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2 questions #1 Suppose that during the NaOH standardization procedure you spill some weighted KHP sample before it can be dissolved in water. You continue with the procedure as nothing had happened. How will this error influnece the calculated NaOH concentration? a) calculated concentration will be higher than the correct concentration. b) will be lower c) will not be influenced. explain answer: #2 Suppose that while titrating a KHP sample and you run past the end point and add more NaOH than you should. How will this error influence the calculated NaOH concentration? a)will be higher b)will be lower c)will not be influenced explain answer:f
Using the Henderson-Hasselbalch equation determine the pKa for illinic acid from the following values: At pH 9.02, the concentration of illinic acid and its conjugate base
A particular application calls for N2 (g) with a density of 1.80 g/L at 32°C. What must be the pressure of N2 (g) in millimeters in mercury? What is the molar volume under these conditions
what is the corresponding pressure difference between points A and B, in mmHg. At which point (A or B) is the pressure higher, and why? The temperature is 60 °F throughout
The hydrogen gas bubbled through water for collection and becomes saturated with vapor water. Suppose 240. mL of hydrogen gas is collected at 40.0 C and has a total pressure of 1.030 atm by this process, How many grams of zinc must have reacted to..
the water-cyclohexanone-diethyl ether mixture. Explain how the addition of sodium chloride aids in isolation of the cyclohexanone product.
Liver alcohol dehydrogenase (ADH) is relatively nonspecific and will oxidize ethanol or other alcohols, including methanol. Methanol oxidation yields formaldehyde, which is quite toxic, causing among other things, blindness
Problem- Determine the molar mass of chloroform gas if a sample weighing 0.389 g is collected in a flask with a volume of 102 cm3 at 97 C. The pressure of the chloroform is .958 atm
What mass of solid sodium hypochlorite (molar mass = 74.44 g/mol) should be added to 1.0 L of 0.255M hypochlorous acid to make a buffer with a pH of 7.54?
a standard solution of sodium hydroxide has a molar concentration of 0.128m. you use 25.00ml of a solution of
Determine the dissociation constants for the following acids. Express the answers in proper scientific notation where appropriate
A compounds 'H NMR spectrum shows resonance at 9.28 and 7.50 ppm what possible structural subunit does the compound contain
A 51-kg person drinks 390. g of milk, which has a "caloric" value of approximately 3.0 kJ g-1. If only 16% of the energy in milk is converted to mechanical work, how high (in meters) can the person climb based on this energy intake?
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