1.to power itself, the sun is constantly generating a nuclear reaction in its core, in which hydrogen nuclei are combined to form helium. this process is known as

group of answer choices
fission

solar flaring

radiance

fusion
2.this occurs when some atomic nuclei decay spontaneously or when they are bombarded by neutrons and results in nuclear waste.
fusion

anions

cations

fission
3.this occurs when low mass nuclei, such as hydrogen, collide and combine to form nuclei with greater mass; this occurs in the sun and is one of the most energetic processes in the universe.
aniona

nuclear fission

cations

nuclear fusion
4.this is the emission of energy as electromagnetic waves or as moving particles. sometimes, very massive elements have unstable nuclei, causing them to decay into less massive elements.

group of answer choices
radiation

chemical energy

kinetic energy

sound
5.starting with 100 grams of uranium-238, after one half life has gone by, how many grams of uranium-238 will remain?

group of answer choices
12.5 g

100 g

25 g

50 g
6.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.

group of answer choices
64.8 μg

259 μg

1,180 μg

592 μg