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1) You need to measure the half-life of some random element. What instruments do you need? What values you need to measure? What results you will probably get?

2) You need to check the radioactivity for some random objects. What instruments do you need? What values you need to measure? What results you will probably get?

3) Why can't we use the radioactivity decay law (probably meant the one that shows how many atoms decay in time) with small number of atoms?

4) About carbon-14 dating. It is said that 1 gram of a random bone has 2 decays in a minute. Normal bone has 16 decays per minute. What is the age of the bone?

1) I think of using very precise scales. Measure mass and wait until half of the mass is gone. So I simply need to measure mass and time. I will most probably get only aprox. results, because scales won't measure 1 or 2 atom mass.

2) I thinking to use greiger counter. If the meter makes sound more rapidly, then material is more radioactive. I will probably get also aprox. results because I need isolated room, because other objects in the room could give scintillations.

3) If my method using scales to measure half-life, then the problem also be with the precision of scales, few atoms could be missed, but a ton of atoms won't be missed so easily.

4) Here I actually don't know what to do. I thought to calculate how many atoms are in 1 gram of carbon-14 and then use some equation I found in my book - N=N(0) * e^(ln2*t/T)

N will be N(0) - 2 and N(0) will be atoms in 1 gram and t will be the time, also T is a constant (not given, but maybe I should know it anyway), book says T is 5730 years. But this leaves out data about normal bone, so probably I'm thinking wrong :(

P.S. I hope my post won't be deleted because I didn't use the template.