You purchase a bucket of 100 radioactive particles. Initially there are 100 of isotope A with a half-life of 5.0 minutes, which decay into a second stable isotope B. On average how long will you have to wait until there are 75 particles of isotope B

Use the periodic table to complete this equation that represents nuclear fission processesun - ba c 3 n

An object displaces 652 ml of water. the volume of the object is: 0.652 cm³ 6.52 cm³ 65.2 cm³ 652 cm³

Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen prepared by reforming natural gas. in the first step, nitrogen and hydrogen react to form ammonia: (g) (g) (g) in the second step, ammonia and oxygen react to form nitric acid and water: (g) (g) (g) (g) calculate the net change in enthalpy for the formation of one mole of nitric acid from nitrogen, hydrogen and oxygen from these reactions. round your answer to the nearest .