Chemistry
Chemistry guides,
grams to moles and back.
Almost every quantitative chemistry question is one journey: grams to moles, across the balanced equation, then back to grams. These guides make that route explicit.
Guides
How to Balance Chemical Equations
Balance in a fixed order instead of guessing: metals, then other elements, then hydrogen, then oxygen. Three worked examples including combustion, plus practice.
How to Calculate Molar Mass
Add the atomic masses, multiplied by how many of each atom the formula contains. Worked examples for a simple compound, one with brackets, and a hydrate.
What this covers
- Balancing equations in a fixed order that always works
- Molar mass from the periodic table
- Why the units have to cancel, and what it means when they do not
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