Answer:
ive been there before but im not from there
Explanation:
The answer is 1/16.
Half-life is the time required for the amount of a sample to half its value.
To calculate this, we will use the following formulas:
1.
,
where:
<span>n - a number of half-lives
</span>x - a remained fraction of a sample
2.
where:
<span>
- half-life
</span>t - <span>total time elapsed
</span><span>n - a number of half-lives
</span>
So, we know:
t = 10 min
<span>
= 2.5 min
We need:
n = ?
x = ?
</span>
We could first use the second equation to calculate n:
<span>If:
,
</span>Then:
⇒
⇒
<span>
</span>
Now we can use the first equation to calculate the remained fraction of the sample.
<span>
</span>⇒
<span>⇒
</span>
<span>The best property for ionic bonds is its conductivity of electricity when molten. An experiment that can be recalled on this is the NaCl in water that is used to light up a bulb. Ionic compounds are highly soluble in water when dissociates. They also have high boiling points because of the ions integrated. </span>