What is the half-life of a radioactive substance if 75\% of any given amount of the substance?

Solution: 75\% of the substance disintegrates in two half lives. ∴ t1/2=15min.

What is the half-life of a radioactive substance if 75\% of any given amount of the substance disintegrates in 40 minutes?

Hence, the half-life of the substance is 13 min 20 sec.

How long will it take for 75\% of the atoms of a certain?

How long will it take for 75\% of the atoms of a certain radioactive element, originally present to disintegrate? The half-life of the element is 10 days.

What is the half-life of a radioactive substance if 75 of its given amount disintegrate in 60 minutes?

half life of a radioactive substance which disintegrates by 75\% in 60 minutes will be. 75\% of the substance disintegrates into two half lives. ∴ 2 half – lives = 60 min ∴t1/2=30 min.

What is the half-life of a compound if 75 percent of a given sample of the compound decomposes in 60 minutes?

So to multiply by t half equal to 60 minutes, Antifa from here will be called to 30 minutes. No. So therefore the half life period off the compound is 30 minute.

What is the half-life of this substance?

The half-life of a radioactive substance is a characteristic constant. It measures the time it takes for a given amount of the substance to become reduced by half as a consequence of decay, and therefore, the emission of radiation.

What is the half life of a compound if 75 percent of a given sample of the compound decomposes in 60 minutes?

What is half life measured in?

A number of measurements are made and an average value is calculated. The average value is the half-life of the radioactive source….Measuring half-life.

Time (hours)	Corrected count rate (counts per minute)
3	35
4	20
5	13

What is the half-life of a compound if 75 percent of a given sample of the compound decomposes in 60 min assume first order kinetics *?

What is the half-life of a compound which decomposes by a first order process if 17.0\% of the compound decomposes in 60.0 minutes?

The half-life is (b) 12 minutes.

What is the formula for calculating half-life?

The half-life of a reaction is the time required for the reactant concentration to decrease to one-half its initial value. The half-life of a first-order reaction is a constant that is related to the rate constant for the reaction: t1/2 = 0.693/k.

How many half lives will occur in 40 years?

As such, the reported half life of 5730 \pm 40 years means that 40 years is the standard deviation for the process and so we expect that roughly 68 percent of the time half of the Carbon 14 in a given sample will decay within the time span of 5730 \pm 40 years.

How many half-lives does it take to decay from 40\% to 85\%?

For the first time, you have less than one half life, with slightly more than half remaining. For the second time, you have slightly less than three half lives, so should have slightly more than 12.5\% remaining. To go from 40\% decay to 85\% decay takes 2 half-lives. (1/2)^n = (1–0.4), so n is approximately 0.736967 half-lives.

How long does it take for a radioactive sample to decay?

A radioactive sample is considered to be completely decayed after 10 half-lives. How much time will elapse for this sample to be considered gone? Problem #8:At time zero, there are 10.0 grams of W-187.

What is the decay constant of particulate decay?

The probability to decay/time is termed the ”decay constant”, and is given thesymbol λ. The value of the decay constant depends on the nature of the particulardecay process. λ≡the probabilty to decay per unit time (units of 1/time)

What is the decay time of a 208g sample of sodium 24?

Example #3:A 208 g sample of sodium-24 decays to 13.0 g of sodium-24 in 60.0 hr. What is the half-life of this radioactive isotope?