Buy Online at low price from Helmet Don-Modern Approach to Chemical Calculations by R.C. Mukerjee Publisher: Bharati Bhawan Publishers & Distributors; Seventh edition (2004) ISBN-13: 978-8177096415 Language: English Paperback: 872 pagesThis book introduces the mole concept as a tool for solving numerical problems in chemistry. All problems are solved using a set of clearly defined rules. The book covers all topics required at the +2 level and for various entrance examinations.