Chemistry Toolbox

Calculate Molar Mass

Balance Equation

Calculate limiting reactant

Balance an equation first to use this feature!

About

This is a simple toolbox with a number of useful tools for high school chemistry courses. The first tool determines the molar mass of a compound, given its formula. Formulas should be entered using element names followed by their coefficient. If a coefficient is not given, it is assumed to be 1. For example: H or H2O. Polyatomic ions can be grouped with parenthesis: Cr2(SO4)3.

The second tool is a chemical equation balancer. Equations are entered as a number of compounds separated by plus signs, with the two halves of the equation separated by ->. For example: CO2 + H2O -> H2CO3 or KI + KClO3 + HCl -> I2 + H2O + KCl. The balancer is not able to solve equations that have more than one possible solution.

The final tool allows you to find the limiting reactant of a reaction. To use this tool, you will need to first balance an equation. After balancing an equation, a table will be created. In this table, you can enter the amount of each reactant (in moles or grams). Once all reactants are entered, the row for the limiting reactant will be highlighted in red and the expected products will be shown.