Determine the number of representative particles in each of the following and identify the representative particle.
a. 13.0 mol Ag
b. 23.7 mol H20
c. 0.178 mol NaCl
I'll do the first one for you.
13.0 mol Ag x (6.02 x 10^23 atoms Ag/1 mol Ag) = ?? atoms Ag.
I assume the second one will be molecules H2O and the third will be Na ions and Cl ions.
To determine the number of representative particles in a given amount of substance, we need to know Avogadro's number, which represents the number of particles (atoms, molecules, or formula units) in one mole of a substance. Avogadro's number is approximately 6.022 x 10^23 particles per mole.
a. To determine the number of representative particles in 13.0 mol of Ag, we can multiply the given amount by Avogadro's number:
Number of Ag atoms = 13.0 mol Ag x (6.022 x 10^23 atoms/mol)
The representative particle in this case is an atom of silver (Ag).
b. For 23.7 mol of H2O, we can apply the same calculation:
Number of H2O molecules = 23.7 mol H2O x (6.022 x 10^23 molecules/mol)
The representative particle here is a molecule of water (H2O).
c. Similarly, for 0.178 mol of NaCl:
Number of NaCl formula units = 0.178 mol NaCl x (6.022 x 10^23 formula units/mol)
The representative particle in this case is a formula unit of sodium chloride (NaCl).