Hidayah

Popular questions and responses by Hidayah
  1. Chemistry

    A sample of 1.55g of iron ore is dissolved in a acid solution in which the iron is converted into Fe2+. The solution formed is then titrated with KMnO4 which oxidises Fe2+ to Fe3+ while the MnO4- ions are reduced to Mn2+ ions. 92.95 mL of 0.020M KMnO4 is

    asked on June 9, 2018
  2. archeology

    I have a number of questions.Please answer as many as possible according to your expertise. 1.I have seen for sale fossils of ginger and garlic in an antiquity shop.They look like ginger/garlic but is rock hard. The price is about $8 each,which seems to be

    asked on August 21, 2010