Answer:
half-life=T= 36.9 years
Explanation:
As we know that
N
(
t
)
=
N
(
0
)
⋅
0.5
^(t/
T
)
N
(
0
)
=the number of atoms you start with=20 gram
and N
(
t
)= the number of atoms left=0.625 grams
after a certain time=t=184.5 years
T=half life of a nuclide=?
Putting value in above equation we get
half-life=T= 36.9 years
.
It's a single- replacement reaction so Mg+ 2HCl ➡️ H2+ MgCl2
<span>The thermosetting are ideal for high-heat applications such as the electronics & the appliances .
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The answer of the question is C. Magnetic fields