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The mass of one steel screw is 4.11g. Find the mass of one mole of these steel screws

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asked Nov 6, 2017 in Chemistry by jisu zahaan (28,760 points) ● 26 ● 374 ● 810

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 × 1024kg). Which one of the two is heavier and by how many times?

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answered Nov 6, 2017 by sforrest072 (157,439 points) ● 61 ● 410 ● 937

One mole of screws weigh = 2.475 ×1024g            = 2.475×1021 kg 

Mass of the Earth / Mass of 1 mole of screws = 5.98 ×1024 kg / 2.475× 1021 kg

                                                                        = 2.4 ×10    

Mass of earth is 2.4×103 times the mass of screws 

The earth is 2400 times heavier than one mole of screws

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