Akilogram of iron contains how many moles of iron

Moles of iron for the given amount is 17.90 moles.

Explanation:

We are given 1 kg of iron and we need to find the moles of it. To calculate the moles, we use the following equation:

Mass of iron given = 1kg = 1000 grams     (Conversion Factor: 1 kg = 1000g)

Molar mass of iron = 55.85g/mol

Putting values in above equation, we get:

Hence, moles of iron for the given amount is 17.90 moles.

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