They're malleable and have high melting and boiling points
The combustion of a substance forming or breaking bonds mixing two substances.
Answer:
the correct answer is $2.06
Explanation:
<em>hope</em><em> </em><em>it'll</em><em> </em><em>help you</em><em>.</em><em>.</em><em>.</em>
First let us calculate for the rate constant k from the
formula:
k = ln(2) / t0.5
where t0.5 is the half life
k = ln(2) / 1.3x10^9 years
k = 5.33x10^-10 years-1
Then we use the formula:
A/Ao = e^-kt
where A/Ao is the amount remaining = 25% = 0.25, t is
time
Rearranging to get t:
t = ln(A/Ao) / -k
t = ln(0.25) / (-5.33x10^-10 years-1)
t = 2.6x10^9 years
1. C
2. E
3. A
4. B
5. D
I hope that helps <3
