The number of atoms which are present in one mole of a substance is 6.023x1023 This is commonly known as Avagadro's number or Avagadro's constant (NA)
This is number of Avogadro - 6,022 140 857(74).10e23.
Avogadro's Number = about 6.022 X 1023.
it is Avogadro' s number.....
the Avogadro constant
Avogadro's constant
The name given to the number of particles in a mole is Avagadro's number/constant
The chemical name dinitrogen tetrafluoride establishes that each molecule contains exactly 2 nitrogen atoms. A mole always contains Avogadro's Number of molecules. Therefore, the required answer is 4.19 X 2 X Avogadro's Number, or 5.05 X 1024 atoms, to the justified number of significant digits.
The empirical formula for carbon dioxide is CO2 (that 2 is supposed to be small...). So, there are two atoms of oxygen in one carbon dioxide molecule (there is also a clue in the name: "di" can sometimes mean 2).
Lattice Energy
Atoms of the same element cannot have different numbers of protons. Different numbers of protons mean different elements. An atom with the a different number of neutrons is called an isotope.
The name given to the number of particles in a mole is Avagadro's number/constant
The name given to the number 6.02 x 10^23 is Avogadro's number. It represents the number of particles (atoms, molecules, or ions) in one mole of a substance.
How many moles of sulphur in 1.81 X 1024 atoms of sulphur ? The answer is 3. The fact that we are talking about sulphur is immaterial. A mole is just another name for a gram molecular weight. The number of atoms in a gmw (mole) is given by Avogadro's Number, which is 6 X 1023 no matter what the element.
Avogadro is the name given to the number of atoms (molecules) per mole of a substance.An avocado is some green vegetable. I am not sure about its numerical system.
You need the initial mole that you want to turn into particle Use that multiply by the advogadro number (6.022x10*23 ) The particle is a big term for things like atoms, or anything for the name of something that add up to a mole. 2 mole of hydrogen X 6.022x10*23 particles / mole = the # of particles
Hydrocarbons
The chemical name dinitrogen tetrafluoride establishes that each molecule contains exactly 2 nitrogen atoms. A mole always contains Avogadro's Number of molecules. Therefore, the required answer is 4.19 X 2 X Avogadro's Number, or 5.05 X 1024 atoms, to the justified number of significant digits.
A formula unit can also be referred to a mole unit. A mole or formula unit is the smallest amount of a substance that contains all the atoms or elements of a substance.
Avogadro. Also, he made a Hypothesis.
According to Avagadro's number one mole of any substance is equal to 6.022*10^23 particles. Knowing this you can calculate the number of atoms in 4.25 moles of carbon tetrabromide easily: 4.25(moles of carbon tetrabromide) * 6.022*10^23(atoms) = 2.559*10^24 So 2.559*10^24 atoms are present in 4.25 moles of carbon tetrabromide.
look @ the periodic table :)
Phosphorus pentachloride is the chemical name for the molecular formula of PCl5. At Standard Temperature and Pressure (STP) one mole corresponds to Avogadro's number of 6.02x10^23 particles. Using molar ratios we know that for every 1 mole of PCl5 we have 1 mole of P. a ratio of 1:1. Answering this question therefore is multiplying our given quantity of 2.97 moles by 6.02x10^23 yielding out answer of 1.79x10^24 atoms.