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How Long Is the Half-Life of an Isotope if a Sample of the Isotope that Registers 60000 cpm on the Geiger Counter Decays to 15000 cpm After 150 Minutes?
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What is the halflife of Carbon-11?
The half-life of carbon-11 is 20.334 minutes.
How much would still remain in 30 minutes if you had a 5 - grm sample of lawrencium?
The half life is different for each isotope of Lr; name the isotope.
What fraction of the parent isotope will be left after 30 minutes?
It depends on the half life of the isotope. If the half life is, for example, 10 minutes, then 1/8 of the parent isotope will remain (30/10 = 3; 1/2^3 = 1/8). Essentially, to work out the remaining fraction, you firstly divide the period of time by the half life (the answer in this case is X), and then do 1/2 to the power of x.
What are you isotope or ion 17 protons 18 electrons 21 neutrons?
The element that has 17 protons is Chlorine, or Cl. The particular isotope of Cl that has 21 neutrons is called 38Cl, and is radioactive, having a half-life of 37.24 minutes. In this particular case, the number of electrons of this isotope are greater than its number of protons by one. That means that this isotope is also an ion, and is labeled as 38Cl-.
How many protons and neutrons are in damstadium?
The chemical element, Darmstadium, has an atomic number of 110. That means that it has 110 protons in it. It's longest-lived isotope, at 3.7 minutes, is 281bDs. That means that this isotope has 281 - 110 = 171 neutrons in it.
Is any isotope of lead is radioactive?
many. one example is lead-214 with a halflife of 26.8 minutes.
The counter on a tape recorder registers 520 after the recorder has been running for 20 minutes What would the counter register after half an hour?
780
What is the halflife of Carbon-11?
The half-life of carbon-11 is 20.334 minutes.
What is the halflife of Uranium-239?
The half-life of uranium-239 is 23.45 minutes.
What is the halflife of plutonium 235?
The half life of plutonium-235 is 25,3(5) minutes.
How many minute will it take for 1gram of francium isotope to decay to 0.125gram?
Each isotope has another half life.For the isotope francium-223 (half life = 21,8 minutes) the time is 87,2 minutes.
What does the 218 in -218 polonium represent?
218Po (or polonium 218) is an isotope of polonium; 218 is the mass number of this isotope. The exact mass is: 218,0089730(26); the half life of this isotope is 3,10(1) minutes.
How long can you keep boiled hamburger on the counter?
You can keep boiled hamburger on the counter for about 30 minutes.
When an extra neutron was added to Uranium-238 what is the name of the resulting Uranium-238 isotope?
The resulting isotope is uranium 239 with a half life of 23.5 minutes (beta desintegration).
What type of counter is used in digital wrist watch?
binary divide by 32768 between the crystal oscillator and the seconds digitdecimal counter (0 to 9) for the seconds digitsix counter (0 to 5) for the tens of seconds digitdecimal counter (0 to 9) for the minutes digitsix counter (0 to 5) for the tens of minutes digitduodecimal counter (1 to 12) for the hours digitsbinary counter for the AM/PM indicator
How much would still remain in 30 minutes if you had a 5 - grm sample of lawrencium?
The half life is different for each isotope of Lr; name the isotope.
What is the half life of fermium 256?
The half life of the isotope fermium-256 is 157,6(13) minutes..
