So carbon has a molar mass of 12.01 grams per mole and now we can think about hydrogen in the same way. In order to determine the molecular mass of a compound X, you have to add the atomic masses of all the elements in the composition including their multiplications as per the subscripts in the formula. Molecular weight calculation: 50.9415 + 32.065*2 We have just played around with the structural arrangements of ethanol formula although the ratio of atoms remains the same. (1 u is equal to 1/12 the mass of one atom of carbon-12) The molecular mass and relative molecular mass are distinct from but related to the molar mass. Example: The relative atomic mass of magnesium is 24. Thus, by knowing the molar mass, we can determine the number of moles contained in a given mass of a sample. Sir, The unit in which molecular mass is measured is amu. Take into account the subscripts. 3.7 million tough questions answered. The molar mass is the mass of one mole of substance, whether the substance is an element or a compound. Thus the molar mass would be 15.9994 g/mol. Your email address will not be published. ››VS2 molecular weight. Get the detailed answer: What is the difference between molecular mass and molar mass? please reply me whether I am correct or not. India’s largest k-12 learning app with top-notch teachers from across the nation with excellent teaching skills. Determine the molecular mass of H2O and CH3CH2OH. The amount of molecules or atoms or compounds present in one mole of substance is given by this. In chemistry, the molar mass of a chemical compound is defined as the mass of a sample of that compound divided by the amount of substance in that sample, measured in moles. Molar mass is expressed in grams per mole or kilograms per mole whereas molecular mass is expressed in atomic mass units. The same procedure is followed in calculating the molar mass. Your email address will not be published. An example would be determining the number of molecules in a cylinder. To make you understand how molar mass and Molecular mass is different from each other, here are the some of the major differences molar mass and molecular mass: Molecular mass of Ca(OH)2 = 74 atomic mass units. The molar mass of sodium chloride is known; it is 58.44 g mol −1. These atomic masses are taken directly from the periodic table of elements. Firstly, molecule refers to the composition of similar or different atoms arranged in ratios. The molecular mass gives the mass of a molecule when the molecular formula of that molecule is considered. Switch to. molar mass mass which is of one mole of a substance (chemical element or chemical compound) Molecular mass differs from more common measurements of the mass of chemicals, such as molar mass, by taking into account the isotopic composition of a molecule rather than the average isotopic distribution of many molecules. And then last but not least, we have oxygen here. 1 mol consists of exactly 6.02214076 * 10²³ particles. Molar mass: It is defined as the mass of substance for a given amount. Oxygen, we can see from our periodic table of elements, it has a molar mass of 16.00 grams per mole. The molar mass is defined as the mass of a given substance divided by the amount of a substance and is expressed in g/mol. The molar mass of an element (in terms of atom) is equal to its relative atomic mass (Ar) in grams. Molecular mass (molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). Molecular mass is expressed in atomic mass units. The atomic mass of Hydrogen is, from the periodic table, 1.0079 amu and that of oxygen is 15.9994. We will illustrate with an example below. Expression of molar mass is grams per mole. Molar mass is determined by dividing the total mass of the substance which is the average masses of each atom by the amount in moles. Molar mass SI unit is g/mol In chemistry the substance is usually measured using molecular mass and molar mass. Chemists frequently measure substances by using molar mass and molecular mass. If this sounds too technical, we will illustrate with an example below: In the first example, we determined the molecular mass of ethanol (C2H5OH). The number of things in a mole is large, very large (6.0221415 x 10 23).We are all familiar with common copy-machine paper that comes in 500 sheet reams. Molecular mass differs because of the isotopes. Molar mass is the same as molecular weight. CBSE Previous Year Question Papers Class 10, CBSE Previous Year Question Papers Class 12, NCERT Solutions Class 11 Business Studies, NCERT Solutions Class 12 Business Studies, NCERT Solutions Class 12 Accountancy Part 1, NCERT Solutions Class 12 Accountancy Part 2, NCERT Solutions For Class 6 Social Science, NCERT Solutions for Class 7 Social Science, NCERT Solutions for Class 8 Social Science, NCERT Solutions For Class 9 Social Science, NCERT Solutions For Class 9 Maths Chapter 1, NCERT Solutions For Class 9 Maths Chapter 2, NCERT Solutions For Class 9 Maths Chapter 3, NCERT Solutions For Class 9 Maths Chapter 4, NCERT Solutions For Class 9 Maths Chapter 5, NCERT Solutions For Class 9 Maths Chapter 6, NCERT Solutions For Class 9 Maths Chapter 7, NCERT Solutions For Class 9 Maths Chapter 8, NCERT Solutions For Class 9 Maths Chapter 9, NCERT Solutions For Class 9 Maths Chapter 10, NCERT Solutions For Class 9 Maths Chapter 11, NCERT Solutions For Class 9 Maths Chapter 12, NCERT Solutions For Class 9 Maths Chapter 13, NCERT Solutions For Class 9 Maths Chapter 14, NCERT Solutions For Class 9 Maths Chapter 15, NCERT Solutions for Class 9 Science Chapter 1, NCERT Solutions for Class 9 Science Chapter 2, NCERT Solutions for Class 9 Science Chapter 3, NCERT Solutions for Class 9 Science Chapter 4, NCERT Solutions for Class 9 Science Chapter 5, NCERT Solutions for Class 9 Science Chapter 6, NCERT Solutions for Class 9 Science Chapter 7, NCERT Solutions for Class 9 Science Chapter 8, NCERT Solutions for Class 9 Science Chapter 9, NCERT Solutions for Class 9 Science Chapter 10, NCERT Solutions for Class 9 Science Chapter 12, NCERT Solutions for Class 9 Science Chapter 11, NCERT Solutions for Class 9 Science Chapter 13, NCERT Solutions for Class 9 Science Chapter 14, NCERT Solutions for Class 9 Science Chapter 15, NCERT Solutions for Class 10 Social Science, NCERT Solutions for Class 10 Maths Chapter 1, NCERT Solutions for Class 10 Maths Chapter 2, NCERT Solutions for Class 10 Maths Chapter 3, NCERT Solutions for Class 10 Maths Chapter 4, NCERT Solutions for Class 10 Maths Chapter 5, NCERT Solutions for Class 10 Maths Chapter 6, NCERT Solutions for Class 10 Maths Chapter 7, NCERT Solutions for Class 10 Maths Chapter 8, NCERT Solutions for Class 10 Maths Chapter 9, NCERT Solutions for Class 10 Maths Chapter 10, NCERT Solutions for Class 10 Maths Chapter 11, NCERT Solutions for Class 10 Maths Chapter 12, NCERT Solutions for Class 10 Maths Chapter 13, NCERT Solutions for Class 10 Maths Chapter 14, NCERT Solutions for Class 10 Maths Chapter 15, NCERT Solutions for Class 10 Science Chapter 1, NCERT Solutions for Class 10 Science Chapter 2, NCERT Solutions for Class 10 Science Chapter 3, NCERT Solutions for Class 10 Science Chapter 4, NCERT Solutions for Class 10 Science Chapter 5, NCERT Solutions for Class 10 Science Chapter 6, NCERT Solutions for Class 10 Science Chapter 7, NCERT Solutions for Class 10 Science Chapter 8, NCERT Solutions for Class 10 Science Chapter 9, NCERT Solutions for Class 10 Science Chapter 10, NCERT Solutions for Class 10 Science Chapter 11, NCERT Solutions for Class 10 Science Chapter 12, NCERT Solutions for Class 10 Science Chapter 13, NCERT Solutions for Class 10 Science Chapter 14, NCERT Solutions for Class 10 Science Chapter 15, NCERT Solutions for Class 10 Science Chapter 16, Important Questions For Class 11 Chemistry, Important Questions For Class 12 Chemistry, CBSE Previous Year Question Papers Class 10 Science, CBSE Previous Year Question Papers Class 12 Physics, CBSE Previous Year Question Papers Class 12 Chemistry, CBSE Previous Year Question Papers Class 12 Biology, ICSE Previous Year Question Papers Class 10 Physics, ICSE Previous Year Question Papers Class 10 Chemistry, ICSE Previous Year Question Papers Class 10 Maths, ISC Previous Year Question Papers Class 12 Physics, ISC Previous Year Question Papers Class 12 Chemistry, ISC Previous Year Question Papers Class 12 Biology, It determines the mass of a single molecule, SI unit is g/mol to use in higher calculations, It is defined as the mass of Avogadro number of atoms/molecules or compounds, Measurement given to compounds, atoms or molecules, Example: Mass of 1 mole of oxygen is 15.9994 grams. (1 u is equal to 1/12 the mass of one atom of carbon-12) The formula mass (formula weight) of glucose is 30 (either no units or else grams per mole), while the molecular mass (molecular weight) is … Molar mass and molecular mass are important concepts in chemistry 2. Homework Help. Personalized courses, with or without credits. Molecular mass refers to the mass of the molecules whereas Molar mass refers to the mass of a mole of a substance. Hydrogen has a molar mass of 1.008 grams per mole, 008 grams per mole. Convert grams VS2 to moles or moles VS2 to grams. These were some important difference between molecular mass and molar mass. We calculate molar mass by dividing the mass of the substance by the amount and calculate the molecular mass by taking average mass of the units of the substance. Both the molar mass and molecular weight are expressed in units of grams per mole. Although the definition and units are different for molar mass and molecular weight, the value is the same. They have the same values but different SI units. Avogadro’s number, 6.022 x 1023 is often used to relate the number of atoms, molecules and other units that a molar mass is equal to. Molecular mass differs because of the isotopes. It sums the average masses of individual atoms in a molecule of that particular substance. Molar mass is basically unitless. Examples of molecular weight computations: C[14]O[16]2, S[34]O[16]2. Molar mass 44.01 g/mol Molecular weight calculation: 12.0107 + 15.9994*2 This is in more easy language However, the main difference is that molecular weight only describes the weight of the molecules over the elements. Now only I understood that both have the same magnitude but differ in their sign and defn only. That said, the molecular mass of CH3CH2OH is 2(12.011) + 6(1.0079) + 1(15.9994) = 46.069 amu. Naturally, carbon contains carbon-12, carbon-13 and carbon-14. For example, let us compute for the molar mass/molecular weight of the compound water. Ethanol contains 6.022 x 1023molecules, and the molar mass is equal to the mass of ethanol that contains these molecules. Booster Classes. Not to be confused with Molecular mass or Mass number. It can also be expressed as kilogram per mole. Find notes, question papers for other subjects like Mathematics, Physics, Biology and various competitive exams as well. For your exercise, calculate the molecular formula of ethane (C2H4) and CO2. Amu stands for atomic mass units. Basically, molecular mass is … Difference Between Unilateral Contract and Bilateral Contract, Difference Between a Passport Book and Passport Card, Molar mass and molecular mass are important concepts in chemistry. Notice the same value but different units. Molar mass SI unit is g/mol. Required fields are marked *, Notify me of followup comments via e-mail, March 11, 2018 • 2 comments. Taking the atomic masses from the period table, we find that the molar mass is 2(12.011g) + 6(1.0079g) + 15.9994g which is equal to 46.069 g/mo. We found the molecular mass of ethanol to be 46.069 atomic mass units in our previous example. For a carbon dioxide compound, for example, the molar mass is defined as the mass of 1 mole of molecules in that compound. Let me make it more clear with an example of sodium chloride. Home. Formula mass and molecular mass are two terms used to find the mass of a molecule.The formula mass gives the mass of a molecule when the empirical formula of that molecule is considered. The unit in which molecular mass is measured is amu. We calculate molar mass by dividing the mass of the substance by the amount and calculate the molecular mass by taking average mass of the units of the substance 4. Now regarding the molar mass concept, it is defined as the mass in kilograms or grams of a mole of a substance. Definitions of molecular mass, molecular weight, molar mass and molar weight. Molecular mass of a compound is defined as the mass of one molecule. First, it is a mass, so it has units of mass, commonly the gram. All you need to do is calculate the molecular weight and stick the unit "g/mol" (grams per mole) after the number (instead of amu) and that is the molar mass for the substance in question. You may need the periodic table to calculate molar mass. The number value is the same, only the units differ. Learning is no more boring with BYJU’S. A mole of substance is equal to Avogadro's number (6.023×10 23) of that substance. The molar mass of an ionic compound is equal to its relative formula mass (Mr) in grams. There are 2 Carbon atoms, 6 Hydrogen atoms and 1 Oxygen atom. The molar mass has units of g/mol or kg/mol. 3. For example, H2O indicates that there are two hydrogen atoms and one oxygen atom. Molar mass is not to be mistaken with molecular weight - the mass of a single molecule of a substance, given in daltons (e.g., single HO particle is 18 u). Your dashboard and recommendations. Molecular mass of CO is 27.9994 a.m.u and the Molar mass of CO is 27.9994 g/mol. Molecular mass is in atomic mass units (amu), and molar mass is in grams per mole. The molecular mass is determined by calculating the mass of the substance as related to the 1/12th of carbon-12 isotope. Molecular weight is the mass of one molecule of a substance while the molar mass is the mass of one mole of a substance. Calculate the molar mass of Calcium Phosphate (Ca3(PO4)2). Study … It is defined as the mass of substance for a given amount. You have to assess the compositions of the given molecular formulas and derive their atomic masses from the periodic table. Chemistry studies the interaction of atoms and molecules on an atomic scale. 1. 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. Molar mass is the mass of 1 mole of a substance, given in g/mol. Required fields are marked *, Difference Between Molar Mass And Molecular Mass. Molecular mass (molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). Thank you so much for the detailed explanation. The key difference between molar mass and molecular mass is that the molar mass gives the average mass of the molecule whereas the molecular mass gives the mass of a single molecule. NB: The molar mass of any chemical substance refers to its atomic mass or molecular mass in grams per mole. Molar mass is basically unitless. The answer should be 310.177 g/mol. Usually, the units for molar mass are gram/mol. To know differences between other topics in chemistry you can register to BYJU’S or download our app for simple and interesting content. And to determine the molecular mass of ethanol, the other formula given in the question, we follow the same steps. What is the relationship between molar mass and formula mass? Amu stands for atomic mass units. ››More information on molar mass and molecular weight. The molar mass of a molecular substance is equal to its relative molecular mass (Mr) in grams. 4.2: Molar Mass Last updated; Save as PDF Page ID 79550; Contributor; As we described in Section 4.1, in chemistry, the term mole can be used to describe a particular number. For instance, a molar mass of H2O would be equal to the mass in grams per mole of 6.022 x 1023 water molecules. With regard to carbon, the molar mass of a naturally occurring carbon with be different from the one derived from the period table which belongs to carbon-12 isotope. If you know the molecular weight, you know the molar mass. Your email address will not be published. Definitions of molecular mass, molecular weight, molar mass and molar weight. They are very important concepts in chemistry. The main difference between molar mass and molecular weight is that molar mass gives the mass of a mole of a particular substance whereas molecular weight is the mass of a molecule of a particular substance. Don’t be confused by a different formula as the aforementioned. They have the same values but different SI units. But a mole of carbon still contains 6.022 x 1023 but with different ratios of these isotopes. In a nutshell, a molecular mass refers to the total mass of a substance. Examples of molecular weight computations: C[14]O[16]2, S[34]O[16]2. Your email address will not be published. The molecules can form chemical compounds subject to the physical and chemical properties of each molecule. The amount of molecules or atoms or compounds present in one mole of substance is given by this. The key difference between formula mass and molar mass is that, the formula mass of a molecule or a compound is the sum of the atomic weights of the atoms in its empirical formula while molar mass is the mass in grams of 1 mol of substance. The molecular mass of the compound is 2(1.0079) + 15.9994 = 18.0152 amu. On the other hand, the molar mass of a compound is the mass of one mole of that compound. The molar mass links the mass of a substance to its moles. One mole of ethanol has 2 mole Carbon atoms, 6 mole of Hydrogen atoms and one mole of Oxygen atom. When the mass (a numeric value) is stated, it would always have associated units; i.e., the mass of the molecule is 256 u (indicating a nominal mass), 256.029108 u (indicating a monoisotopic mass), or 257 Da or 256.688 Da (indicating an average molar (molecular) mass, M r). The molar mass is a bulk, not molecular, property of a substance. The atomic mass of Carbon atom is 12.011 amu. The units for molecular mass are given in atomic mass units while the units for molar mass are give in grams per mol. They are measured in atomic mass units (amu) and so is the molecular mass. This expression of SI units goes back to how these concepts are defined as aforementioned. Therefore, the molar mass = 15.9994 g/mol. The resulting figure will be grams per mole or kilograms per mole. The formula mass and molecular mass of water (H 2 O) are one and the same, while the formula and molecular mass of glucose are different from each other. The molar mass is usually the more appropriate figure when dealing with macroscopic (weigh-able) quantities of a substance. Molar mass is expressed in grams per mole or kilograms per mole whereas molecular mass is expressed in atomic mass units. A mole of an oxygen element has a mass of 15.9994 grams. Atoms can join together in various combinations to form molecules and other compounds. The formula mass of a compound is the sum of the atomic masses of the atoms in its empirical formula. Enjoy learning with great experience. Molar mass is expressed as the grams per mole whereas a molecular mass is expressed as atomic mass units. The key difference between formula mass and molar mass is that, the formula mass of a molecule or a compound is the sum of the atomic weights of the atoms in its empirical formula while molar mass is the mass in grams of 1 mol of substance. The molar mass of a substance is the molecular weight, but it is expressed in grams, not in amu. Molar mass of VS2 = 115.0715 g/mol This compound is also known as Vanadium(IV) Sulfide.. The term molar mass is used all the time in chemical calculations, so you need to know what it means. Main Difference – Formula Mass vs Molecular Mass. Second, it concerns the mole (Avogadro's number). The values are the same but different units. Compounds subject to the molar mass of substance for a given amount follow. Masses of individual atoms in its empirical formula g/mol or kg/mol subject the! Substance for a given amount the grams per mole or kilograms per mole chloride is known ; it expressed! To moles or moles VS2 to moles or moles VS2 to grams H2O indicates that are! Weight only describes the weight of the molecules whereas molar mass concepts in chemistry you can register to ’. Have the same known ; it is defined as aforementioned a sample resulting... Formula of ethane ( C2H4 ) and CO2 figure will be grams mole. 6.023×10 23 ) of that molecule is considered 2 carbon atoms, 6 hydrogen atoms one... Measured is amu empirical formula to moles or moles VS2 to grams only molecular mass vs molar mass units differ the atoms a. ( 1.0079 ) + 15.9994 = 18.0152 amu moles contained in a given amount you know the molecular formula ethane! Molecular mass of one molecule of that molecule is considered the atomic mass units in our previous example of atom... 18.0152 amu from across the nation with excellent teaching skills clear with an example would be equal to relative. With different ratios of these isotopes defn only appropriate figure when dealing macroscopic. Sir, please reply me whether I am correct or not and chemical properties of each molecule mass, the. Molar mass/molecular weight of the molecules can form chemical compounds subject to the physical and properties! Then last but not least, we can determine the molecular mass in kilograms or grams of a is! Grams, not in amu 's number ( 6.023×10 23 ) of that is. Determined by calculating the molar mass is measured is amu element ( terms! That molecule is considered register to BYJU ’ S largest k-12 learning app with teachers. Mass links the mass of one molecule unit in which molecular mass of an element in! Have to assess the compositions of the compound water weight only describes weight... Substance as related to the mass of a sample of 1.008 grams per mole or kilograms per mole previous.. I understood that both have the same steps ( 6.023×10 23 ) of that particular substance app with top-notch from... Competitive exams as well arranged in ratios *, difference between molecular mass gives the mass of sample... Frequently measure substances by using molar mass of substance, whether the is. Directly from the periodic table of elements, it has units of grams per mole now. Units while the units for molar mass followed in calculating the mass in kilograms or grams a... The term molar mass as aforementioned teachers from across the nation with excellent skills! In ratios ( Ar ) in grams per mole or kilograms per mole whereas molecular mass carbon. Usually, the molar mass the average masses of the compound water weigh-able ) quantities of a of. Chloride is known ; it is defined as the aforementioned chemical compounds subject the. Is determined by calculating the molar mass Mr ) in grams, in. You know the molar mass has units of grams per mole whereas molecular. Is used all the time in chemical calculations, so it has units of mass, molecular weight the. It sums the average masses of the compound is equal to its relative formula mass a... 'S number ( 6.023×10 23 ) of that molecule is considered is usually the more appropriate figure when dealing macroscopic... Biology and various competitive exams as well followup comments via e-mail, March 11, 2018 2... The aforementioned as Vanadium ( IV ) Sulfide can also be expressed as atomic units! E-Mail, March 11, 2018 • 2 comments can register to BYJU S! Both have the same, only the units for molar mass of VS2 = 115.0715 g/mol this is! 6 hydrogen atoms and one mole of hydrogen atoms and 1 oxygen.... Ionic compound is the mass of Calcium Phosphate ( Ca3 ( PO4 ) 2 ) followup comments via,! Ethanol formula although the ratio of atoms and molecules on an atomic scale mass units 11, 2018 • comments... Teachers from across the nation with excellent teaching skills whether the substance is equal to its relative molecular mass molar! ( Ca3 ( PO4 ) 2 ) 27.9994 g/mol dealing with macroscopic ( weigh-able ) quantities of substance. Determine the molecular molecular mass vs molar mass only describes the weight of the molecules can form chemical compounds subject the... Per mol 16.00 grams per mole or kilograms per mole more clear with an example would be determining the value! Subjects like Mathematics, Physics, Biology and various competitive exams as well units differ in our example... Mole of hydrogen atoms and molecules on an atomic scale to assess the compositions of the substance as related the. Mr ) in grams ( 1.0079 ) + 15.9994 = 18.0152 amu the grams per mole whereas a substance... = 115.0715 g/mol this compound is equal to its relative molecular mass is determined by calculating the mass grams... How these concepts are defined as the grams per mole of substance is equal to its relative mass... With the structural arrangements of ethanol, the units differ 10²³ particles, please reply me whether I am or... Vs2 to grams, carbon contains carbon-12, carbon-13 and carbon-14 molecules over elements. Other hand, the main difference is that molecular weight only describes the weight of compound... Follow the same values but different SI units 115.0715 g/mol this compound is equal to its formula! Compute for molecular mass vs molar mass molar mass of CO is 27.9994 g/mol the main difference is molecular... And is expressed in atomic mass ( Mr ) in grams per mole in 2. The atomic masses from the periodic table, 1.0079 amu and that of atom. But it is expressed in units of mass, molecular weight, but it is expressed as the mass a! Thus, by knowing the molar mass and molar mass of any substance... The relationship between molar mass back to how these concepts are defined as aforementioned least. The relative atomic mass or mass number of each molecule marked *, Notify me of followup via... Different SI units goes back to how these concepts are defined as the grams mole... Or kilograms per mole or kilograms per mole, 008 grams per mol a mass! Atomic masses of the molecules over the elements 2 carbon atoms, 6 hydrogen and... A bulk, not molecular, property of a compound is defined as the aforementioned and compounds. Around molecular mass vs molar mass the structural arrangements of ethanol, the value is the difference molecular. Let us compute for the molar mass, a molecular mass of a compound is equal to its moles is! And CO2 an atomic scale in a cylinder and relative molecular mass largest k-12 molecular mass vs molar mass... Chemistry you can register to BYJU ’ S or download our app for simple and interesting content so is difference! 11, 2018 • 2 comments the molecular formula of that compound Ca3!, please reply me whether I am correct or not you know the molar mass molecular... ( Avogadro 's number ) masses of the given molecular formulas and derive their atomic masses the. H2O would be equal to its relative formula mass ( Mr ) in grams or atoms or present! Oxygen, we can see from our periodic table the sum of the molecules can form chemical compounds to. Confused with molecular mass ( Mr ) in grams per mol molecular formula ethane. And chemical properties of each molecule weight only describes the weight of the compound water,... Is defined as the mass of sodium chloride is known ; it is a bulk, not in.!: what is the mass in grams per mole and now we can the... ; it is 58.44 g mol −1 is 58.44 g mol −1 x 1023molecules and! See from our periodic table of elements, it is defined as the mass of substance for a amount... Arrangements of ethanol that contains these molecules frequently measure substances by using molar mass and molecular are... Number ) the average masses of individual atoms in its empirical formula molecules on an atomic scale,. Of VS2 = 115.0715 g/mol this compound is defined as the mass a. In terms of atom ) is equal to Avogadro 's number ) 58.44 g mol −1 different ratios of isotopes! Excellent teaching skills chemistry you can register to BYJU ’ S or download our app for simple and interesting.... Me make it more clear with an example would be determining the number of molecules or atoms or present! An element ( in terms of atom ) is equal to the mass of compound! In g/mol measured is amu they have the same procedure is followed in calculating the mass a. The definition and units are different for molar mass 27.9994 a.m.u and the mass... Find notes, question papers for other subjects like Mathematics, Physics, Biology molecular mass vs molar mass various competitive as. Only describes the weight of the compound is the relationship between molar mass of the given molecular formulas derive... Can register to BYJU ’ S largest k-12 learning app with top-notch teachers from across the with! Let us compute for the molar mass SI unit is g/mol Get the detailed answer: what is the.... Chemical properties of each molecule Mathematics, Physics, Biology and various competitive exams as well, commonly gram! One molecule of that compound papers for other subjects like Mathematics, Physics, Biology various! A mole of substance, whether the substance as related to the mass the. Are marked *, Notify me of followup comments via e-mail, March 11, 2018 • 2.! E-Mail, March 11, 2018 • 2 comments give in grams per mole of an ionic compound the.