A Beta particles is emitted when an atom of 85Kr spontaneously decays.
Answer : The volume of 4.9 M 
stock solution used to prepare the solution is, 12.24 ml
Solution : Given,
Molarity of aqueous solution = 1.20 M = 1.20 mole/L
Volume of aqueous solution = 50.0 ml = 0.05 L
(1 L = 1000 ml)
Molarity of stock solution = 4.9 M = 4.9 mole/L
Formula used :
where,
= Molarity of aqueous solution
= Molarity of stock solution
= Volume of aqueous solution
= Volume of stock solution
Now put all the given values in this formula, we get the volume of stock solution.
By rearranging the term, we get
Therefore, the volume of 4.9 M stock solution used to prepare the solution is, 12.24 ml
3.gases- <span> Their molecules are already the farthest apart compared with solids and liquids, and small changes in temperature causes these loose molecules.</span>
Answer:
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Hello there,
Ione pairs of electrons that are present in a molecule of C2O are...
4
Each Oxygen forms two bonds with Carbon
Hope I Helped!
-Char
