Answer:
Iodide concentration: 0.02M I⁻
Persulfate concentration: 0.02M S₂O₈²⁻
Explanation:
In chemistry, a dilution is the process in which the concentration of solute is reduced by addition of more solvent.
Iodide (KI → I⁻), has a concentration of 0.20M. If you add 5mL resulting in a final volume of 50mL, the final concentration decreases in:
0.20M × (5mL /50mL) = <em>0.02M I⁻</em>
The persulfate ion (K₂S₂O₈ → S₂O₈²⁻) has a concentration of 0.10M in 10mL that result in a final volume of 50mL. That means final concentration is:
0.10M × (10mL /50mL) = <em>0.02M S₂O₈²⁻</em>
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I hope it helps!
Hello
its me
and alsooo
the awnser is
number 3 lol
Answer:
D.
Explanation:
If a compound is composed of oppositely charged ions, it has to be formed by metal and non-metal.
Li2O
Li - metal
O - non-metal
In order to find the answer you must plug in the information to the frequency equation,
. C is the speed of light, 3.0 x 10^8. By plugging in the information you receive a frequency of
3.0 x 10^7 hz.