contestada

1.86 Earth’s surface area is 5.10x10⁸ km²; its crust has a mean thickness of 35 km and a mean density of 2.8 g/cm³. The two most abundant elements in the crust are oxygen (4.55x10⁵ g/t, where t stands for "metric ton"; 1 t = 1000 kg) and silicon (2.72x10⁵ g/t), and the two rarest nonradioactive elements are ruthenium and rhodium, each with an abundance of 1x10⁻⁴ g/t. What is the total mass of each of these elements in Earth’s crust?

Respuesta :

Oxygen weighs 2.28 x 10^7 kg in total, silicon weighs 1.36 x 10^7 kg, while ruthenium and rhodium individually weigh 5 x 10^3 kg.

The Total mass of Earth must first be determined. The density is multiplied by the surface area and thickness to achieve that. There are 5 x 10 10 kilogram in total. Each compound's rates are expressed in terms of one metric ton. The total mass of any chemical is calculated by multiplying that amount by the mass of the  Earth. The solutions are 2.28x10^7 kg, 1.36x10^7 kg, and 5x10^-3 kg for oxygen, silicon, and the two rarest non-radioactive elements, respectively.

Learn more about Total mass of earth here:-

https://brainly.com/question/12147902

#SPJ4