Lymph nodes are very small clusters of immune cells that function as part of the bodyâs immune system. There are more than 600 lymph nodes throughout the body, but the ones most frequently enlarged or swollen are the lymph nodes in the neck, under the chin, in the armpits, and in the groin.here are more than 600 lymph nodes throughout the body, but the ones most frequently enlarged or swollen are the lymph nodes in the neck, under the chin, in the armpits, and in the groin.
Uses of sulfuric acid. By far the largest amount of sulfuric acid is used to make phosphoric acid, used, in turn, to make the phosphate fertilizers, calcium dihydrogenphosphate and the ammonium phosphates. It is also used to make ammonium sulfate, which is a particularly important fertilizer in sulfur-deficient.
Most of the sulphur produced is used to produce sulphuric acid, H2SO4, the most important manufactured chemical in the world. Sulphuric acid has many uses, including for the synthesis of fertilisers and polyamides. It is used in batteries (battery acid). Sulphur is a component of black gunpowder (a mixture of potassium nitrate, KNO3, carbon, and sulhur). It is used in the vulcanisation of natural rubber, as a fungicide, and as a fumigant. Sulphur compounds are used in the bleaching of dried fruits and for paper products.