Answer:
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Explanation:
Answer:
Na2SO4 is equal to 0.0070401642780093 mole.
Explanation:
Answer : The volume of stock solution needed are, 12.5 mL
Explanation :
Formula used :

where,
are the initial molarity and volume of copper (II) chloride.
are the final molarity and volume of stock solution of copper (II) chloride.
We are given:

Putting values in above equation, we get:

Hence, the volume of stock solution needed are, 12.5 mL
A. solutions and colloids