A mixture is made from different substances that are not chemically joined. For example, powdered iron and powdered sulfur mixed together makes a mixture of iron and sulfur.
Answer:
83 mL
Explanation:
Use the dilution equation M1V1 = M2V2
M1 = 18 M
V1 = ?
M2 = 6.0 M
M2 = 250 mL
Solve for V1 --> V1 = M2V2/M1
V1 = (6.0 M)(250 mL) / (18 M) = 83 mL
Answer : The pH of the solution is, 1.25
Explanation : Given,
Concentration (C) = 0.056 M
The equilibrium reaction will be,
From the balanced chemical reaction, we conclude that
1 mole of 
dissociate to give 1 mole of 
ion
So, the concentration of = the concentration of = 0.056 M
Now we have to calculate the pH.
![pH=-\log [H^+]](https://tex.z-dn.net/?f=pH%3D-%5Clog%20%5BH%5E%2B%5D)
Therefore, the pH of the solution is, 1.25
Number of moles:
n = M x V
n = 0.002915 x 1.25
n = 0.00364375 moles
