An ideal gas with an initial volume of 4.07 L is cooled at constant pressure to 25.0°C where its final volume is 3.41 L. What
was the temperature initially (in degrees Celsius)?

Radioactive fallout is a result of the fission creation used to ignite the thermonuclear fusion reaction.

Radon-222 or rn-222 has a half-life of 3.82 days. to determine the fraction of an original sample of rn-222 that remains unchanged after 7.646 days, we calculate the amount of rn-222 remaining after 7.646 days and divide it with the original amount. using 1 gram as a basis and using half-life calculation methods, we can determine that  0.249 or 0.25  grams of rn-222 will remain, and thus the fraction remaining is 0.25 or 1/4.

Where is the illustration?