https://github.com/kongnet/chem

Chemical Equation Balancing
https://github.com/kongnet/chem

balance chem chemical equation

Last synced: 7 months ago
JSON representation

Chemical Equation Balancing

• Host: GitHub
• URL: https://github.com/kongnet/chem
• Owner: kongnet
• Created: 2019-09-05T03:58:07.000Z (almost 6 years ago)
• Default Branch: master
• Last Pushed: 2024-09-08T12:52:03.000Z (10 months ago)
• Last Synced: 2024-11-13T00:48:37.597Z (8 months ago)
• Topics: balance, chem, chemical, equation
• Language: JavaScript
• Size: 571 KB
• Stars: 21
• Watchers: 2
• Forks: 4
• Open Issues: 8
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md

Awesome Lists containing this project

README

        
# Sky chem

![chemLogo](https://github.com/kongnet/chem/raw/master/screenShot/chem_test.png)

A friend's kid is going to high school. I wrote a **Chemical Equation Balancing** code for him.

## Install

    npm i chem-eb

## Test

    npm test

## Use

```javascript

// equation use ->, =, - as split string

let balanceEq = require('chem-eb')

console.log(balanceEq('P+O2=P2O5')) // 4P + 5O2 = 2P2O5

// over-determined equation 会用到超定方程求解

console.log(balanceEq('Fe2S3O12+NaOH=Na2SO4+FeO3H3')) // Fe2S3O12 + 6NaOH = 3Na2SO4 + 2FeO3H3

console.log(balanceEq('Ca + NO3 -> Ca(NO3)2')) //  Ca + 2NO3 = Ca(NO3)2

console.log(balanceEq('Fe + Cl -> FeCl3')) // Fe + 3Cl = FeCl3

console.log(balanceEq('Ca(No3)2 + K3PO4 = Ca3(PO4)2 + KNo3')) //3Ca(No3)2 + 2K3PO4 = Ca3(PO4)2 + 6KNo3

console.log(

  balanceEq('K2Cr2O7 + H2SO4 + C2H5OH -> K2SO4 + Cr2(SO4)3 + H2O + CH3COOH') //2K2Cr2O7 + 8H2SO4 + 3C2H5OH = 2K2SO4 + 2Cr2(SO4)3 + 11H2O + 3CH3COOH

)

```

## NOTICE:

~~when (OH)2 pls O2H2 input~~

## TODO:

- ~~over-determined equation~~

- ~~Chemical functional groups unfold~~