How to use seawater to make gold?

19 19, after World War I, Germany was completely defeated. The war exhausted all Germany's materials and financial resources, the whole country's production shrank, the economy declined, inflation was serious, millions of people were unemployed, and people's lives were extremely poor. Under this circumstance, the German government has to pay 50,000 tons of gold war reparations to the allies, and the whole country is in a depressed atmosphere. Just then, a man stood up and shouted, "Friends, don't worry about the national debt. You can extract gold from seawater and repay the national debt."

This man is a world-famous German chemist named Haber. Habai thinks that there are 5.5 million tons of gold in the sea. As long as110 can be extracted, there will be 550,000 tons. So, he made a report to the German government, made suggestions, and made a detailed experimental plan. The German government agreed to this plan, allocated funds for his research, and sent a marine survey ship named Meteor for his use.

Haber let go of his hands and feet and boldly did it. He transformed Meteor into a mobile factory for extracting gold from seawater. Meteors are in the Atlantic Ocean, constantly extracting metals from the ocean. After seven years of hard work, Haber has done thousands of experiments and tried various methods.

However, due to the low concentration of gold in seawater, the gold content per ton of seawater does not exceed 0.000006 g. Although several tons of seawater have been treated, little gold has been obtained, which has no economic significance. So, 1928, facing the vast sea, Haber had to admit his failure and live up to the love and expectations of his fellow villagers.

Although Haber's plan failed, people did not give up their ambition to extract gold from seawater, because this wealth in seawater is so attractive after all. Please calculate it carefully. There are 654.38+04 billion cubic kilometers of seawater in the whole sea area. Even if there is only 0.000006 gram of gold in each ton of seawater, there are 9 million tons of gold in total. Extract them all and distribute them equally to all people on the earth. Then, everyone can get 1 kg of gold, regardless of men, women and children. American scientists have done experiments in the bromine factory in Carolina, and extracted 0.09 mg of gold with 12 tons of seawater, valued at 0.000 1 USD. At present, there are more than 50 patents for extracting gold from seawater in the world. Unfortunately, no one has bought any patents yet. It is believed that nothing in the world can defeat human beings with infinite wisdom. By 2 1 century, human beings will be able to "turn the stone into gold".