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: A medical technician is working with the four samples of radionuclides listed in the table below.…

A: The time take for the amount of radionuclide in each sample to decrease to 1/16 of the initial…

Q: How old in years is a bottle of a solution if the deuterium 2H content is 67% that of a new wine?…

A:

Q: The half life of 15O is 122 seconds. If you start with a sample of 400g how long will it take to end…

A: Radioactive decay follows first-order kinetics. Hence, the integrated rate law for the radioactive…

Q: If we start with 1.000 g of strontium-90, 0.953 g will remain after 2.00 yr. (a) What is the…

A: Integrated rate equation for radioactive decay: k = 2.303tlog1.0000.953 k  = 2.3032.00 yr×0.0209  k…

Q: Given a solution containing 0.010 M CaCl2 and O.020 M MgCl2, what is the activity of Ca2+? O 0.0034…

A: Given: Concentration of CaCl2 = 0.010 M And concentration of MgCl2 = 0.020 M

Q: How old in years is a bottle of a solution if the deuterium 2H content is 67% that of a new wine?…

A:

Q: How long will it take 70 grams of cobalt-60 to decay to 17.5 grams

A: Given: Initial amount=70 g Final amount=17.5 g Half life=5.3 years Formula used: t12=ln 2r A=A0ert

Q: Calculate the mass of sodium-24 that will remain in a 20.0 g sample after 75 hours. Sodium has a…

A: Chemical kinetics is branch of chemistry in which we deal with the speed at which rate of reaction…

Q: The half-life of 223Ra is 11.4 days. How much of a 200.0 mg sample remains after 600 hours?

A:

Q: About what percentage of the original radioactive sample will be left after 8 minutes? The half-life…

A: Given,  Time = t = 8 8 minutes Half-life period = t1/2 = 2 minutes Percentage of the original…

Q: How long will it take 70 grams of cobalt-60 to decay to 17.5 grams? The half-life of cobalt-60 is…

A:

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

A:

Q: How old in years is a bottle of a solution if the deuterium 2H content is 67% that of a new wine?…

A: Intial amount of deuterium = 100  Final amount of deuterium = 67  Half-life of deuterium = 1 century…

Q: A current 1.00-g sample of carbon shows 921 disintegrations per hour. If 1.00 g of charcoal from an…

A: Given the initial activity of C-14, Ao = 921 disintegration/hour or 921 dph Current activity of the…

Q: Given a solution containing 0.010 M CaCl2 and 0.020 M MgCl2, what is the activity of Ca2+?

A: Activity of ion is expressed  by the effective  concentration  of ion. In the solution CaCl2 and…

Q: The half-life of sodium-24 is 15 hr. If a sample initially contains 40. g of sodium-24, how much…

A: Radioactive reactions are First order reactions. Half life of Sodium-24 is 15 hr. Initial…

Q: The radioisotope phosphorus-32 is used in tracers for measuning phosphorus uptake by plants. The…

A:

Q: If we start with 2.000 g of strontium-90,  1.906 g  will remain after  2.00 years. (a)   What is…

A: We know that,  →Radioactivity phenomena follow first owen kineticsso, Rate=K A1 K→Rate constant By…

Q: A sample of , a ß- emitter, has an activity of 0.100 µCi. In 20.0 days, the activity of the sample…

A:

Q: Cobalt 60 is a γ emitter with a half-life of 5.27 years and a γ energy of 1.3 MeV. What is the…

A: Given :  Half-life of Cobalt 60 = 5.27 years γ energy = 1.3 MeV wavelength of the γ rays = ?

Q: Radium decomposes at a rate proportional to the amount at any instant. In 100 years, 100 mg of…

A: Radium (Ra) is an element that belongs to group 2 of the periodic table and lies in the sixth…

Q: The specific activity of a wood article found in the Lascaux Caves in France is 0.0375 Bq g-1 due to…

A: The activity of wood article due to 14C is 0.0375 Bq/g. The half-life of 14C is 5730 years. The…

Q: What is the binding energy in kJ/mol Br for bromine-81? kJ/mol 35 H+ 46;n-Br 81 The required masses…

A: Given- Binding energy of Bromine-81=? 3511H + 4601n ->3581Br

Q: If we start with 1.000 g of strontium-90, 0.953 g will remain after 2.00 yr. (a) What is the…

A: As we know, that Radio active decay follows first order kinetics. Rate constant for first order…

Q: half-life

A:

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

A: Given data: Radio active sodium -24 used in the studies of electrolytes within the body. Initial…

Q: 1. If gallium – 68 has a half-life of 68.3 minutes, how much of a 160.0 mg sample is left after 1…

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: The half-life of technetium-99 is 6.0 hours. How much of a 50.0 mg sample will remain after 24…

A: Given,  Half-life period of technetium-99 = t1/2 = 6.0 hours  Initial concentration = N0 = 50.0 mg…

Q: How long does it take for a sample of 27?? 60 to disintegrate to the extent that only 2.0% of the…

A:

Q: half-life of a radioactive substance is 10 days and there are 10 grams initially. What is the…

A:

Q: If 32 g of such substance, the remaining amount be after 4 half-life is --- g 8. 16 O 2

A: Radioactivity Decay is a process in which an unstable nuclei looses energy by radiation. A material…

Q: How old in years is a bottle of a solution if the deuterium 2H content is 67% that of a new wine?…

A: Radioactive decay follow first order kinectics    Half life = 100 years

Q: How old in years is a bottle of a solution if the deuterium 2H content is 67% that of a new wine?…

A: The age of wine is calculated using the formula. λ = (2.303/t) log (No/N). λ = 0.693 / T50. (0.693 /…

Q: How old in years is a bottle of a solution if the deuterium 2H content is 67% that of a new wine?…

A: Given data: t1/2=100 years , No= 100% , N=67%

Q: Carbon extracted from an ancient skull combined only one-sixth as much as C14 as carbon extracted…

A:

Q: A certain radioactive substance has a half life of 50 hours that is half of the original quality has…

A:

Q: The half-life of 199Tc, a ߯ emitter, is 15.8 s. (a) How many atoms of 199Tc are present in a sample…

A:

Q: 2. Strontium-90 is a dangerous by product of automatic testing because it mimics the action of…

A: In a beta particle emission the particle which is given off is an electron with the symbol e-10. If…

Q: A  105.0 nanogram (ng)  sample of sodium−24 was stored in a lead-lined cabinet for 2.5 d.  How…

A:

Q: The decay constant of 235U is 9.8 × 10^−10 y^−1. How many 235U atoms will remain in a 1.0 µg sample…

A: Given,

Q: ( in Hours) will it take to disintegrate 3.17 x1017 atoms from a 12.0 mCi ( millicuri

A: One of the common unit in which the rate of disintegration is expressed is Curie.1…

Q: a 102.0 nanogram(ng) sample of sodium-24 was stored in a lead-lined cabinet for 2.5 days How much…

A: Radioactive decay is a first order reaction. Conversion of days into hours: 1 day=24 hrs2.5…

Q: How old in years is a bottle of a solution if the deuterium 2H content is 67% that of a new wine?…

A: The age of wine can be calculated using the formula. λ = (2.303/t) log (No/N). λ = 0.693 /T50…

Q: For the formation of silver-107 through electron capture, the silver is placed in the reactant side…

A: For the formation of silver-107 through electron capture, the silver is placed in the reactant side…

Q: The half-life of 90Sr is 28 years. How long will it take for a given sample of to be 73% decomposed?…

A: Given, Half life of 90Sr (t1/2)  = 28 years Time required for a decomposition of 73% of the given…

Q: 13. 64 mCi of fluorine-18 (t,/2 ~ 110 min) is produced at 1:00 p.m. How much activity is expected to…

A: Answer:- this question is answered by using the simple concept of radioactivity which follows the…

Q: Given a solution containing 0.010 M CaCl2 and 0.020 M MgCl2, what is the activity of Cl? O 0.046…

A: For a dilute solution, we know that activity will be the same as that of the concentration.  Here,…