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What is the difference between atomic weight and atomic mass and molar mass and molecular weight?
The atomic mass is the mass of an atom at rest. This refers to one atom, and is typically measured in so-called Atomic Mass units, and describes a single isotope of that element. The atomic weight is the abundance-weighted average mass of an element (an average mass of all the isotopes that exist for that element, weighted by how abundant each isotope is in nature). Atomic weight is commonly reported in atomic mass units, as well as in grams per mole. The molar mass is the mass of one mole of something, and can refer to both a single element as well as molecules and other compounds. The molecular weight is essentially the same thing as the molar mass except that, as the name implies, it refers to molecules rather than just elements. The molar mass and molecular weight is typically given in units of grams per mole.
The molecular weight of a compound is found by adding the atomic weights of all of the atoms in the compound. Water, for example, has a molecular weight of 18.0152 grams/mole, as there are two hydrogen atoms that each have an atomic weight of 1.00079 g/mole and one oxygen atom with an atomic weight 15.9994 grams/mole.
What else can I help you with?
How do you calculate the molecular weight of KCl?
The atomic weight of potassium is 39,0983 g.The atomic weight of chlorine is 25,45 g.The molecular weight of potassium chloride (K + Cl) is 74,5483 g.
What is the molecular mass of diamond?
666 is atomic weight of diamond
What is the atomic weight of ScCL3?
The atomic weight of scandium chloride (ScCl3) is calculated by adding the atomic weight of scandium (Sc) to three times the atomic weight of chlorine (Cl). The atomic weight of scandium is approximately 44.96 g/mol, and the atomic weight of chlorine is approximately 35.45 g/mol. Therefore, the atomic weight of ScCl3 is approximately 150.31 g/mol.
How do you calculate the molecular weight and the uncertainty of the molecular weight of a unknown solute using propagated error?
To calculate the molecular weight, you need to perform a chemical analysis to determine the elemental composition of the unknown solute. Then, using the atomic masses of the elements found, you can calculate the molecular weight by summing the atomic weights of all the atoms in the molecule. To determine the uncertainty in the molecular weight, you would need to propagate the errors in the atomic masses and the elemental composition through the calculation using the rules of error propagation.
What is the molecular weight of technetium 99?
The atomic mass (not molecular weight) of technetium-99 is 98,906 254 7(21).
Is the molecular weight the same as its atomic weight?
The molecular weight is the sum of the atomic weights of all the atoms contained in the molecule.
What is the molecular weight of tantalum?
The atomic weight (not molecular) of tantalum is 180,947 88(2).
How do you calculate the molecular weight of KCl?
The atomic weight of potassium is 39,0983 g.The atomic weight of chlorine is 25,45 g.The molecular weight of potassium chloride (K + Cl) is 74,5483 g.
What is the difference between molecular weight in amu and molecular weight in grams?
The only difference is the name of the unit; the numerical values are the same. However, the value in amu is the mass of a single molecule, while the molecular weight in grams is the mass of Avogadro's number of molecules. The mass of Avogadro's number of molecules is called a Gram-mole. The molecular weight of , say, Hydrogen H2 is 2 amu. A gram mole of this would be 2 grams. The molecular weight in grams is the weight of this molecule in real grams and is an extremely small value.
What is molar atomic mass?
The atomic (molecular) weight of a substance is its molar mass.
Effective atomic weight of water?
Atomic weights refer to ATOMS. Water is a MOLECULE made up of 3 atoms, it therefore does not have an atomic weight, it has a MOLECULAR weight.You calculate the molecular weight by adding up the atomic weight of all the atoms in the molecule.Waster is made up from 1 atom of Oxygen (atomic weight 16) and 2 atoms of Hydrogen (atomic weight 1)16+1+1 = 18The molecular weight of water is therefore 18.-------------------------------------------------------------------------------------The atomic mass of H is 1.008, and the atomic mass of O is 16.So 1.008*2+16=18.016
What is the difference between treaty v executive agreement?
molarity x molecular weight x volume=gram molarity= gram/molecular weight x volume abdulrazzaq
What is the molecular mass of diamond?
666 is atomic weight of diamond
What is the molecular weight of chloride ions?
The atomic weight of chlorine is 35,45.The atomic weight of chlorine is approximately 35.5 g/mol. An addition of electron is a negligible weight difference. Therefore, the mass is considered to remain the same at 35.5 grams per mole.
What is the type of weight of a compound that equals the sum of the atomic weights of the atoms?
The molecular weight.
What is the atomic weight of ScCL3?
The atomic weight of scandium chloride (ScCl3) is calculated by adding the atomic weight of scandium (Sc) to three times the atomic weight of chlorine (Cl). The atomic weight of scandium is approximately 44.96 g/mol, and the atomic weight of chlorine is approximately 35.45 g/mol. Therefore, the atomic weight of ScCl3 is approximately 150.31 g/mol.
Is there a difference between mass and atomic mass when dealing with elements?
Generally the term "atomic mass" is used for isotopes. For elements is preferred now "atomic weight".
