A radioactive substance decays at a rate of 8% per year. If the initial mass is 200 grams, what will be the mass after 5 years?

Sun, 03 May 2026 10:40:43 +0000

**Why Radioactive Decay Matters—And How 200 Grams Becomes Less Over Time** Have you ever wondered how long a substance truly lasts when it loses mass slowly, safely, and predictably? A radioactive substance decaying at 8% per year might sound like an abstract concept, but it’s a real and studied phenomenon shaping science, medicine, and even environmental monitoring. Curious about what happens to 200 grams over five years? This isn’t just a math problem—it’s a window into the steady, measurable rhythm of nature’s invisible processes. --- ### The Growing Conversation Around Radioactive Decay in the U.S.