The mass of one steel screw is 4.11g. Find the mass of one mole of these steel screws. Compare this value with the mass of the Earth (5.98 × 102 4kg). Which one of the two is heavier and by how many times?
Mass of one steel screw = 4.11g
Mass of Earth = 5.98 × 1024kg = 5.98 × 1027kg
We know, 1 mole = 6.022 x 1023
One mole of screws weigh = 4.11 x 6.022 x 1023 = 2.48 ×1024g
Mass of the Earth/ Mass of 1 mole of screws = 5.98 ×1027 kg / 2.48 ×1024 kg = 2.4 x 103
Therefore, we can say that the mass of earth is 2.4×103 times the mass of screws.
The earth is 2400 times heavier than one mole of the screw.