One mole of copper(ii) sulfate, cuso4, contains o atoms.

Answer : One mole of copper(II)sulfate contains number of oxygen atoms.

Solution :

As we know that, 1 mole of contains number of atoms.

In , there are 1 number of copper atom, 1 number of sulfur atom and 4 number of oxygen atoms.

As 1 mole of copper(II)sulfate contains number of oxygen atoms.

Therefore, one mole of copper(II)sulfate contains number of oxygen atoms.

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