Jim Clark’s Calculations in AS/A Level Chemistry features a graduated solution system, providing full worked solutions for end-of-section problems while offering only final answers for chapter reviews, creating a guided learning experience. The text is noted for its accessible, conversational tone,, designed to build confidence in chemical calculations by removing assumptions about prior mathematical ability. For more information, visit Understanding Chemistry - About this site - Chemguide
This is the foundation. Clark breaks down the relationship between mass, molar mass, and moles ( Jim Clark Chemistry Calculations.pdf
One of the most requested sections. The PDF walks you through the "percentage to mass, mass to mole, divide by smallest" method to find empirical formulas (e.g., determining that a compound is $CH_2O$). It then explains how to scale that up to the molecular formula using the relative molecular mass. Jim Clark’s Calculations in AS/A Level Chemistry features