Rate of Disappearance Calculator
function calculateRate() {
var initial = parseFloat(document.getElementById('initialConc').value);
var final = parseFloat(document.getElementById('finalConc').value);
var time = parseFloat(document.getElementById('deltaTime').value);
var unit = document.getElementById('timeUnit').value;
var resultArea = document.getElementById('resultArea');
var rateDisplay = document.getElementById('rateValue');
var formulaDisplay = document.getElementById('formulaStep');
if (isNaN(initial) || isNaN(final) || isNaN(time)) {
alert("Please enter valid numerical values for all fields.");
return;
}
if (time Final in disappearance
var deltaConc = initial – final;
var rate = deltaConc / time;
resultArea.style.display = 'block';
// Formatting the rate
var formattedRate = rate.toExponential ? (rate < 0.001 ? rate.toExponential(4) : rate.toFixed(6)) : rate;
rateDisplay.innerHTML = formattedRate + " M/" + unit;
formulaDisplay.innerHTML = "Calculation breakdown:" +
"Δ[A] = " + initial + " – " + final + " = " + deltaConc.toFixed(4) + " M" +
"Rate = " + deltaConc.toFixed(4) + " M / " + time + " " + unit + " = " + formattedRate + " M/" + unit;
// Scroll to result for mobile users
resultArea.scrollIntoView({ behavior: 'smooth', block: 'nearest' });
}