Question 2: Nuclear energy (30 points) a) If 1.8 × 1014 J is released in a nuclear reaction, how much matter was lost?
Homework 14 Due: 11:00 am on Wednesday, Dec. 14th in class (100 points)
Question 1: Nuclear equation (40 points) a) Write a nuclear equation for the beta decay of thallium-210. b) Plutonium-239, a toxic isotope that cause lung cancer, is an alpha emitter. Write nuclear equation. c) Write the nuclear equation for the alpha decay of Po-210. d) Write the nuclear equation for U-235 fissions to form Ba-138, Kr-95 and neutrons.
Name: Lab Section:
Question 2: Nuclear energy (30 points) a) If 1.8 × 1014 J is released in a nuclear reaction, how much matter was lost?
E = mc2 or ΔE = Δmc2 c: 3.0 x 108m/s 1J = 1kg·m2/s2 b) If this much energy was released from the combustion of coal, the heat of combustion of coal is 29 kJ/g. How many grams of coal would be consumed?
Question 3: The Half-life of radioactive decay (30 points) a) If you have 222 g of radioisotope with a half-life of 5 days, how much isotope would remain after 15 days? b) What percentage of a radioactive isotope would remain after four half-lives?
