b) How many moles of bricks has a mass equal to the mass of the Earth
1 Answer
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=> 1 mole of bricks = 6.022 × 10^23 bricks
Mass of 1 mole of brick = 1 mole of bricks × mass of each brick
= 6.022 × 10^23 × 4 = 24.088 × 10^23 kg
b) x bricks × mass of a brick = mass of earth
x = mass of earth / (mass of a brick)
= 6 × 10^27 / (4000) = 1.5 × 10^24 bricks
Moles of brick = 1.5 × 10^24 / (6.022 × 10^23) ≈ 2.5 moles
Hence 2.5 moles of bricks have mass equal to mass of earth
