0
That is completely unrealistic. C-14 has a half-life of several thousand years, not a few hours as implied in this example.
Anyway, to solve this in general you can write the exponential equation:
N = N0e-λt
where N is the remaining amount, N0 is the original amount, λ is the decay constant, and t is the time. Replace the numbers you know, and solve for λ. Note that the "disintegrations per minute" are proportional to the amount of remaining substance, so you can just as well assume that those numbers represent the remaining amount.
What else can I help you with?
Activity of an isotope is measured in Curies and Becquerels?
Yes.A Curie (Ci) is 3.7 x 1010 disintegrations per second, and corresponds to about 1 gram of Radium-226.A Becqueral (Bq) is 1 disintegration per second, corresponding to about 2.7 x 10-11 Ci.Also used is the microcurie, µCi, which is about 2.22 x 106 disintegrations per minute, corresponding to about 10 times the normal amount of Potassium-40 contained in a human body.
What is the rate of decay of a radioactive element is measured by?
By Becquerels, which is one disintegration per second, or by curies, which is 3.3x1010 disintegrations per second.
What is the SI unit of radiation constant?
In the SI system the radiation constant (Stefan-Boltzmann constant) is measured in W/m2.K4.
What is a curie and becquerel?
Curie (Ci) and Becquerel (Bq) are both units in which activity is measured; activity being the time rate of change of the number of the radioactive nuclei.Becquerel is the common/most widely used unit.Curie is the SI unit.1 Ci = 3.7 x 1010 Bq
What is the difference between shelf life and half life?
Shelf life refers to the time a product can be stored before it is no longer safe for consumption or use. Half life, on the other hand, is the time it takes for half of a substance to decay or lose its potency through a process such as radioactive decay or chemical breakdown.
How can true rate of emission can be measured using geiger counter?
The Geiger counter measures a percentage of the disintegrations that occur in a radioactive source. Assuming the geometry is calibrated, you can back calculate the countrate into the disintegration rate, and that is proportional to the activity.
Activity of an isotope is measured in Curies and Becquerels?
Yes.A Curie (Ci) is 3.7 x 1010 disintegrations per second, and corresponds to about 1 gram of Radium-226.A Becqueral (Bq) is 1 disintegration per second, corresponding to about 2.7 x 10-11 Ci.Also used is the microcurie, µCi, which is about 2.22 x 106 disintegrations per minute, corresponding to about 10 times the normal amount of Potassium-40 contained in a human body.
What is the rate of decay of a radioactive element is measured by?
By Becquerels, which is one disintegration per second, or by curies, which is 3.3x1010 disintegrations per second.
What is the measured action of an activity?
What is the measured action of an activity?
Who measured the gravitational constant G?
Cavendish measured the gravitational constant "G".
What is the measured action of an action?
What is the measured action of an activity?
How is economic activity most commonly measured?
Economic activity is commonly measured as gross domestic product.
Constant speed is measured by what?
Velocity is measured in meters/second in the S.I. system.
What is the SI unit of radiation constant?
In the SI system the radiation constant (Stefan-Boltzmann constant) is measured in W/m2.K4.
How is performance measured in activity-based management?
Performance is measured by a financial or nonfinancial indicator that is causally related to the performance (adding value to a product or service) of an activity and can be used to manage and improve the performance of that activity.
The measured action of an activity?
The measured action of an activity refers to quantifiable data or metrics that capture the performance or outcome of that activity. It can provide valuable insights into the effectiveness, efficiency, and impact of the activity, helping to inform decision-making and improvement strategies.
Why is mass measured by spring balance is not constant everywhere?
because
