What is the ph at the equivalence point when when 400 ml of
What is the pH at the equivalence point when when 40.0 mL of 0.183 mol/L HC7H5O2(aq) is titrated with 0.131 mol/L NaOH(aq)? Assume the temperature is 25oC. (For HC7H5O2, pKa=4.21 at 25oC).
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The firm is proposing to buy a new plant which can generate additional annual profit of Rs. 10,000. The fixed costs of new plant is expected to Rs. 4000. The new plant will increase the sales volume by Rs. 40,000. It can be assumed that the ratio bet
Water from a lower reservoir (water surface elevation) 500 m is pumping to the upper reservoir (water surface elevation 600 m) through a 5000 m long straight pipe with 0.5 m diameter.
For a solution that is 0.282 M NH3 and 0.117 M NH4NO3, calculate the following. For NH3, Kb is 1.8x10-5. Enter [OH?] and [H3O+] with two significant digits. Enter scientific notation as 1.23E4.
Design the beam in US customary units using f'c=4ksi and fy=413.4MPa. If necessary use d'=2.5in. Assume an exterior exposure according to ACI 318 and b=15in.
What is the pH at the equivalence point when when 40.0 mL of 0.183 mol/L HC7H5O2(aq) is titrated with 0.131 mol/L NaOH(aq)? Assume the temperature is 25oC
A stunt driver wants to make his car jump over 8 cars parked side by side below a horizontal ramp as seen in the figure below. With what minimum speed must he drive off the horizontal ramp to just barely make it across
A long trough is supported by a hinge along its lower edge and a series of horizontal cables attached to its upper edge. Determine the tension in each of the cables, at a time when the trough is full of water.
Calculate the pH at the points in the titration of 40.00 mL of 0.425 M NH3 for the reaction below. NH3(aq) + HNO3? NH4+(aq) + NO3?(aq) For NH3, Kb = 1.8x10-5. Enter your answer with 2 decimal places. Enter scientific notation as 1.23E4.
Assume that (a) the price level is flexible upward but not downward and (b) the economy is currently operating at its full-employment output. Other things equal,how will each of the following affect the equilibrium price level and equilibrium level o
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A nurse is caring for a 4-year-old with a fever, rash, redness, swelling of the hands and feet, and cervical lymphadenopathy.
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