Hello!
To solve this problem we need to know the value of
pKa for HC₂H₃O₂ (Acetic Acid) which is
4,76. Now we can apply the
Henderson-Hasselbach equation, as follows (assuming that HC₂H₃O₂ concentration is 0,22M):
So, the pH for this buffer solution of HC₂H₃O₂ and KC₂H₃O₂ is
4,50Have a nice day!
Answer: 5.38 g Al
Explanation: solution attached:
Convert atoms of Al to moles using the Avogadro's number.
Convert moles of Al to mass using the molar mass of Al.
Answer:
Explanation:
The final net force will be in the Z- direction. Let's find out the z component of the force on the differential volume of charge is:
df = dqEcosθz
dq = ρdV = dr.sinθdθdΦ
integrate it over half ball,
.sinθcosθdθdΦ.( these are part of the integral, i was unable to write it in equation format).
= sinθcosθdθ
=
Molar mass of N = 14 g/molMolar mass of O2 = 32 g/molAdding both masses = 46 g/molActual molar mass/ Empirical molar mass = 138.02 / 46 = 3Now multiplying this co effecient with empirical fomula NO2 = 3(NO2) = N3O6So according to above explanation,D) N3O6, is the correct answer.
What volume of 2.50 m lead ll nitrato