Answer:
E
Step-by-step explanation:
71 is a prime numberrrrrrr
Answer:
o
Step-by-step explanation:
o
thx for the points :D
Answer:
5/48
Step-by-step explanation:
A=(pg) over 2 = four times thirty over two equals 60
Answer:
option A
Step-by-step explanation:
given,
sample of tritium, ³H
contents present of ³H = 5.25 mol
content of ³He = 6.35 mol
reaction

A₀ is the initial concentration
At is the concentration after time t
A₀ = 5.25 + 6.35 = 11.6 mol
At = 5.25
now,


k = 0.0563 /year



t = 14.1 yr
hence, the correct answer is option A