Table of Contents
Why is the atomic mass equal to one mole?
Atomic mass is expressed in atomic mass units while molar mass is expressed in grams. One mole of any atom has a weight equal to the atomic mass expressed in grams. This is due to the fact that the number of atoms in a mole is chosen in such a way for this to happen ( 6.02 x 10^23).
Why is weight of 1 mole of substance equal to atomic molecular mass in grams?
Avogadro’s number is an absolute number: there are 6.022×1023 elementary entities in 1 mole. The mass of one mole of a substance is equal to that substance’s molecular weight. For example, the mean molecular weight of water is 18.015 atomic mass units (amu), so one mole of water weight 18.015 grams.
How does mole relate to relative atomic mass?
Explanation: The mole represents the link between atoms and molecules (of which we can conceive) to the macro world of grams and kilograms and analytical balances. The relative atomic mass (atomic weight) in grams/mole (g/mol) is the molar mass of a substance, which means it is the mass of one mole of that substance.
How is the mass of 1 mole of an element determined apex?
One mole of a substance is the sum of the atomic mass of the elements that make it up. The atomic mass, in grams, is the mass of one mole of atoms. The atomic mass of an element is equal to 1 mol of that element. For example, The atomic mass of oxygen is approximately 16g.
What is the mass of exactly 1 mole of each of the elements rubidium?
The mass of one mole of rubidium is 85.468 grams.
How was 1 mole determined?
The mole was previously defined as the number of atoms determined experimentally to be found in 12 grams of carbon-12. The mole is related to the mass of an element in the following way: one mole of carbon-12 atoms has 6.02214076 × 1023 atoms and a mass of 12 grams.
Does 1 mole of any element contain the same mass?
The “mol” is simply a number of units as derived by Avogadro to be 6.022×1023 units/mol. Thus, each element will have a different mass for the same number of moles.