The earth has a mass of approximately   kilograms  . The volume of the earth's oceans is approximately   cubic kilometers  , and ocean water has a mass of about   . To the nearest hundredth of a percent, what percent of the earth's mass is from the oceans?

What percentage of the Earth's surface is covered by water?*A) 50%B) 60%C) 70%D) 80%

How much of the Earth’s surface is covered with water?*1 pointAbout 71%About 50%About 3%About 15%

The density of sea water is 1.025 kg / m3 calculate the volume of the water which would be pumped into the dead sea every year.   use density = mass / volume

The Earth’s total water is estimated to be close to 1.34 × 10¹² L. Of that, the volume of salt water would be closest to:ResponsesA 4 × 1010 L.4 × 10 10  L.B 1.0 × 10¹¹ L.1.0 × 10¹¹ L.C 1.0 × 10¹² L.1.0 × 10¹² L.D 1.3 × 10¹² L.

A 1.8 g potato core is submerged in water. When it is removed, its mass is 1.9 g. What is the percentage gain in the potato's mass? Round your answer to the nearest hundredth of a percent.