chemical equation balancer

Application description: This equation balancer can help middle school, high school or college students balance chemical equations. The chemical element keyboard is simple and intuitive. Chemical equations can be entered by selecting chemical elements from the corresponding tab bar. Click the button "Balance chemical Equation" to view the chemical equation balance results in the text box. The application will display the balance coefficients as output in a text box along with the chemical equation you entered. Instructions for use: When using this app, please enter a chemical equation without coefficients. Elements are arranged under four labels based on atomic number. Currently only 48 elements are provided. In addition to elements and subscripts, you can also enter brackets, "+", and "→" to construct the chemical equation you want to balance. Click the "Balance" button and the application will output the chemical equation with the balance coefficients. Features: - Uses the first 108 elements of the periodic table; - Highlights the balanced chemical equation coefficients; - Recommends a set of valid solutions when there are multiple balancing results (for example: for algorithms, the coefficient equation Groups have multiple degrees of freedom); - Poka-proof! Will attempt to capture chemical equations that cannot be balanced (for example, an element is present in the reactants but not in the products). This application will catch such exceptions and give exception information. Limitations: Please note that this application software has some settings or limitations: 1) Set the balance coefficient to a positive integer; 2) The ionic form cannot be entered; 3) Some chemical equations may not be balanced (for example: an element appears in in the reactants but not in the products). This application will capture such exceptions and give exception information; 4) Some chemical equations will have multiple balancing results from a mathematical point of view (for example: degree of freedom problem), this application attempts to give one of them Group balancing results instead of listing all possible results; 5) When some problems cannot be solved from a mathematical perspective, the corresponding error message will be displayed instead of the application directly crashing or infinite loop. Possible error scenarios: 1) The number of brackets entered is incorrect; 2) The reactant or product has a coefficient before balancing; 3) Invalid character input; 4) The reactant or product has two consecutive lowercase letters; 5 ) The reactants and products do not match; 6) The algorithm does not support it.