Search results
Water of crystallization (5H 2 O): Water (H 2 O): 18.015 g/mol. Total water: 18.015×5 = 90.075 g/mol. The molecular weight of CuSO 4 ·5H 2 O is: 159.602 + 90.075 = 249.677 g/mol. This molecular weight calculator can determine the molecular weight or molar mass of a molecule based on its formula and also provides the percentage of the atoms.
- Method
- Tips
Count how many atoms of each element exist in the molecule. First, list each element present in the molecule. You may use the chemical symbol or write out the name of the element. Then, count the atoms according to the molecular formula and write them next to the element’s name or symbol.[2] X Research source For example, carbon dioxide or CO2, list that there is 1 carbon (C) and 2 oxygens ...Find the relative atomic mass of each element in the molecule. Use a copy of the Periodic Table of Elements. The Periodic Table lists the atomic mass of each element below the chemical symbol. For example, oxygen has a relative atomic mass of 15.9994 amu.[3] X Research source For carbon dioxide (CO2), the relative atomic mass is 12.011 amu for carbon and 15.999 for oxygen. The atomic mass of ...Calculate the total mass for each element in the molecule. Multiply the atomic mass of each element by the number of atoms of that element: (Atomic Mass of Element) x (# of atoms of that element). Do this for each element in the molecule.[5] X Research source In our carbon dioxide example, the mass of the single carbon atom is 12.011 amu. Since there are 2 oxygen atoms, you would write 15.999 ...Add up the mass of all the atoms to find the molecular weight. Molecular weight = ∑((Atomic Mass of Element)n x (# of atoms of that element)n)[6] X Research source Round the answer as necessary, using significant digits. Remember to use the proper units. amu is the old abbreviation for atomic mass units, but the "most correct" modern unit is a lower-case u.[7] X Research source For carbon ...Make sure that you follow the appropriate rules for significant figures as required. Thanks Helpful 3 Not Helpful 0- 162.4K
Oct 5, 2023 · Table of Atomic Elements and Weights. Calculate the molecular weight of a formula. Input the molecular formula and the weight is calculated. Also provides the atomic number, element name, base atomic weight and formula weight for the calcutated molecular formula.
Sep 24, 2024 · H = 1.00794. N = 14.0067. Next, multiply the atomic mass of each atom by the number of atoms in the compound. There is one nitrogen atom (no subscript is given for one atom). There are three hydrogen atoms, as indicated by the subscript. molecular mass = (1 x 14.0067) + (3 x 1.00794) molecular mass = 14.0067 + 3.02382.
- Anne Marie Helmenstine, Ph.D.
Mar 22, 2018 · Finding molar mass (also called molecular weight, molecular mass, and gram formula mass) is an essential skill in chemistry. All my content organized at htt...
- 4 min
- 2.2M
- Wayne Breslyn (Dr. B.)
Aug 7, 2024 · Find your elements in the periodic table of the elements. The atomic mass is usually shown below the symbol of the element. C — 12 u; H — 1 u; and. O — 16 u. Input the values into the molecular weight equation and calculate the result: MW = (6 × 12u) + (12 × 1u) + (6 × 16u) MW = 180 u. We got the right answer — the molecular weight ...
People also ask
How do you calculate molecular weight?
How do I use the molecular weight (MW) calculator?
How do you find the atomic weight of a molecule?
How do you calculate atomic mass of a molecule?
How do you find the molecular mass of a compound?
Worked example: Calculating Molecular weight. Google Classroom. Microsoft Teams. AboutAbout this video. Let's understand how to calculate the molecular weight of a molecule! Created by Vibhor Pandey.
Calculate your Ideal Body Weight - IBW to see whether you are healthy. Monitor your health status by calculate your Ideal Body Weight - IBW here.
