. According to the CIA website, the total surface area of the United States is 9

Question

. According to the CIA website, the total surface area of the United States is 9,631,418 km2. Calculate the percentage of Earth's total surface area covered by the U.S. ___________

Calculate the percentage of Earth's total surface area covered by each of the three major oceans.

2. Atlantic: ____________ %

3. Indian: _____________ %

4. Pacific: _____________ %

What is the most abundant ion in seawater? _________ Is it an anion or a cation? _________

. What is the second-most abundant ion in seawater? _________ Is it an anion or a cation? _________

Use the equation for density (D = Mass / Volume), to solve the following problems. 10. What is the mass of 4000 cm3 (= 4 liters, or about 1 gallon) of pure water (D = 1.00 g/cm3)? ____________ g 11. How much more mass is there in 4000 cm3 of seawater with a D of 1.035 g/cm3 than in 4000 cm3 of freshwater? ___________ g

Explanation / Answer

the percentage of Earth's total surface area covered by the U.S. is about 7 %

Calculate the percentage of Earth's total surface area covered by each of the three major oceans.

2. Atlantic:20 %

3. Indian: 14 %

4. Pacific: 30 %

What is the most abundant ion in seawater? chloride Is it an anion or a cation? anion

What is the second-most abundant ion in seawater? Sodium Is it an anion or a cation? cation

10. What is the mass of 4000 cm3 (= 4 liters, or about 1 gallon) of pure water (D = 1.00 g/cm3)? 4000 g

11. How much more mass is there in 4000 cm3 of seawater with a D of 1.035 g/cm3 than in 4000 cm3 of freshwater? 4140 g

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