Answer: 18 DAYS IS THE HALF LIFE OF THE RADIOISOTOPE.

This particle is emitted as an electron. Thorium-234 has a half-life of 24 days.

1 Expert Answer Because the half-life is 6 hours, the starting amount will be halved every 6 hours. Because there are 18 total hours, the starting amount will be divided by 2 (halved) three times. You will then have 1/6 of the starting amount, thus being 384 grams/ 6 = 48 grams.

The answer is: 3) 7.64 days.

A medication’s biological half-life refers simply to how long it takes for half of the dose to be metabolized and eliminated from the bloodstream. Or, put another way, the half-life of a drug is the time it takes for it to be reduced by half.

The half-life of a drug is the time taken for the plasma concentration of a drug to reduce to half its original value. Half-life is used to estimate how long it takes for a drug to be removed from your body. For example: The half-life of Ambien is about 2 hours.

In brief :

1. Half-life (t½) is the time required to reduce the concentration of a drug by half.
2. The formula for half-life is (t½ = 0.693 × Vd /CL)
3. Volume of distribution (Vd) and clearance (CL) are required to calculate this variable.

Every radioactive isotope has a half-life, and the process describing the exponential decay of an isotope is called radioactive decay. We find that the half-life depends only on the constant k and not on the starting quantity A0 . 12A0=Aoekt12=ektDivide both sides by A0.

It has a negative sign because the number of nuclei of the isotope will decrease over time. The rate of decay is equal to the number of the nuclei multiplied by a proportionality constant that depends on the exact isotope. Bauer shows the decay of radioactive nuclei as a function of the half-life.

One of the common terms associated with exponential decay, as stated above, is half-life, the length of time it takes an exponentially decaying quantity to decrease to half its original amount.

Remember that the decay/growth rate must be in decimal form. A half-life, the amount of time it takes to deplete half the original amount, infers decay. In this case b will be a decay factor. The decay factor is b = 1 – r.

There are many real-life examples of exponential decay. For example, suppose that the population of a city was 100,000 in 1980. Then every year after that, the population has decreased by 3% as a result of heavy pollution. This is an example of exponential decay.

It’s exponential growth when the base of our exponential is bigger than 1, which means those numbers get bigger. It’s exponential decay when the base of our exponential is in between 1 and 0 and those numbers get smaller.

1 : of or relating to an exponent. 2 : involving a variable in an exponent 10x is an exponential expression. 3 : expressible or approximately expressible by an exponential function especially : characterized by or being an extremely rapid increase (as in size or extent) an exponential growth rate.

In mathematics, exponential decay describes the process of reducing an amount by a consistent percentage rate over a period of time. It can be expressed by the formula y=a(1-b)x wherein y is the final amount, a is the original amount, b is the decay factor, and x is the amount of time that has passed.

10 Real Life Examples Of Exponential Growth

• Microorganisms in Culture. During a pathology test in the hospital, a pathologist follows the concept of exponential growth to grow the microorganism extracted from the sample.
• Spoilage of Food.
• Human Population.
• Compound Interest.
• Pandemics.
• Ebola Epidemic.
• Invasive Species.
• Fire.

Exponential growth is when numbers increase rapidly in an exponential fashion so for every x-value on a graph there is a larger y-value. Decay is when numbers decrease rapidly in an exponential fashion so for every x-value on a graph there is a smaller y-value.

If a is positive and b is greater than 1 , then it is exponential growth. If a is positive and b is less than 1 but greater than 0 , then it is exponential decay.

You can do an exponential equation without a table and going straight to the equation, Y=C(1+/- r)^T with C being the starting value, the + being for a growth problem, the – being for a decay problem, the r being the percent increase or decrease, and the T being the time.