It is used in the calculator below to parse chemical compound formula and obtain molar mass. The calculator below calculates mass of the substance in grams or quantity of the substance in moles depending on user's input. It also displays molar mass of the chemical compound and details of its calculation just for reference The mass and molarity of chemical compounds can be calculated based on the molar mass of the compound. The mass (in grams) of a compound is equal to its molarity (in moles) multiply its molar mass: grams = mole × molar mass. E.g. Molar mass of NaCl is 58.443, how many grams is 5 mole NaCl? grams = 58.443 × 5 = 292.215 (g A gram is a metric unit of mass (weight) which is abbreviated as g. It is the most used unit of measurement for non-liquid ingredients. This online unit converter will help you to convert the number moles to the number of grams of the atom based on the weight of the given chemical equation / formula

Molar Mass imhowpiwoo.tk/ Molar Mass of Gas calculation formula: M = 0.0821 * P * V * W / T Where: M: Molar mass of the gas P: Pressure V: Volume W: Mass of the gas T: Temperature :: Chemistry Applications:: » Chemical Elements, Periodic Table » Compound Name Formula Search » Moles to Grams Calculator.. We couldn't find a conversion between molar mass and grams Do a quick conversion: 1 molar mass = 1 grams using the online calculator for metric conversions Molecular mass or molar mass are used in stoichiometry calculations in chemistry. In related terms, another unit of mass often used is Dalton (Da) or unified atomic mass unit (u) when describing atomic masses and molecular masses. It is defined to be 1/12 of the mass of one atom of carbon-12 and in older works is also abbreviated as amu This molarity calculator is a tool for converting the mass concentration of any solution to molar concentration (or recalculating the grams per ml to moles). You can also calculate the mass of a substance needed to achieve a desired molarity. This article will provide you with the molarity definition and the molarity formula.To understand the topic as a whole, you will want to learn the mole. It will calculate the total mass along with the elemental composition and mass of each element in the compound. Use uppercase for the first character in the element and lowercase for the second character. Examples: Fe, Au, Co, Br, C, O, N, F. You can use parenthesis or brackets []. Finding Molar Mass. Read our article on how to calculate molar.

The mass molarity calculator tool calculates the mass of compound required to achieve a specific molar concentration and volume. To dilute a solution of known molarity, please use the Solution Dilution Calculator. To dilute a solution of concentrated acid or base of known w/w% strength, please use the Acid & Base Molarity Calculator Moles to Grams Calculator » Common Compounds List » Chemical Equation Balancer » Complete List of Acids » Complete List of Bases » Molar to Mass Concentration Converter » Molar Mass Calculator » Cations, Anions List » Dilution Calculator » Molarity Calculator » Compound Prefixes » Water Insoluble Compounds » Compound Quiz. Molarity Calculator NOTE: Because your browser does NOT support JavaScript -- probably because JavaScript is disabled in an Options or Preferences dialog -- the calculators below won't work. Mass from volume & concentratio

Molar mass to moles calculator can also assist in the process of checking moles or one can use Mole Fraction Calculator for same purpose. The molar mass is a valuable unit factor for some estimation. All you have to know is the component's nuclear mass and change the amu's to grams with the help of mol calculator To convert grams to moles, the molecular weight of the solute is needed. From the periodic table the molar masses of the compounds will be extracted. For KMnO4: Molar mass of K = 39.1 g Molar mass of Mn = 54.9 g Molar mass of O = 16.0 g Molar mass of KMnO4 = 39.1 g + 54.9 g + (16.0 g x 4) Molar mass of KMnO4 = 158.0 This molar mass of gas calculator is a tool that uses the ideal gas law formula to work out an unknown gas' molar mass, and the number of moles of it present.. Read on to find out more about the ideal gas law, moles, and examples & tips on how to resolve chemical equations Finding molar mass starts with units of grams per mole (g/mol). When calculating molecular weight of a chemical compound, it tells us how many grams are in one mole of that substance. The formula weight is simply the weight in atomic mass units of all the atoms in a given formula Molar Mass Calculator. The molar mass is a physical property, which is defined as the mass of a substance divided by its amount of substance in moles. In other words, it is the mass of one mole of a particular substance. The molar mass of compounds is equal to the sum of molar masses of the atoms which form the compound. Using the Molar Mass.

Molar Mass Calculator is a free online tool that displays the molar mass of the chemical compound. BYJU'S online molar mass calculator tool makes the calculation faster, and it displays the molar mass in a fraction of seconds calculate the mass in grams calculator: define gram molar volume: determining extinction coefficient: how to convert moles per liter to grams: how to get mass from molarity: calculate the molarity of 1.60 l of a solution: how to go from moles to molarity: mass to concentration calculator: molar mass of hydrated sodium carbonat Finding the molar mass of a single element is really simple. All you need to do is find the atomic mass of the element on the periodic table and report the number with the unit grams per mole or g/mol. From this, you can see that sodium's molar mass will be 22.99 g/mol. Example #2: Simple compound. CH 3 O

In chemistry, you often need to know the molar mass of the substance for calculations. There is nothing hard calculating it - you just take the standard atomic mass for all elements in the compound, multiply it by the number of atoms of the corresponding element in compound and multiply it by 1 gram/mol, the molar mass constant, and that is to obtain the corresponding dimension (gram/mole), as. * Multiply the relative atomic mass by the molar mass constant*. This is defined as 0.001 kilogram per mole, or 1 gram per mole. This converts atomic units to grams per mole, making the molar mass of hydrogen 1.007 grams per mole, of carbon 12.0107 grams per mole, of oxygen 15.9994 grams per mole, and of chlorine 35.453 grams per mole molar mass calculator Enter a chemical formula to calculate its molar mass (e.g. Fe4[Fe(CN)6]3 , NaHCO3 , ch3coonh4 , h2so4 , pb(c2h3o2)2*3h2o , caso4*1/2h2o ) and press Enter or click Calculate button Molar Mass Calculator; Significant Figures Calculator; Reaction Stoichiometry Calculator; Limiting Reagent Calculator; Oxidation Number Calculator; All Calculators; Info. Lessons & Tutorials; Chemical Mole to Gram Calculator. Chemical Formula OR Molar Mass (g) Weight. g. Moles. mol. Calculate

Molecular weight is the mass of one molecule of a substance while the molar mass is the mass of one mole of a substance. The units for molecular mass are given in atomic mass units while the units for molar mass are give in grams per mol. If you know the molecular weight, you know the molar mass ** The molar mass of the molecule is: 58**.439 grams/mol. See also our theoretical yield calculator for chemical reactions (probably your next stop to finish the problem set)

- 1. Multiply moles by the
**molar****mass****to**convert from moles to**grams**, and divide**grams**by the**molar****mass****to**convert from**grams****to**moles. 2. Conversion factor method: Write the units based on**molar****mass**information, and set up fractions to correctly cancel the units. Examples: What is the**mass**in**grams**of 0.850 moles of sulfur dioxide (SO 2) - Ask me questions on Facebook: http://www.facebook.com/chemistNATE How to Calculate the Molar Mass of elements and molecules Elements: Easy, just look at the.
- How to Calculate Millimoles to Milligrams | Sciencing verbthenepters.tk/ Apr 15, 2013 · Using a calculator, divide the number of grams by the molar mass.The result is the number of moles in your element or compound. For example, imagine you have 2 g of (NH 4) 2 S and you want to convert it to moles.The molecular mass of (NH 4) 2 S is 68.17g/mol.Divide 2 by 68.17, and you have 0.0293 moles of.
- Molar Mass. Calculate the molar mass, the amount of substance in mol and the mass. The molar mass is the ratio of mass and amount of substance. The unit for the amount of substance is mol. One mole are 6.02214085774 * 10 23 particles (Avogadro constant). One mol C-12 has exactly 12 grams
- Step 4: Add the individual atomic masses of Na and Cl, which gives 58.44276 grams per mole, which is the molar mass of NaCl. Example 2: Calculate the molar mass of sucrose (C 12 H 22 O 11 ). Step 1: Sucrose has 12 atoms of Carbon, 22 atoms of Hydrogen and 11 atoms of Oxygen
- The mass (in grams) of a compound is equal to its molarity (in moles) multiply its molar mass: grams = mole × molar mass. 8 grams of Al2O3 2) 71. —> How to Convert Between Grams and Moles —> How to Convert Between Grams and Molecules —> How to Convert Between Grams and Atoms —> Empirical and Molecular Formula Explanation Part 1 —> Empirical and Molecular Formulas by Molar Mass Part.
- Concentration calculator allows you to calculate molar concentration, mass of compound, volume and formula weight of a chemical solution

Grams to Atoms Calculator is a free online tool that displays the conversion from grams to atoms for the particle. We know that the molar mass of 1 mole of carbon is equal to 12. It means that 12 grams per mole. Also, the Avogadro constant is 6.02 x 10 23. So,. Molar mass wikipedia. Molar mass, molecular weight and elemental composition calculator. Online calculator: convert moles to grams and grams to moles I have a chemistry project due soon and on it I am asked to convert molar mass to grams. I already asked all my friends and the sub we had the day the project was assigned and they both had no clue and my book is just too confusing to properly explain it

- Molar Mass of a Hydrate (Molar Mass, Molecular Weight, Gram Formula Mass) Mole Conversions . Reading Compounds that have water attached (hydrates
- e the number of moles of solute. This..
- Molar mass calculator also displays common compound name, Hill formula, elemental composition, mass percent composition, atomic percent compositions and allows to convert from weight to number of moles and vice versa. Computing molecular weight (molecular mass

- Shows how to use molar conversions to convert from grams to moles and moles to grams. You can see a listing of all my videos at my website,.
- e the Molar mass and Percent mass composition of a linear chemical formula. Enter a valid molecular formula and press the calculate button to deter
- When calculating a density from a mass and volume figure, it's important to remember that density can be affected by pressure and temperature, particularly where gases are concerned. The density calculator uses the density formula: Density = Mass ÷ Volume. To calculate density, you divide the mass by the volume
- The base SI unit for mass is the kilogram and that for amount of substance is the mole. Thus, the derived unit for molar mass is kg/mol. However, for both practical and historical reasons, molar masses are almost always quoted in grams per mole (g/mol or g mol −1), especially in chemistry
- Mass (g) = Concentration (mol/L) x Volume (L) x Molecular Weight (g/mol) An example of a molarity calculation using the Tocris molarity calculator. What is the mass of compound required to make a 10 mM stock solution in 10 ml of water given that the molecular weight of the compound is 197.13 g/mol? Enter 197.13 into the Molecular Weight (MW) bo
- es the molar mass of a substance, it will be easy to measure out one mole of that substance
- Grams to Moles Calculator. Mole is a standard measurement of amount which is used to measure the number atoms (or) molecules. 1 mole of something is equal to 6.0221415x10 23 of it. This online unit converter will help you to convert the grams of a molecule to the number of moles based on the weight of given chemical equation / formula

- e the mass of chemical needed to.
- Molar mass = (2 x 1.008) + (2 x 15.999) Note the use of more significant figures for oxygen Molar mass = 34.016 grams/mol Multiply the molar mass by the number of moles to get the grams: grams of hydrogen peroxide = (34.016 grams/mol) x (0.700 mol) = 23.811 grams
- Kilogram per mole (kg/mol - Molar mass units), molar mass Type the number of Kilogram per mole (kg/mol) you want to convert in the text box, to see the results in the table
- Use the molar mass calculator to easily get an accurate set of data describing any compound Features: - No annoying ads - Clear formatting everywhere with subscripts - Automatic suggestions of over 2000 of the most common elements and compounds - Automatic correction when a known compound has an incorrect subscript (the number after the element) - Presents identified elements in a list.

- The mass and molarity of chemical compounds can be calculated based on the molar mass of the compound. The mass (in grams) of a compound is equal to its molarity (in moles) multiply its molar mass: grams = mole × molar mass. Mar 13, 2018 How to Convert Atoms to Grams With a Calculator. Use Avogadro's constant to easily convert one or more.
- Using a calculator, divide the number of grams by the molar mass. The result is the number of moles in your element or compound. For example, imagine you have 2 g of (NH 4) 2 S and you want to convert it to moles. The molecular mass of (NH 4) 2 S is 68.17g/mol. Divide 2 by 68.17, and you have 0.0293 moles of (NH 4) 2 S
- If you know how to find the molar mass then conversion between moles and grams become much easier than your expectations. The concept could be more clear with a little practice of problems. Grams to Moles Conversion Formula. Most of us had a small scale at our home that is used to measure the amount of flour, sugar etc

Molar mass usually is expressed in grams (g) or kilograms (kg). Molar Mass of an Element . The molar mass of sodium metal is the mass of one mole of Na. You can look up that answer from the table: 22.99 g molar mass= grams /moles , so we need to find the grams and divide that # by the number of moles . 1. Set up this equation and place the grams on top. Now you need to find the moles to complete the problem. molar mass= grams: moles: 2. Determine the change in boiling (or freezing) point temperature (solution and pure solvent)

** 2) Get the molar mass: The molar mass for KClO 3 is 122**.550 g/mole. Please note the unit of 'g/mole.' It is important for proper cancelling of units that you remember to write this unit down when using a molar mass. 3) Following step three, we obtain: 2.50 moles x 122.550 g/mole = 306.375 grams The molar mass definition of a compound is how many grams are in one mole of the compound. The molar mass of an element can be found by looking at the number below the symbol on the periodic table. It is most useful when making solutions in the lab, so you can find how much compound to weigh out Element or Compound # of Moles Molar Mass in g/mol Mass in grams # of particles Hydrogen, H 1 mole 1.01 g/mol 1.01 g 6.02x1023 atoms Hydrogen, H 0.2 moles 1.01 g/mol 0.201 g 1.20x1023 atoms Lithium, Li 9.4 moles Oxygen, O 25g Water, H2O 2.20x1023 atoms Sodium, Na 0.23 moles Chlorine, Cl 127g Sodium Chloride, NaCl 1.20x1024 atoms Sulfur Dioxide, SO2 0.15 moles Copper (II) Sulfate, CuSO4 350g. How do you Calculate the Molar Mass of a Substance? Molar mass of a substance is the mass of one mole of the substance in grams. It has a unit of grams per mole (g mol-1).; One mole of any substance contains 6.02 × 10 23 particles. Therefore, the molar mass of a substance contains 6.02 × 10 23 particles of the substance.; The molar mass of any substance is numerically equal to its relative. The molar mass of a substance is the mass in grams of 1 mole of the substance. As shown in this video, we can obtain a substance's molar mass by summing the molar masses of its component atoms. We can then use the calculated molar mass to convert between mass and number of moles of the substance

Calculating Molar Mass. In the laboratory, freezing point or boiling point data can be used to determine the molar mass of an unknown solute. Since we know the relationship between a decrease in freezing point and the concentration of solute, if we dissolve a known mass of our unknown solute into a known amount of solvent, we can calculate the molar mass of the solute The molar mass of elements in grams per mole is numerically equal to their atomic mass in unified atomic mass units (u) or daltons (Da). The molar mass of compounds is equal to the sum of molar masses of the atoms which form the compound. For example, the molar mass of water (H₂O) is approximately 1 × 2 + 16 = 18 g/mol

Calculator Use. This online conversion calculator will convert among different units of weight or mass. For more specific calculations use avoirdupois unit conversions and troy unit conversions. How to Convert Units of Weight. Conversions are performed by using a conversion factor Usually, the units for molar mass are gram/mol. A mole of an oxygen element has a mass of 15.9994 grams. Thus the molar mass would be 15.9994 g/mol. For a carbon dioxide compound, for example, the molar mass is defined as the mass of 1 mole of molecules in that compound

The **mass** in **grams** of one mole of any substance is its **molar** **mass**. The **molar** **mass** of any element is numerically equal to its atomic **mass**. For instance, one mole of oxygen has a **mass** of 15.99g./mol One mole of fluorine gas has a **mass** of 18.99g/mol. To find the **mass** of a compound, you must add up the individual masses of its component elements You start by determining the empirical formula for the compound. Determine the mass in grams of each element in the sample. If you are given percent composition, you can directly convert the percentage of each element to grams. For example, a molecule has a molecular weight of 180.18 g/mol. It is found to contain 40.00% carbon, 6.72% hydrogen and 53.28% oxygen 1) 17.0 grams are given in the text of the problem. 2) The molar mass is 34.0146 grams/mole, which is calculated using the formula and the atomic weights on a periodic table. You may want to calculate this value as a double-check of your mastery of calculating molar masses. 3) Divide the grams given in the problem by the substance's molar mass

Measurement units, Molar Mass Conversion, Molar Mass Converter, Chlorine (Cl) - standard atomic weight, Chlorine molecules (Cl₂) - molecular mass, Grams per mole(g/mol), Hydrogens (H) - standard atomic weight, Hydrogen molecules (H₂) - molecular mass, Iron (Fe) - standard atomic weight, Kilograms per mole(kg/mol), Oxygen (O) - standard atomic weight, Sulfur (S) - standard atomic weight. Since molar mass conversions involve grams and moles, the kilograms must first be converted to grams: $$34.0 kg H_2O \times \frac{1000 g H_2O}{1 kg H_2O} = 34000 g H_2O$$ Now find the molar mass of water (this is something you may eventually have memorized, as it is a common substance in real-world applications): $$2(1.01) + 16.00 = 18.02$

- Moles of the liquid = Mass in grams / Molar mass. So, Molar mass can be calculated as: Molar mass = Mass in grams / Moles of the liquid. This method of finding the molar mass of a liquid is called as VICTOR- MEYER'S METHOD. Molar mass calculator Significance on Molar Mass. There is a difference between molecular mass and molar mass
- Molar mass calculator allows you to calculate molar mass of different gases, or set parameters of gas like volume, weight, temperature and pressure to calculate its molar mass
- <p>Molar massis a unit that enables scientists to calculate the weight of any chemical substance, be it an element or a compound. We may be able to balance a chemical equation We present the results in a table at the bottom of process. Formula: The relative atomic mass indicates how many times larger the mass of a given atom is than 1/12 the mass But how would you </p> <p>Then copy and.
- To prepare a solution from a solid reagent, please use the Mass Molarity Calculator. To dilute a solution of known molarity, please use the Solution Dilution Calculator. concentration and select molar or normal for the solution you want to prepare. 4. 70% Nitric Acid means that 100 grams of this acid contains 70 grams of HNO 3
- Molecular weight calculator (molar mass). Convert between moles and grams. Mole, moles to grams conversion - endmemo. Moles to grams conversion formula. Online calculator: convert moles to grams and grams to moles. Avogadro's number to calculate mass of a single atom. Mass molarity calculator | sigma-aldrich. G gram conversion chart weight and.

mass of one molecule of water in grams: molar mass conversion chart: convert atoms to grams calculator: grams to grams per mole: molar mass to grams conversion: from mass to moles: grams to moles chemistry: calculate the molarity of 29.25 grams of nacl in 2.0 liters of solution: dalton gram per mol: formula to convert grams to mole This calculator converts molar concentration to percentage or vice versa. Beta version # density (d) and molar mass (M) and want to calculate molar concentration (Cm) I know molar concentration (Cm), is the amount of grams of substance per 100 grams of the solution expressed as a percentage Find the molar mass. For the compound in question, calculate the molar mass by using a periodic table. Multiply the moles by the molar mass. Multiply the number of moles in the compound by the molar mass of the compound. The moles cancel out, and the final answer is in grams You can convert molarity into grams per liter by multiplying it with the molecular (Molar) mass, i.e. the number of grams/Mol. Molarity is Mol/L which when multiplied with the Molecular Mass (sometimes also called Molecular Weight) becomes grams/..

formula units to grams calculator. Molecular weight calculator (molar mass). How to calculate concentration in ppm | sciencing. Burrow. Clogs Mass molarity calculator | sigma-aldrich. Conversion calculator. Free templates for pumpkin carving. Effervescent. Density calculator This molarity calculator estimates the molar concentration of a solution by using the mass, volume and molecular weight. You can read more on the molar concentration and how to calculate the number of moles for a solution below the form Molar Volume is the volume occupied by one mole of a substance which can be a chemical element or a chemical compound at Standard Temperature and Pressure is calculated using Molar Volume=(Atomic Weight*Molar Mass)/Density.To calculate Molar Volume, you need Density (ρ), Atomic Weight (Atomic Wt.) and Molar Mass (M).With our tool, you need to enter the respective value for Density, Atomic. What exactly is molar mass, and how is it used? The molar mass of a compound (sometimes to referred to as molecular weight) is the cumulative atomic weight of all the atoms/elements in the compound. For example, 1 mole of water (H 2 O) has a molar mass of roughly 18.0 grams Mass (g) = Concentration (mol/L) x Volume (L) x Molecular Weight (g/mol) An example of a molarity calculation using the molarity calculator What is the mass of compound required to make a 10 mM stock solution in 10 ml of water given that the molecular weight of the compound is 197.13 g/mol

Chemical Formula OR Molar Mass (g) Weight. Molarity calculator omni. Molar solution concentration calculator physiologyweb. Molarity and concentration calculators: novus biologicals. Molarity calculator and converter. Calculations using molarity. Molarity calculator | selleckchem. Com. Molarity formula. Mass molarity calculator toolbox citeab. Hello bio molarity calculator Mole fraction calculator uses mole fraction formula to get accurate results. Our mole calculator makes it easy to convert grams to moles and moles to grams Molar Mass Calculator. Chemical Calculator Molar Mass Empirical Formula Degree of Unsaturation Unit Converter Lattice Energy d-d Spectrum d-d Spectrum (Jahn-Teller effect) Quadratic Equation Cubic Equation Quartic Equation Quintic Equation Radiation Dose Food Energy Requirements Crystal Structures Colour and Light Molecular Orbital Diagrams

© 2007 Joseph T.E. Roland www.Cytographica.co 3 2 Molar mass: 187.56 g/mol 3.48 x 10 unit cells24 6.02 x 10 unit cells23 1 mole 1 1 mole 187.56 g Answer: 1084 grams of copper(II) nitrate Given Mass Moles Number of Particles (grams) (moles) (atoms, molecules, unit cells) menu 1 Chemistry calculator. Mass molarity calculator | sigma-aldrich. Molar mass calculator. Ti-83/84 plus basic science programs (chemistry) ticalc. Org. Ppm: parts-per million. Ideal gas law equations formulas calculator moles. Online calculator: convert moles to grams and grams to moles. Correct use of a scientific notation on a scientific calculator Molar mass is in grams per mole. You have grams and you have moles so how do you get it into grams per mole? You divide the number of grams by the number of moles since molar mass is grams per mole. 0.300 g/0.005 mol=60 g/mo

To work out a calculation, student must also know that the molar mass of the substance, which can be found from its chemical formula and is given in grams per mole. Letting N be the number of molecules or moles of the substance, the formula to convert from molecules to grams is then given as (N number of molecules) /(6.022 x 10^23) x (substance's molar mass in grams/mol) Examples of molar mass computations: NaCl, Ca(OH)2, K4[Fe(CN)6], CuSO4*5H2O, water, nitric acid, potassium permanganate, ethanol, fructose. One mole of pure carbon-12 has a mass of exactly 12 grams.The molar mass is a physical property, which is defined as the mass of a substance divided by its amount of substance in moles Molarity is moles/liter. From moles/liter, you can calculate mass in grams by converting the moles to grams using molar mass, and then use the volume to calculate the final mass in that volume ** 10**.3: Molar Mass Last updated; Save as PDF Page ID 53767; Molar Mass. Molar Masses of Compounds; Summary; Contributors and Attributions; I want to make a solution that contains 1.8 moles of potassium dichromate. I don't have a balance calibrated in molecules, but I do have one calibrated in grams

Mass molarity calculator | sigma-aldrich. Tamer's Molarity calculator | molarity triangle | tocris bioscience. Convert grams per mole [g/mol] grams per mole [g/mol] Formula:cuso4.5h20 Enter a chemical formula to calculate molar mass,The molar mass calculator can be used in Chemical industry and medicine industry Formula mass = the sum of the atomic masses of each atom in a formula unit . The formula mass of sodium chloride is equal to the sum of the atomic masses of sodium and chlorine, which can be found on the periodic table. Formula mass NaCl = 22.9898 + 35.4527 = 58.4425 . The number of grams in the molar mass (grams per mole) of any ionic compound. The molar mass of zinc nitrate will be equal to (1 atom x 65 grams/mole of zinc) + (two atoms x 14 grams/mole of nitrogen) + (six atoms x 16 grams/mole of oxygen) = 189 grams/mole of zinc nitrate. For all other compounds, the general idea is the same grams of glucose →→→→moles of glucose →→→→moles of oxygen Moles of O = 70.0 g of C 6H 12O x 1mol C H O6 x 6 mol O Molar mass Molar ratio 180.1 g mol C6H12 O6 = 2.33 mol O Strategy: Once the number of moles of a substance present is known, we can use: - Molar mass to find the number of grams

Member Log In. Molar Mass Calculator. Conver But at the same time, this molar mass (as many now prefer to call it) is also the observable mass of one mole (N A) of the substance, so we frequently emphasize this by stating it explicitly as so many grams (or kilograms) per mole: g mol -1. It is important always to bear in mind that the mole is a number and not a mass Molar mass is the mass of 1 mole (in grams) and is equal to the numerical value of the average atomic mass of the element (get from periodic table) 1 mole of C atoms = 12.0 g; 1 mole of Mg atoms = 24.3 g; 1 mole of Cu atoms = 63.5 ** Molar mass, symbol M,is the mass of one mole of a substance (chemical element or chemical compound)**.It is a physical property which is characteristic of each pure substance. The base SI unit for mass is the kilogram but, for both practical and historical reasons, molar masses are almost always quoted in grams per mole (g/mol or g mol-1), especially in chemistry