An aluminum atom has a mass of 4.48 * 10-23 g and a small airplane has a mass of 5000 kg. Use this information to answer the questions below. Be sure your answers have the correct number of significant digits. What is the mass of 1 mole of aluminum atoms?
Round your answer to 3 significant digits.
g
How many moles of aluminum atoms have a mass equal to the mass of a small airplane?
Round your answer to 3 significant digits.

1. 26.9 g

2.

Explanation:

According to avogadro's law, 1 mole of every substance weighs equal to the molecular mass and contains avogadro's number of particles.

1. 1 atom of aluminium has mass =

Thus 1 mole or atoms has mass =

2. 26.9 g of aluminium contains = 1 mole

5000 kg or 5000000 g of aluminium contains =

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