The decay of antimony-131 is first order. What is the value of the rate constant (in 1/min) if the half life is 22.90 minutes?
The decay of antimony-131 is first order. What is the value of the rate constant (in...
The decay of antimony-131 is first order with a half life is 23.03 minutes. How long (in minutes) would it take for a 1.4100 g sample to be reduced to 0.0893 g?
The decay of antimony-131 is first order with a half life is 23.03 minutes. How much of 1.4228 g sample would remain after 1.368 hours?
1. For a first order decay of [A], if 525 mg remains of an initial sample of 1.3079 g after 361 min, what is the half life (in minutes)? 2. The decay of antimony-131 is first order with a half life is 23.03 minutes. How much of 1.4228 g sample would remain after 1.368 hours? 3. The decay of antimony-131 is first order with a half life is 23.03 minutes. How long (in minutes) would it take for a 0.8893...
4. The decay of the radioisotope 1-131 was studied in a laboratory. The data collected are plotted on the graph below. Disintegration Rate (decays per minute) 16,000 14.000 12.000 10,000 8.000 2.000 20 24 8 12 16 Time (days) a. Determine the half-life, t12, of l-131 using the graph above. b. The data can be used to show that the decay of l-131 is a first-order reaction, as indicated on the graph below. 8 12 16 20 24 Time (days)...
(b) [5 marks] Using first principles, derive the radioactive decay rate for nuclei whose decay constant is ?. Here R,-??, is the rate of decay at t-0 [5 marks] A count-rate meter is used to measure the activity of a given sample. At one instance it shows 4750 counts per minute (cpm). Five minutes later it shows 2700 cpm. Find the decay constant and the half-life of the sample. (c) (d) [5 Marks] For alpha decay, show that 13 markel...
Iodine-131 is used in medical images for CT scans with contrast. Iodine-131 decay is first order with a half-life of 8.0 days. If a patient is administered a typical dose of 370 mg Iodine, how much Iodine-131 will remain after 24.0 days?
a)For a first order decay of [A], if 188 mg remains of an initial sample of 1.3737 g after 516 min, what is the half life (in minutes)? b)The decay of carbon-14 is first order with a half life is 5576 years. How much of 1.4376 g sample would remain after 9190 years? c)The decay of cesium-135 is first order with a half life is 3.0 million years. How long (in years) would it take for a 0.9798 g sample...
help The thermal decomposition of NOCl is a second-order process, and the rate constant k for the disappearance of NOCI at 160 °C is 0.0037 Msl. What is the concentration of NOCI, initially at 0.043 M, after 20.0 minutes at 160 °C? (A) 0.00051 M (B) 0.036 M (C) 0.040 M (D) 0.042 M Bismuth-212 undergoes both a decay (35.9%) and B decay (64.1%) with an overall half-life of 60.6 minutes. What is its half-life for a decay? (A) 21.8...
QUESTION ANSWER 12.2 minutes Nuclear decay occurs according to first-order kineties. What is the half-life for mercury-206, which has a rate constant of 8.50 10 minutes? 5.89 minutes 11.8 minutes 8.15 minutes I DON'T KNOW YET
lodine 131 has a half life of 8 days and decays by a first order process (as is always the case for radioactive decay). How much of a 46 gram sample of iodine 131 will remain after 8 days? Report your answer in grams.