Table of Contents
- 1 Why is a mole 12g of carbon-12?
- 2 What is defined as the number of carbon atoms in exactly 12g of pure carbon-12?
- 3 What is meant by a mole of carbon atoms?
- 4 What is is equal to exactly 1 mole of atoms?
- 5 Why are moles used to measure atoms?
- 6 What is a mole in chemistry?
- 7 How many atoms are there in 12 grams of carbon-12?
- 8 Why is carbon the best atom for comparison of atomic masses?
Why is a mole 12g of carbon-12?
as there are atoms in exactly 12 grams of carbon-12 (i.e., 6.022 X 1023). So the mole is the title used for the amount 6.022 x 1023 much the same way the word “dozen” is used for the amount 12. This means that the atomic mass or atomic weight (12 grams) of carbon is equal to exactly 1 mole of carbon.
What is defined as the number of carbon atoms in exactly 12g of pure carbon-12?
Mole (mol): the amount of material counting 6.02214 × 1023 particles. The value of the mole is equal to the number of atoms in exactly 12 grams of pure carbon-12. • 12.00 g C-12 = 1 mol C-12 atoms = 6.022 × 1023 atoms • The number of particles in 1 mole is called Avogadro’s Number (6.0221421 x 1023).
What is the definition of a mole how many particles are in one mole and what is that number called?
the number equal to the number of carbon atoms in exactly 12 grams of pure ¹²C: Avogadro’s number. One mole represents 6.022 × 10²³ units. This number is called Avogadro’s number to honor his contributions to chemistry. One mole of something consists of 6.022 × 10²³ units of that substance.
What is meant by a mole of carbon atoms?
A mole can be defined as the amount of a pure substance containing the same number of atoms, molecules or ions as present in exactly 12g of carbon. Therefore, a mole of carbon atoms refers to a group of 6.022 × 1023 carbon atoms.
What is is equal to exactly 1 mole of atoms?
One mole of a substance is equal to 6.022 × 10²³ units of that substance (such as atoms, molecules, or ions). The number 6.022 × 10²³ is known as Avogadro’s number or Avogadro’s constant.
How is mole related to carbon-12?
A mole is the number of atoms in exactly 12 g of carbon-12. A mole of anything, then, contains as many particles as there are in 12 g of carbon 12. During the 1960s, chemists agreed to use exactly 12 g of carbon-12 as their standard. They knew that an oxygen atom has a mass of ¹⁶/₁₂ times that of a carbon-12 atom.
Why are moles used to measure atoms?
A mole is defined as 6.02214076 × 1023 of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.
What is a mole in chemistry?
The mole is the amount of substance of a system which contains as many elementary entities as there are atoms in 0.012 kilogram of carbon 12; its symbol is “mol.”. (in this definition, it is understood that unbound atoms of carbon 12, at rest and in their ground state, are referred to.)
What is the atomic weight of 1 mole of carbon?
When it comes to building your nest egg, you have more options than you may think. If 1 mole of carbon is 6.022*10^23 atoms of carbon, but 1 mole of carbon is also equal to 12 grams, then which is the atomic weight of C? Just to expand a bit on the excellent answers from Jerry and Mozi…
How many atoms are there in 12 grams of carbon-12?
The reason one mole is the number of atoms in exactly 12 g of carbon-12 is that the atomic mass scale is defined by the mass of carbon-12. That is to say, one atomic mass unit is defined to be 1/12 of the mass of a carbon-12 atom.
Why is carbon the best atom for comparison of atomic masses?
=> because atomic weight of carbon is 12 and also, no. of proton and neutron were also 6 each which sums up to 12. So it was concluded that carbon will be the best atom for comparison of atomic masses of other elements’ atom as it had exactly 12 atomic mass. Surely carbon, has an isotope with atomic mass 14.