Calculate the volume of sulfuric acid (mass fraction 85%, density 1.05 g / ml), which will be required to prepare a solution with a mass fraction of sulfuric
The Stone Age is named by scientists that way, because the main tools of labor during this period of history were made of stone. Also during this period,
The first important event was the journey of Bartolomeo Dias, who in 1488 was able to go around the African continent and get into the Indian Ocean. Thus,