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Compute the de Broglie wavelength of an electron accelerated from rest through a potential difference of (a) 100 V, (b) 1.0 kV, (c) 100 kV
a student prepared aspirin in a laboratory experiment using the reaction. the student reacted 1.50g salicylic acid with 2.00g acetic anhydride. the yield was 1.50g aspirin. calculate the theoretical yield and the percent yield for this experiment.
What is the age of the wine in the glass on the left, and the glass on the right? b. What assumption(s) do you have to make in order to compare their tritium counts?
A carboxylic acid can react with a strong base, such as NaOH, to produce a carboxylate salt (in this case, a sodium salt of a carboxylic acid)
A 25.688 g sample of aqueous waste leaving a fertilizer manufacturer contains ammonia.
If magnesium oxide smoke has been lost in too great an amount during the heating of the crucible would this have made the calculation % Mg in the product too high or too low? Explain.
Consider the titration of 50.0 mL of 0.217 M HN3 (Ka = 2.6 x 10-5) with 0.183 M NaOH. Calculate the pH of the solution after the addition of 29.6 mL of NaOH solution.
A 53.6 gram sample of an unknown substance contains 11.5 grams of carbon. What is the percent by mass of carbon in the compound?
Although the double bond, in total, is stronger than a single bond, the pi bond itself is weaker and can react with electron-deficient species such as a hydrogen ion.
Sulfuric acid (H2SO4) is a very strong diprotic acid. If 0.025 moles of sulfuric acid is mixed with water to make 115 mililiter of solution, what is the molarity of H+?
Solve an equilibrium problem (using an ICE table) to calculate the pH of 0.12M HF, 0.12M NaF, and a mixture that is 0.12M HF and 0.12M NaF.
A 49 gram sample of impure potassium nitrate (KNO3) was heated to complete decomposition according to the equation 2 KNO3(s) → 2 KNO2(s) + O2(g) After the reaction was complete.
How does the size of ions in a solution affect the solutions conductivity. Would you expect the conductivity of a solution containing an equal concentration of ions with a charge of +2 to be twice that of one containing ions with a charge of +1
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