Formula weight:The same thing as molecular weight. This term is sometimes used in connection with ionic solids and other substances in which discrete molecules do not exist. Molar mass: The mass (in grams, kilograms, or any other unit) of one mole of particles or formula units. When expressed in grams, the molar mass is numerically the same as
That is, the molar mass of a substance is the mass (in grams per mole) of 6.022 × 10 23 atoms, molecules, or formula units of that substance. In each case, the number of grams in 1 mol is the same as the number of atomic mass units that describe the atomic mass, the molecular mass, or the formula mass, respectively.
The closer it is to 1, the narrower the distribution. That is, a dispersity of 1.0 would mean that all of the chains in a sample are exactly the same length, with the same molecular weight. The original idea of dispersity was based on alternative methods of measuring the molecular weight (or the chain length) of a polymer sample.
m(X12X2122C) =12 amu = 12 g/mol m ( X 12 X 2 2 12 C) = 12 a m u = 12 g / m o l. So finally we get that 1 g/mol =1 amu 1 g / m o l = 1 a m u . However, my chemistry teacher is telling me that those are two completely different things and that I am confused between the mass per atom and the mass per 6.022 ⋅1023 6.022 ⋅ 10 23 atoms.
A mole of a substance is defined as the amount that has the same number of particles as present in 12 grams of carbon-12. The Dalton is define as 1/12th of the mass of a carbon-12 atom. From these definitions, you will find that the molar mass of the carbon-12 isotope is 12 g/mol, exactly, and the molecular mass of carbon-12 is 12 Dalton, exactly. b. Mass spectral analysis indicates a molar mass of 129 g/mol. What is the molecular formula for this compound? c. Draw all the possible bond-line structures with this molecular formula. Solutions to Exercise 2. a. C 2 H 5 Cl with a molar mass of 64.5 g/mol. b. C 4 H 10 Cl 2. c. There 8 possible structures with the molecular formula C 4 H 10 Cl 22iEP.
  • r78gl2tpek.pages.dev/7
  • r78gl2tpek.pages.dev/349
  • r78gl2tpek.pages.dev/315
  • r78gl2tpek.pages.dev/486
  • r78gl2tpek.pages.dev/199
  • r78gl2tpek.pages.dev/539
  • r78gl2tpek.pages.dev/560
  • r78gl2tpek.pages.dev/122

    • is molecular mass and molar mass the same