Chemistry problems - 1. how could you separate BaSo4 from NH4Cl?
2. how could you separate ZnCl2 from ZnS?
3. how could you separate TeO2 from SiO2?
4. how could you separate Naphthalene from potassium bromide?
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Calculate the pH for a buffer solution. - Calculate the pH for a buffer solution prepared by mixing 100. mL of 0.60 M NH3 and 200. mL of 0.45 M NH4Cl.
The Ka of NH4 + = 5.6 x 10^-10.
a) 8.65
b) 9.08
c) 9.87
d) 4.90
e) 6.62
concentration - a solution is prepared by dissolving 3.50 grams of NH4Cl in enough water to make 250 mL of solution. What is the concentration of this solution
please provide step by step instuctions.