Need help asap please and ty

Take this as a hint :

The value of the mole is equal to the number of atoms in just 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 numberr (6.0221421 x 1023).

Explanation:

pure substance: iron,copper

impure substance: water,charcoal

conduction is the transfer of thermal energy (heat in transfer) due to collisions between the molecules in the object. collisions between adjacent atoms and molecules transfer kinetic energy from the warmer to the cooler object. the objects must be in physical contact.