EVERYDAY SCIENCE

SCIENCE

EARTH SCIENCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
There are ____ million tons of gold in the sea.
A
10
B
5
C
20
D
15
Explanation: 

Detailed explanation-1: -Our oceans contain around 20 million tons of dissolved gold. However, this means there is only about one gram of gold for every 110 million tons of ocean water. Many gold deposits exist deep within the sea floor, and some deposits can often be trapped underneath rock as far down as 35, 000 feet.

Detailed explanation-2: -But that doesn’t mean people aren’t still trying. According to the National Ocean Service, our oceans hold some 20 million tons* of gold, suspended in normal seawater.

Detailed explanation-3: -In 1990, researchers figured out that there’s about one gram of gold for every hundred million tons of seawater. So I boiled down one liter of seawater and seawater contains about 50 femtomole per liter of gold, that equates to about 10 picograms. $1 gold is about 0.01769 grams of gold.

Detailed explanation-4: -There are 20 million tons of untouchable gold in the ocean Humans can’t collect it, as the gold is so diluted that it is measured in parts per trillion. About one liter of seawater might give 13-billionth of a gram.

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