We're told oxygen is the most common element in the Earth's solid crust. But how much oxygen is there? Let's compare to the amount of oxygen in the Earth's atmosphere, like this: The most common minerals in the Earth's crust are feldspars, and anorthite (CaAl,Si,O) is a typical feldspar, Let's assume the entire crust is made of anorthite, with a density of 2.8 g/cm³ The radius of the Earth is 6371 km and let's say the crust is the upper 75.0 km of it. Let's model the Earth's atmosphere as a layer on top of the Earth about 100 km thick with an average density of 0.99 g/m², and which is 23.1% oxygen by mass. Use this information to calculate the ratio of the mass of oxygen in the Earth's atmosphere to the mass of oxygen in the Earth's crust. Round your answer to the correct number of significant digits.
We're told oxygen is the most common element in the Earth's solid crust. But how much oxygen is there? Let's compare to the amount of oxygen in the Earth's atmosphere, like this: The most common minerals in the Earth's crust are feldspars, and anorthite (CaAl,Si,O) is a typical feldspar, Let's assume the entire crust is made of anorthite, with a density of 2.8 g/cm³ The radius of the Earth is 6371 km and let's say the crust is the upper 75.0 km of it. Let's model the Earth's atmosphere as a layer on top of the Earth about 100 km thick with an average density of 0.99 g/m², and which is 23.1% oxygen by mass. Use this information to calculate the ratio of the mass of oxygen in the Earth's atmosphere to the mass of oxygen in the Earth's crust. Round your answer to the correct number of significant digits.
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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Transcribed Image Text:We're told oxygen is the most common element in the Earth's solid crust. But how much oxygen is there? Let's compare to the amount of oxygen in the Earth's
atmosphere, like this:
• The most common minerals in the Earth's crust are feldspars, and anorthite (CaAl,Si,O₂) is a typical feldspar, Let's assume the entire crust is made of
anorthite, with a density of 2.8 g/cm³.
•The radius of the Earth is 6371 km and let's say the crust is the upper 75.0 km of it.
• Let's model the Earth's atmosphere as a layer on top of the Earth about 100 km thick with an average density of 0.99 g/m, and which is 23.1% oxygen
by mass.
Use this information to calculate the ratio of the mass of oxygen in the Earth's atmosphere to the mass of oxygen in the Earth's crust. Round your answer to thei
correct number of significant digits.
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