ajordan101 ajordan101
  • 21-02-2016
  • Physics
contestada

Radioactive decay of 40k atoms in an igneous rock has resulted in a radio of 25 percent 40k atoms to 75 percent 40Ar and 40Ca atoms. How many years old is this rock

Respuesta :

AL2006
AL2006 AL2006
  • 21-02-2016
In order to answer this, we would need to know
the half-life of ⁴⁰K.  Perhaps when you look that up,
you'll be able to answer this on your own.

Answer Link

Otras preguntas

How to install CD-ROM drivers in a MS-DOS 6.22 virtual machine?
estimate the line of best fit using two points on the line.
which line creates a bright and cheery tone? 1.fog rolled thickly over the fields shrouding them in the gray and brown colors of winter. 2.light bounced a cro
When is the magnetic field the strongest?
How much is three half’s plus one fifth
can I please get help with this question? thanks in advance.
Answer number 1-4 practice 1
could someone please explain what each step is and what each step is called? only 15 and 17 please and thank you
Which of the following types of maps shows correct shapes and directions but distorts distances or sizes? A. equal-area projection B. Mercator projection
last month Ed ate 9 apples 5 bananas 4 peaches and 7 oranges find the ratio of bananas to the total number of fruit