Mercury-197 is used for kidney scans and has a half-life of 3 days. If the 32 grams of mercury-197 is ordered, but takes 15 days to arrive, how much would arrive in the shipment?
Describe how alpha (a), beta (B), and gamma (V) rays each behave when they pass through an electric field. Do they bend toward the positive plate, away from the positive plate or are they unaffected?
In the nuclear equation, 238/92 U →> A/Z X + 4/2 He, the letters Z and A are, respectively
a. 90 and 242
b. 94 and 242
c. 94 and 234
d. 90 and 234
18. What kind of decay is described in question above?
Alpha
Gamma
Beta
Positron
To determine the amount of mercury-197 that would arrive in the shipment after 15 days, we can use the concept of half-life. Since the half-life of mercury-197 is 3 days, after 15 days (5 half-lives), the amount of mercury-197 that would arrive in the shipment would be:
32 grams * (1/2)^5 = 32 grams * (1/32) = 1 gram
Therefore, only 1 gram of mercury-197 would arrive in the shipment.
When alpha rays pass through an electric field, they are unaffected as they have a larger mass and charge compared to beta and gamma rays. Beta rays bend towards the positive plate in an electric field as they are negatively charged particles. Gamma rays, being neutral electromagnetic radiation, are unaffected by the electric field.
In the nuclear equation 238/92 U → A/Z X + 4/2 He, the letters Z and A are, respectively:
c. 94 and 234
The kind of decay described in the question above is alpha decay. In alpha decay, an atomic nucleus emits an alpha particle, consisting of 2 protons and 2 neutrons, to form a new element.