En una reacción química se produjeron 5.02 x 1023 moléculas de ZnO. ¿A cuántos gramos corresponde esta cantidad de moléculas?

This number of molecules correspond to 67.87 g ZnO

In a chemical reaction, 5.02 x 10²³ ZnO molecules were produced. How many grams does this number of molecules correspond to?

1 mol = 6.02 x 10²³ particles(ions, atoms, molecules)

mol for 5.02 x 10²³ molecules :

mass ZnO (MW=81,38 g/mol) :

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3