Oxi có 3 đồng vị là 816O, 817O, 818O. Cacbon có 2 đồng vị là 612C, 613C. Số loại phân tử khí CO2 có thể tạo thành là:

Answerstudying coal cumbustion as an energy source;

The higher the temperature, the increased rate constant for a reaction.(positive linear association)

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.