Given a solution containing 0.010 M CaCl2 and 0.020 M MgCl2, what is the activity of Cl-? A. 0.060 B. 0.046 C. 0.76 D. 0.12

Q: How long will it take for 1.800 mg of promethium-144 to decay to 0.1125 mg? The half-life is 17.5…

A: we have to calculate the time taken for 1.800 g promethium to decay to 0.1125 g

Q: The half-life of the radioactive isotope 137Cs is 30.17 years. How long does one have to wait until…

A: To solve this problem we have to first calculate the rate constant of the reaction using half life…

Q: Americium-241 is widely used in smoke detectors. Calculate the amount of americium-241 consumed in a…

A:

Q: 120 mg sample of technium 99m is used for a diagnostic test. if a technium 99m has a half-life of…

A: Given- Initial mass = 120 mg Half life = 6.0 hrs To find- milligrams of the technetium 99M sample…

Q: Use the References to access important values if needed for this question. Iron-59 is a radioisotope…

A:

Q: 1. The half-life. of a radioactive isotope a) displays 1st order kinetics b) is independent of the…

A: Characteristics of Radioactive materials

Q: 3. The isotope 212Bi has a half-life of 1.01 yr. What mass, in mg, of a 2.00 mg sample will remain…

A: t(1/2) = 1.01 yrA0 = 2.00 mgt = 3.75*103 hr

Q: NUCLEAR REACTIONS Zinc-62 decays with a half-life of 9.186 hours. 1. Write the balanced nuclear…

A: Answer: All nuclear reactions are first order reaction therefore integrated rate law of first order…

Q: If the amount of radioactive sodium-24, used for studies of electrolytes within the body, in a…

A: Given information:Initial concentration = 1.6 mgFinal concentration = 0.2 mgTime = 45.0 hours

Q: The half-life of Pxygen-15 is 2 minutes. What fraction of the sample will remain after 10 minutes…

A:

Q: What is the half-life of a sample if after 40 years 12.5g of an original 0.4kg sample is left?

A: Given that,  Initial mass of sample = 0.4 kg = 400 g  Mass of sample left after after 40 years =…

Q: A feldspar crystal in granite was analyzed for Potassium-40 and Argon-40. Measurements showed that…

A: From graph it is clear that:  The sample is decaying into half in 1.5 Billion years.  So,      the…

Q: A 0.20 mL sample a saline solution containing 59Fe is injected into the animal. Before the injection…

A:

Q: Br (aq) -121.6 (a) Calculate the enthalpy of dissolution for KBr(s) from the data. The lattice…

A:

Q: What is the half-life of polonium-210 if it takes 828 days for a 100.0 g sample to be reduced to 1.6…

A: Polonium-210 is a radioactive element so it's decay is followed first order kinetics.

Q: 1.A vial of 133Xe gas is calibrated at 22 MCI at 6 a.m. on March 1st what is its activity at 6 p.m.…

A: Answer: Given data- 51 Cr sodium chromate standard solution contain 15 uCi/ ml when it was produced.…

Q: er Community College + 6KNO; How mony 3 of are product If 19. 95 NNG), reacts

A: Molar mass of Ni(NO3)3 = 182.703 g / mol Molar mass of Ni2(SO4)3 = 405.575 g / mol

Q: One of the challenges of nuclear technology is safe long-term storage of by-products and waste. How…

A: It is given that; Half -life = 2.4×10-4 years Initial amount of sample = 100 After time t sample…

Q: 12. A radioactive substance has a half-life of 24 years. If you begin with a 1000 g sample, how much…

A: Since you have posted multiple questions, we will provide the solution only to the first question as…

Q: What do you mean by Q-value of s the nuclear reaction? Explain significance of a positive and a…

A:

Q: Vhich of the following is the half-life ( in days Jof a radioisotope if it decays to 10.5% of its…

A:

Q: After 100 years, 1/32 of the original amount of a substance remains. What is the substances half…

A: The half-life of a radioactive substance is the amount of time it takes for one-half of the…

Q: Element X has a half-life of 6 hours. How much of X remains from a 64kg sample after one day?

A:

Q: The half-life for Americium-241 is ______432 years__________. ? A smoke detector requires about 0.3…

A: As per guidelines we are allowed to answer one question but first question answer is very small , so…

Q: Calculate the mass (in µg) of 239Pu

A:

Q: QUESTION 15 The half-life of the first order radioactive decay of K is 1.30 x 10 9 years. How long…

A:

Q: The activity of hydroxide ion [OH"] concentration in solution containing 0.1 M KCI is:…

A: KCl is salt of strong acid and strong base. Hence its concentration effect will not interfere with…

Q: 8. A radioisotope is going to be used in an experiment. At the end of 10 days, only 5% is to be…

A:

Q: A sample to be used for medical imaging 18f, which has a half-life of is labeled with 110 min. what…

A: