Explanation:
the ice release energy which case water molecule to have least kinetic and potential energy change their confiscation for solid
B. Without a doubt,
(3.9-2.6)÷3.9
=33.3333...
≈33.33%
The answer is C. stirring.
Ca(OH)2 + H3PO4
hope it helps
For radioactive decay, we can relate current amount, initial amount, decay constant and time using:
N = No x exp(-λt)
Half-life = ln(2)/λ
λ = ln(2) / 5730
N/No = 80% = 0.8
0.8 = exp( -ln(2)/5730 x t)
t = 1844 years