What concentrations of acetic acid and sodium acetate
What concentrations of acetic acid and sodium acetate are required to prepare a buffer solution with pH = 4.60? Ka =1.8 x 10-5 for acetic acid.
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A fountain runs on an electric motor and water pump. Estimate the pressure supplied by the pump and the electrical power needed by the motor.
If the net force acting on the particle is 6.22×10-3 in the positive direction, find the components of the particle's velocity. Assume the particle's velocity is in the x-y plane.
Hydrogen peroxide was catalytically decomoposed and 75.3 mL of oxygen gas was collected over water at 25 degrees celsius and 742torr. What mass of oxygen was collected? (Pwater =24 torr at 25 degrees celsius)
Determine the parachutist's acceleration when the chute is just opened, assuming his mass is 60 kg.
At steady state, a 15-W curling iron has an outer surface temperature of 90 degrees Celsius. For the curling iron, determine the rate of heat transfer, in kW, and the rate of entropy production, in kW/K.
When a current of I = 41 A exists in the wire, the wire swings upward and, at equilibrium, makes an angle φ with respect to the vertical, as the drawing shows. Find (a) the angle and (b) the tension in each of the two strings.
What is the composition of the bubbles observed when the crudemethyl benzoate product is washed with sodium bicarbonate? Hint: consider the acidity of the solution (some HCl will still be present) and the reactions of sodium bicarbonate withacids.
Find expressions for the local acceleration, the convective acceleration, ans the total acceleration. Evaluate these at point (1,2) at t=5s. Evaluate deltap at the same point and time.
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