A Geiger counter detects 300 counts per minute when a sample of neon-19 is place under it. Based on Reference Table N, how long will it take for Geiger counter to drop to 75 counts per minute?

A Geiger counter detects 300 counts per minute when a sample of neon19 is place under it Based on Reference Table N how long will it take for Geiger counter to class=


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