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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 \times 10^{24}kg). Which one of the two is heavier and by how many times?

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One way of screws weigh =2.475\times 10^{24}g
                                        =2.475\times 10^{21}kg
\frac{Mass \;of\; the\; earth}{Mass\; of\; one\; mole\; of\; screws}=\frac{5.98\times 10^{24}}{2.475\times 10^{21}}=2.4\times 10^{3}

Mass of earth is 2.4 \times 10^{3} times the mass of screws. The earth is 2400 times heavier than one mole of screws

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