Mathematics, 23.09.2020 16:01 biglue19
Earth’s surface area is 5.1 x 10 8 km 2 , its crust has an average thickness of 35 km and an average density of 2.8 g/cm 3 . The two rarest (non-radioactive) elements in the crust are ruthenium and rhodium, each with an abundance of 1.0 x 10 -4 g/metric ton crust. What is the total mass of these two elements in the earth’s crust? (1g = 1 x 10 -6 metric ton)
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Earth’s surface area is 5.1 x 10 8 km 2 , its crust has an average thickness of 35 km and an average...
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