One pg (picogram) of 40K has how many nuclei?
a. 
b. 
c. 
d. 
e. 
e.
Physics & Space Science
You might also like to view...
Describe the large impact theory of the Moon's origin
What will be an ideal response?
Physics & Space Science
What is the significance of the zodiacal signs, and why can all twelve not be seen on a given night?
What will be an ideal response?
Physics & Space Science
A radioactive material initially is observed to have an activity of 1 600 decays/s. If six hours later it is observed to have an activity of 400 decays/s, what is its half-life?
a. six hours b. three hours c. twelve hours d. seven hours e. not enough information
Physics & Space Science
How do geologists determine the relative ages of different rocks?
What will be an ideal response?
Physics & Space Science