Category

Chemistry Calculators.

Two chemistry calculators. General Chemistry holds an atom calculator that returns protons, neutrons and electrons for any element or ion from its atomic number and mass number, including how the electron count changes with charge. Stoichiometry holds a limiting reactant calculator that takes reactant amounts and a balanced equation, identifies which reactant runs out first, and reports both the theoretical yield and how much of the excess reactant is left over at the end. Both pages work an example through step by step, because the arithmetic itself is short and the part people get wrong is deciding which quantity to divide by.