Answer:
I think so henterogeneous
6.022×10^23 should be correct. Are there any options to choose from?
<u>Avogadros number</u>
For one a homogenous mixture cannot be separated using filtration. Hope this helps:)
It takes 33.4 s for the concentration of A to fall to one-fourth of its original value.
A <em>half-life</em> is the time it takes for the concentration to fall to half its original value.
Assume the initial concentration is 1.00 mol/L. Then,

The concentration drops to one-fourth of its initial value in two half-lives.
∴ Time = 2 × 16.7 s = 33.4 s