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Respiratory protection devices are available in two basic design types: Air-Purifying Respirators (APR) and Supplied-Air Respirators (SAR). As a trained hazardous materials specialist, your employer asks you to evaluate each of the following four possible workplace conditions:
For each of the above four conditions:
A 155 mL sample of rainwater is titrated using 0.0095 M NaOH solution. If 4.8 mL of the NaOH solution was required to reach the endpoint, what was the pH of the rainwater?
What by-product is formed along with benzilic acid in this experiment? Draw a structural formula for this substence.
Explain how you would prepare this buffer solution. Be specific about the volumes of the solutions you would use.
Problem- Which forms of D-glucose in the ring configuration has the -OH at carbon-1 below the ring, in the Haworth Projection
Explain how much reference material would utilize to generate a calibration point of 2 ng if the reference material had a concentration of 0.0371 ppm of mercury
The first ionization energy for Na is 495.9 kJ/mol. Compute the maximum wavelength of light in nm required to ionize a single Na atom.
If 0.117 g of oxalic acid dihydrate is neutralized by 19.55 mL of a NaOH solution, explain what is the molar concentration of the NaOH solution. Oxalic acid is a diprotic acid. Explain what is the balanced equation
What is the concentration of the acid and base form of acetic acid when you start the experiment? c) In the process of the enzyme catalyzed reaction, 5mM H+ is produced. What is the pH of the solution after the reaction is complete?
Calculate the final molarity of acetate anion in the solution. You can assume the volume of the solution doesn't change when the ammonium acetate is dissolved in it.
Calculate the molality of a hydrochloric acid solution that is 26.4% by mass and has a density of 1.19 g mL^-1
Starting with the standard free energies of formation from the following table calculate the values of delta G° and E° cell of the following reactions:
For a gas sample of N molecules that consists of N1 molecules of mass m1 and N2 molecules of mass m2, follow through a derivation which led to the result PV=1/3mv2 and PV = nRT.
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