How many atoms are needed to create 2 molecules in Na-CI?

Answer 1

1 mole has Avogadro's number of molecules, regardless of the formula for the molecule. 2 moles has 2 times Avogadro's number of molecules. Avogadro's number is approx 6.02 x 10e23 (that's 6.02 x 10 raised to the 23rd power). So multiply that by 2.

Answer 2

First of all, you should understand what are atoms, molecules and moles. Atom: The smallest and simplest particle of an element. ex) Na or Cl Molecules:The smallest unit into which any substance can be divided without losing its chemical properties, usually consisting of two or more atoms. For this reason, NaCl is not a atom anymore, yet it is a molecule. ex) NaCl Mole: The number of particles (atoms or molecules) contained in a sample of element or compound with a mass in grams equal to the atomic weight of an element or molecular weight of a compound. We follow Avogadro's number which is 6.02 X 10^23, which means the number of ions, atoms, particles, molecules in one mole. NaCl is not atoms, but it is molecules. Calculation: 2 moles of NaCl X ((6.02 X 10^23 molecules)/ 1 mole of NaCl) = 1.20 X 10^24 (Scientific notation& Significant figures) Also, the number of atoms of Na = 6.02 X 10^23 in one mole.

Answer 3

In a mole there is 6.022 x 1023 atoms. In two moles there are twice that amount.

Answer 4

there are two because without the second one the first dosent exist .

Answer 5

3