Magnesium hydrogen phosphate.heptahydrate

Dipotassium hydrogen phosphate trihydrate (15.9 g) potassium dihydrogen phosphate (4.0 g) disodium hydrogen phosphate dodecahydrate (7 g) ammonium sulfate (1.2 g) ammonium chloride (0.2 g) magnesium sulfate heptahydrate (1 g) yeast extract (5 g )... 

The chemicals used in this study were sodium chloride, magnesium chloride, calcium chloride, potassium chloride, trichloroacetic acid (TCA), trifluoroacetic acid, a-d glucose, sodium citrate dihydrate, sodium hydrogen phosphate, hydrochloric acid, and iron (11) sulfote heptahydrate. These chemicals were purchased from Sigma (St. Louis, MO, USA). The HPLC grade solvent, acetonitrile was fivm J. T. Baker (Philipsburg NJ, USA). Water was distilled and deionized prior to use. 

The composition of the fungal medium used for the transformation studies was, sucrose(1.50 gm), glucose(1.50 gm), polypeptone(0.50 gm), dipotassium hydrogen phosphate(0.10 gm), magnesium sulfate(Q.50 gm), potassium chloride(0.50 gm) and ferrous sulfate heptahydrate(0.001 gm) in 100 ml of distilled water. 

Write formulas for magnesium sulfate heptahydrate and disodium hydrogen phosphate dodecahydrate. 

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