Calculate the remaining quantity of a substance based on its half-life and elapsed time.
Remaining Quantity:
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About Half-Life

Half-life is the time it takes for a substance to reduce to half of its initial quantity. It's widely used in chemistry, physics, and pharmacology.

How This Calculator Works

The formula used: Remaining = Initial × (1/2)^(Time / Half-life). You provide the initial amount, half-life, and elapsed time to calculate the remaining substance.

Practical Applications

Used for radioactive decay, medication dosage, chemical reactions, and biological processes to determine how much substance remains over time.

Advice

Ensure units for half-life and time elapsed are consistent. Double-check your inputs for accurate calculations.

FAQs

Can I use this for any substance? Yes, as long as the substance decays exponentially.
What if time is longer than half-life? The formula still works for multiple half-life periods.
Are decimals allowed? Yes, fractional quantities are supported.