Balancing, molar mass and mass composition — moles.cheminfo.org

moles.cheminfo.org — balancing and mass compositionBalance a reaction, and work out the mass composition of a compound in percent and in grams, each with a calculator and a graded series of questions. The tools need JavaScript, because the chemistry runs in your browser.

Balance — the smallest whole coefficients

Mass % — each element’s share of the molar mass

Mass in g — the mass percent times the sample

Cheatsheet — the rules on one printable page

About — what it is built on, and how to cite it

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