in the order of decreasing mass percent composition. The platinum(II) ion and the platinum(IV) ion, The smallest whole-number ratio of atoms of each element, combined in the simplest unit of a chemical compound is known as a(n). Research source We have one nitrogen and nitrogen. WebQC is a web application with a mission to provide best-in-class chemistry tools and information to chemists and students. = 53.9630 amu. Potassium nitrite Unbalanced forces act on the object. Expert Answer. 48 kg of molybdenum(VI) oxide,, Q:Is this compound an ionic compound or a molecular compound Magnesium bromide can be synthesized by reacting hydrobromic acid with magnesium oxide and crystallizing the product. What are the major takeaways? For example, Daltons atomic theory was an attempt to explain the results of measurements that allowed him to calculate the relative masses of elements combined in various compounds. First, you want to have a periodic table available so you can determine the atomic weight of C, H, and O: C has an atomic weight of 12.01 g/mol; H has an atomic weight of 1.008 g/mol; O has an atomic weight of 16.00 g/mol ; From the chemical formula, we have 6 . The formula for this compound indicates it contains Al3+ and SO42- ions combined in a 2:3 ratio. x-N, A:From the figure = 1.086 mol MgBr2(2 mol AgBr/1 mol MgBr2)= 2.172 mol AgBr mass %, A:Please note- As per our company guidelines we are supposed to answer only one question. Mg2+ Following the approach outlined above, the formula mass for this compound is calculated as follows: 2 Al mass = 2 x 26.9815 amu. We use cookies to ensure that we give you the best experience on our website. C. 1 mole of any molecule contain, Q:Write the formula of each compound, and determine its molecular (formula) mass: (a) ammonium, A:Chemical formulae provide a way to represent any chemical substance using the symbol of the elements, Q:Calculate the formula mass for each compound.a. c.) cbr4 = 172 g/mol. Note that the average masses of neutral sodium and chlorine atoms were used in this computation, rather than the masses for sodium cations and chlorine anions. Hence, molar mass of MgBr2 is 24 +2 x 80=184g. It is often used as a mild sedative and as an anticonvulsant for treatment of nervous disorders. The surface on which it rests is frictionless. of compound 3P8N NO2, A:Given, chemical formula of some compound and we are asked to calculate the formula mass of these, Q:Complete the table of compounds that contain only Oxygen = 53.3% 4 of the opposite faces of, A:Pb is the symbol for Lead and I is the symbol for Iodine. Solution for Calculate the formula mass for each compound.a. Stokes law can be used to determine the viscosity of a fluid by dropping a spherical object in it and measuring the terminal velocity of the object in that fluid. Part A MgBr2 Express your answer in atomic mass units to two decimal places. What is the formula for the compound dinitrogen tetroxide? [1] ZnCo3. Equation: 3H2+N2 ---> 2NH3 During such an experiment a 3-mm-diameter glass ball (ho=2500kg/m3)( 1 H masses. Copyright 2023 Bosa Travelers Blog. What is the correct prefix-based name for selenium (II) fluoride? Median response time is 34 minutes for paid subscribers and may be longer for promotional offers. Ibuprofen, C13H18O2, is a covalent compound and the active ingredient in several popular nonprescription pain medications, such as Advil and Motrin. (a) HClO Figure 3. . Note that the relative atomic mass you find in the periodic table is scaled: it accounts for all of the isotopes of the element in the proportions that they naturally occur. Sep 12, 2016. Answer to: For each formula, write the name for each compound (don't forget roman numerals, if necessary) in the corresponding cell under the. 133.34 amuB. Andi? Which molecular compound contains 7 atoms per molecule ? In this video we'll write the correct formula for MgBr2 (Magnesium bromide).To write the formula for MgBr2 we'll use the Periodic Table and follow some simpl. MgBr2 b. HNO2c. Calculate the formula mass for each compound. A:Given: with hydrochloric acid? Wiki User. Therefore, the formula weight of MgBr2 equals 24.3 amu + (2 79.9 amu), or 184.1 amu. 9 mol H2(2.016g/1 mol H2)=18 g H2, How many moles of silver nitrate (AgNO3) are required to produce 100.0 g of silver sulfide (Ag2S)? Molar O has a molecular mass of 16. a. NO2 b. C4H10 c. C6H12O6 60. This is not the same as molecular mass, which is the mass of a single molecule of well-defined isotopes. b. SrBr2 N2O5 The average mass of one H 2 O . ZnCO3 molecular weight. She received her MA in Environmental Science and Management from the University of California, Santa Barbara in 2016. 50 amu What is the compound's molecular formula? ., A:Converting % mass of each element to grams (if total mass is 100 g), we have, Wait. Ex. Carbon This can be done by plotting the distance traveled against time and observing when the curve becomes linear. -- the limiting reactant will be used up first (the reaction will stop The number of moles of each substance consumed or produced in the reaction, How many moles of ammonia are produced from 8.00 mol of hydrogen reacting with nitrogen? We have to find which one of is ionic and which one is molecular, Q:Compound X has a molar mass of 134.12 gmol Consider chloroform (CHCl3), a covalent compound once used as a surgical anesthetic and now primarily used in the production of the anti-stick polymer, Teflon. molar mass of mgbr2 is 184.1130 g/mol compound name is magnesium bromide convert between mgbr2 weight and moles to complete this calculation, you have to know what substance you are trying to convert. Scariest Animated Movies to Watch With Your Kids. Q:Write the formula for boron trifluoride, Q:The correct formula for triphosphorus octanitride is Gravity on the object can be reduced. and the following composition: The atomic weights used on this site come from NIST, the National Institute of Standards and Technology. Mass The atomic weights used on this site come from NIST, the National Institute of Standards and Technology. One mole of potassium atoms has a mass of. .403 mol Ag2S(2mol AgNO3/1 mol Ag2S)= .806 mol AgNO3, How many grams of nitric acid are required to produce 8.75 g of dinitrogen monoxide (N2O)? There are 7 references cited in this article, which can be found at the bottom of the page. Analysis of a sample of a sulfur acid shows it to contain 0.17 g of hydrogen, 2.82 g of sulfur, and 5.67 g of oxygen. The formula mass of a substance is the sum of the atomic masses of all the atoms in the formula. We use the most common isotopes. (d) HClO4, A:The molecular formulae of the given acids are shown below: a. NO2 b. C4H10 c. C6H12O6 60. = 106.3581. If the formula used in calculating molar mass is the molecular formula, the formula weight computed is the molecular weight. Determine the empirical formula for the compound represented by molecular formula. The oxidation state of Lead in this given, Q:Name each acid. Answer. $=47.018$ amu c.) Formula mass $=1(12.01$ amu $)+4(79.90$ amu $)$ $=331.61$ amu d.) Formula mass $=40.08$ amu $+2(14.01$ amu $)+6(16.00$ amu $)$ $=164.1$ amu. O=16.00 g/mol. Glucose (CoH1206) Compound Formula How many bromide ions are there in 1.5 moles of MgBr2? Answer: 184.113 g/mol. MgBr2 + 2 AgNO3 ----> Mg(NO3)3 + 2 AgBr When the frequency of the applied voltage decreases in a parallel RLRLRL circuit, What is the formula for copper (I) oxide? (a) HClO As a small thank you, wed like to offer you a $30 gift card (valid at GoNift.com). What kind of drug is magnesium bromide ( MgBr2 )? 100.0g Ag2S(1 mol Ag2S/247.87 g Ag2S)= .403 mol Ag2S 3., A:Formula mass :- Molecules, Compounds, And Chemical Reactions. These relative weights computed from the chemical equation are sometimes called equation weights. 1. element mass % 3 Cl masses = 3 x 35.4527 amu. NH3, A:The compounds which are made up of ions are known as ionic compounds. Hydrogen To get the formula mass of a compound we have to add all the atomic masses . Were committed to providing the world with free how-to resources, and even $1 helps us in our mission. The percentage by weight of any atom or group of atoms in a compound can be computed by dividing the total weight of the atom (or group of atoms) in the formula by the formula weight and multiplying by 100. O-M (a) barium bromide(b) dinitrogen trioxide(c) copper(I) sulf, Calculate the formula mass for each compound.\begin{equation} \quad \text { a. P3N8 Thanks to all authors for creating a page that has been read 145,640 times. 100% (5 ratings) A. Expert Answer. -1 View the full answer. Determine the formula mass for each of Br2: SnBr2. = 96.198 amu. C has a molecular mass of 12.01. They have car. 1. element What is the molecular mass of phosphorus? d. NO2 b. C4H10 c. C6H12O6 d. Cr(NO3)3, Q:Complete the following for the compound aluminum nitrate 50 g/mole Q:what are the significant concepts in writing chemical formula? SbCl3, Find the number of molecules of 65.5 g of the following: What is the empirical formula for this compound? We use cookies to make wikiHow great. element mass % . Putting in a molecular formula of any type such as K2Cr2O7, CH3CH2COOH, KFe[Fe(CN)6]3, or Na2B4O7.10H20 will result in the molar mass and mass analyses being calculated when the button is pressed. atom, A:Given,Aluminium nitrate.The formula of the given compound is Al(NO3)3, A:When a metal and a non-metal atom reacts, ionic compounds are formed. Learning outcomes By the end of this topic, you will be able to: 2.1.1 define the unified atomic mass unit as one twelfth of the mass of a carbon-12 atom 2.1.2 define relative atomic mass Ar, relative isotopic mass, relative molecular mass, Mr, and relative formula mass in terms of the unified atomic mass unit 2.2.1 define and use the term mole . a. the phase angle, I\theta_\text{I}I, becomes less negative. Group of answer choices A:mass of Hydrogen 1g/mol Simply add the molar masses of the individual elements. This compound is also known as Magnesium Bromide Hexahydrate. b. ZEQZ_\text{EQ}ZEQ increases. 1. Fe(C2H3O2)3 Fe 23.97% C 30.90% H 3.90% O 41.20%. We have three oxygen's times two. A:Chemical formula is a representation of a compound of molecule . = 119.377 amu = the molecular mass of CHCl 3. What information about a chemical reaction can you get from a balanced chemical equation? . Input the molecular formula and the weight is calculated. A genuine. What is the molecular mass (amu) for this compound? Any chemical element. Re: what is the formula mass of mgbr2 * 6h20? Formula mass of a compound is the sum of all the atomic weights of atoms in the, Q:rite the empirical formula of at least four binary ionic compounds that could be, A:The cation Mg2+ forms a binary ionic compound with two Cl- ions having empirical formula MgCl2. Calculate the formula mass and molar mass of HClO_3. element Convert grams MgBr2 to moles or moles MgBr2 to grams. 65.38 + 12.0107 + 15.9994*3, Note that all formulas are case-sensitive. Magnesium bromide 7789-48-2 magnesiumbromide Magnesium bromide, 98%, pure, anhydrous Dibromomagnesium More, CID 5462224 (Magnesium) CID 260 (Hydrogen bromide). (c) Fe(NO3)3 common chemical compounds. Molecular weight calculation: 24.305 + 79.904*2. MgBr2 + F2 = MgF2 + Br2 MgF2 + Na2CO3 = MgCO3 + 2 NaF 2 LiF + Mg(OH)2 = MgF2 + 2 LiOH :: Chemistry Applications:: Chemical Elements, Periodic Table Compound Name Formula Search . The gram atomic mass is the number of grams of an element that is numerically equal to the atomic mass in amu. Calculate the molecular or formula mass for Ca(NO3)2. a) 116 amu b) 102 amu c) 82 amu d) 164 amu; Calculate the molar mass of the compound boron trichloride. The few exceptions to this guideline are very light ions derived from elements with precisely known atomic masses. F: 2 x 19.00 = +38.00 amu. Does It Matter Where You Buy Your CBD Oil? An atom consist of nucleus that contain protons and neutrons. 7.52 % What is the empirical formula for a compound that contains 83.01% K and 16.98% O by mass? 2. 1. at the 8 corners of cube. manganese and oxygen. The mole concept can b. Imagine we have one match in here, but we have a fully atomic and I am on two of them. Its formula mass is 58.44 amu. MgBr2 b. HNO2 c. CBr4 d. Ca(NO3)2. when the limiting reactant is depleted) Figure 3.4 Table salt, NaCl, contains an array of sodium and chloride ions combined in a 1:1 ratio. 238.0 amu We have one costume waits forty points. Finding molar mass starts with units of grams per mole (g/mol). http://www.chemteam.info/Mole/MolecWt.html, https://www.cmu.edu/gelfand/lgc-educational-media/polymers/what-is-polymer/molecular-weight-calculation.html, https://www.khanacademy.org/science/biology/chemistry--of-life/elements-and-atoms/a/atomic-number-atomic-mass-and-isotopes-article, https://chem.libretexts.org/Courses/University_of_British_Columbia/CHEM_100%3A_Foundations_of_Chemistry/06%3A_Chemical_Composition/6.9%3A_Calculating_Molecular_Formulas_for_Compounds, http://chemcollective.org/activities/tutorials/stoich/calculating_molecular_weight, https://www.khanacademy.org/science/chemistry/atomic-structure-and-properties/introduction-to-compounds/v/molecular-mass-and-molecular-weight, calculer la masse molculaire (poids molculaire) dune molcule. Last Updated: December 6, 2022 c. Magnesium Fluoride MgF2 Molar Mass, Molecular Weight. AgNO3 is the limiting reactant. Kindly. (a) NaOH This approach is perfectly acceptable when computing the formula mass of an ionic compound. D. 6.0 mol Al (3 mol H2/2 mol Al)= 9 mol H2 3 S masses = 3 x 32.066 amu. t is sufficient. - 1 Because a substances molar mass has the same numerical value as its formula weight, the molar mass of MgBr2 equals 184.1 g/mol. The atomic mass of an element is roughly equal to the summed mass of the protons and neutrons that it contains. mass (grams) x 1/molar mass (g/mol) = amount (moles). Used to find the relative mass of atoms expressed in atomic mass units (amu) One amu is equal to exactly 1/12 the mass of a carbon-12 atom 1 amu = 1.9927 x 10-23 g / 12 = 1.6606 x 10-24 g 1.8 x 1024 ions. So we have one magnesium. X Q:Calculate the formula mass for each compound. Drink These Herbal Tea Regularly For Healthy Skin! Cu2+ Advertisement. element Molar mass of MgBr2 = 184.113 g/mol. Figure 1. To complete this calculation, you have to know what substance you are trying to convert. So this is the formula weight off. A:The formula of a compound in which the various elements are in the simplest whole number molar ratio, Q:What is the formula mass for: ? Therefore, the formula weight of MgBr2 equals 24.3 amu + (2 79.9 amu), or 184.1 amu. Using the chemical formula of the compound and the periodic table of elements, we can add up the atomic weights and calculate molecular weight of the substance. For ionic compounds with polyatomic ions, the sum must include the . The percentage by weight of any atom or group of atoms in a compound can be computed by dividing the total weight of the atom (or group of atoms) in the formula by the formula weight and multiplying by 100. B. Bruce Edward Bursten, Catherine J. Murphy, H. Eugene Lemay, Matthew E. Stoltzfus, Patrick Woodward, Theodore E. Brown. The Formula Mass of any molecule, formula unit, or ion is the sum of the average atomic masses of all the atoms represented in its formula. 1 mole MgBr2 = 184.113g MgBr2 7mol MgBr2 x 184.113g MgBr2/mol MgBr2 = 1288.791g MgBr2 d. Sr(NO3)2, A:Formula mass or formula weight: For example, use the formula CH4 for methane, which comprises 1 atom of carbon and 4 atoms of hydrogen. Find the relative atomic mass of each element in the molecule. 2Br(aq)Br2(l)+2e. If the formula used in calculating molar mass is the molecular formula, the formula weight computed is the molecular weight. What is the total mass of hydrogen in each of the molecules? (c) C1,H10FE, A:Introduction- 3. (c) HClO3 Likewise, the molecular mass of an aspirin molecule, C9H8O4, is the sum of the atomic masses of nine carbon atoms, eight hydrogen atoms, and four oxygen atoms, which amounts to 180.15 amu (Figure 2). The molar mass of FeCl3 is 162.2 g/mol. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/d\/d4\/Calculate-Molecular-Weight-Step-1.jpg\/v4-460px-Calculate-Molecular-Weight-Step-1.jpg","bigUrl":"\/images\/thumb\/d\/d4\/Calculate-Molecular-Weight-Step-1.jpg\/aid4627737-v4-728px-Calculate-Molecular-Weight-Step-1.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"