Acontainer of carbon dioxide (co2) has an initial temperature of 170 k with a pressure of 50 kpa. when the container is heated the pressure is measured at 283 kpa. the volume is constant at 12 l throughout. what is the final temperature of the carbon dioxide (co2)?

Ithink is d. physical property

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.