Jim Clark periodically updates pages. Look for "Latest update: [Year]" at the top right of each page. Focus on pages updated 2020–2025.
Jim Clark’s Chemguide is a well-known free resource for A-level and IB chemistry. His sections on calculations cover core quantitative chemistry topics. While an official “Jim Clark Chemistry Calculations PDF” may not exist as a single updated book, his website pages can be compiled or printed to PDF. Below is a structured summary of the essential calculations he explains.
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Using balanced equations to find unknown masses.
Alex reached a river labelled “Concentration”. Jim Clark’s note said: Jim Clark periodically updates pages
Concentration (mol/dm³) = moles / volume (dm³)
A bottle read: “0.2 mol/dm³ HCl, 250 cm³.” How many moles? Do not host publicly without clear attribution and
Lesson: c = n / V
Chemistry calculations are a fundamental part of understanding and working in chemistry. They range from simple conversions between units to complex stoichiometric calculations and equilibrium constant determinations. Here are some common types of calculations you might encounter: