Next, the second stage kicks in, and its five J-2 oxygen/hydrogen engines take the ship another 77 miles in six minutes. Then the third stage engine pushes the craft to the 17,500 mph required to escape Earth's gravitational pull and get into orbit.
Industrially, ferrous sulfate is mainly used as a precursor to other iron compounds. It is a reducing agent, and as such is useful for the reduction of chromate in cement to less toxic Cr(III) compounds. Historically ferrous sulfate was used in the textile industry for centuries as a dye fixative.
Therapeutically there is no difference between ferrous sulfate and ferrous gluconate as both forms of irons are prescribed for the treatment of anemia. There is slight difference between these two as ferrous sulfate is inorganic supplement and ferrous gluconate is organic supplement. The rate of absorption of organic supplements is more in comparison with inorganic supplements so large amount of ferrous sulfate is required to get desired effects.