Barium-142 is used as a gi radiocontrast agent. after 1.25 hours, 9.25 μg remains in the patient. determine the original dose given the half-life of ba-142 is 10.6 minutes.

the answer is about 1184 or 1180

Acurium-245 nucleus is hit with a neutron and changes as shown by the equation. complete the equation by filling in the missing parts. 52

Which is a chemical property of iron? a. it forms iron oxide (rust) when exposed to moisture and air. b. it is a gray–black metal that is hard to the touch. c. it has a melting point of 2795°f (1536°c). d. it is a good conductor of heat

Take a look at this dandelion. the yellow flower on the right is pollinated and the seeds on the left are transported by