What is the half life of phosphoru's-32?

Answer 1

Ignoring the self-negation in the question, the stable isotope of phosphorous is P31.

Other isotopes range from P28 at 28ms through to P35 at 47seconds.

Not ignoring the self-negation in the question, a stable isotope, by definition, doesn't decay, and therefore has no half-life.

Answer 2

fraction remaining = 0.5^n where n = number of half lives elapsed
n = 71.5 day/14.3 days = 5 half lives have elapsed
fraction remaining = 0.5^5 = 0.03125
mass remaining = 5.000 g x 0.03125 = 0.1563 grams remain

Answer 3

The half-life of phosphorus-32 is 14.262 days.

http://www.nndc.bnl.gov/chart/

Answer 4

0.25 grams of isotope will remain.

Answer 5

The half-life time of P-32 is 14.3 days.

Answer 6

It is 14.28 days.

Answer 7

0.15625 g would be left.

Answer 8

16