curl --request POST \
  --url https://api.iotools.cloud/v1/tool/limiting-reactant-calculator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "equation": "H2 + O2 -> H2O",
  "amounts": "10, 64",
  "unit": "g",
  "actualYield": "65",
  "yieldProduct": "1"
}
'

{
  "tool": "limiting-reactant-calculator",
  "tool_version": "1.0.2",
  "outputs": {
    "balancedEquation": "2H2 + O2 → 2H2O",
    "limitingReactant": "O2",
    "reactantTable": [
      {
        "reactant": "H2",
        "coef": "2",
        "molar-mass-g-mol": "2.016",
        "moles-given": "4.96032",
        "moles-coef": "2.48016",
        "status": "Excess",
        "left-over-mol": "0.960067",
        "left-over-g": "1.9355"
      },
      {
        "reactant": "O2",
        "coef": "1",
        "molar-mass-g-mol": "31.998",
        "moles-given": "2.00013",
        "moles-coef": "2.00013",
        "status": "Limiting",
        "left-over-mol": "0",
        "left-over-g": "0"
      }
    ],
    "productTable": [
      {
        "product": "H2O",
        "coef": "2",
        "molar-mass-g-mol": "18.015",
        "yield-mol": "4.00025",
        "yield-g": "72.0645"
      }
    ],
    "percentYield": "90.197% of H2O (65 g of 72.0645 g)",
    "steps": "1. Balance: 2H2 + O2 → 2H2O (coefficients recalculated)\n2. Convert each reactant to moles and divide by its coefficient:\n   H2: 10 g ÷ 2.016 g/mol = 4.96032 mol ÷ 2 = 2.48016\n   O2: 64 g ÷ 31.998 g/mol = 2.00013 mol ÷ 1 = 2.00013\n3. Smallest ratio → O2 is limiting (reaction extent 2.00013 mol).\n4. Theoretical yield = extent × product coefficient × molar mass:\n   H2O: 2.00013 × 2 × 18.015 = 72.0645 g"
  },
  "credits_used": 5,
  "credits_remaining": null
}