Answer:
pH = 4.78
Explanation:
<em>There are titrated 65.8mL of a 0.7600M of acetic acid</em>
The reaction of acetic acid, CH₃COOH, with NaOH is:
CH₃COOH + NaOH → CH₃COONa + H₂O
Initial moles of acetic acid are:
0.0658L ₓ (0.7600mol / L) = 0.05000 moles of CH₃COOH
Moles of NaOH added to the acid solution are:
0.0784L ₓ (0.3500mol / L) = 0.02744 moles of NaOH = Moles of CH₃COONa produced -<em>Because NaOH is the limiting reactant-</em>
That means after the reaction moles of CH₃COOH and moles of CH₃COONa are:
CH₃COOH: 0.05000 mol - 0.02744 mol = 0.02256 moles
CH₃COONa: 0.02744 moles
Using H-H equation for acetic acid, pH of the solution is:
pH = 4.70 + log₁₀ [CH₃COONa] / [CH₃COOH]
Replacing:
pH = 4.70 + log₁₀ [0.02744] / [0.02256]
<h3>pH = 4.78</h3>
Answer:
A) Age!! Its because even if the object was 1 year old or 100 years old, nothing about the impact would change. However, those other categories depict features that would definitely make an impact. For example as object that is big, fast, and hits at an angle perpendicular to whatever it is moving towards, the impact will be very lage. But if its the opposite and it was small and slow, then the impact crater would not be as large. Good luck on your quiz!!
The answer is A) glucose and oxygen
Ammonium iodide, or NH₄I, is a salt. Since all salts are strong electrolytes, when ammonium iodide is dissolved in water, it would dissociate into ammonium ions and iodide ions. Hence, the major species present would be: <em>NH₄⁺ and I⁻ ions</em>.
Answer:
Sedimentary Rock. You know from the fossils and remains of shells inside.
Explanation:
If it were igneous, the fossils would be melted away. Maybe not with metamorphic, but it's most likely sedimentary.