>Publishers: Danitees Printing and Publishing Ltd. For quite a long time now, there has been an urgent need for the improvement in the teaching and learning of CHEMISTRY at the Senior Secondary School ...

Celebrated annually on October 23 from 6:02 a.m. to 6:02 p.m., Mole Day commemorates "Avogadro's Number": 6.02 x 10 23. This number--called a mole--is a basic measuring unit in chemistry. Mole Day ...