Calulate the molarity of acetic acid in a venegar sample
Calulate the molarity of acetic acid in a venegar sample knowing that 5.00mL of vinegar requires 43.50mL of 0.105 M NaOH to reach the phenolphthalein endpoint in a titration.
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A multimode fiber with a 50-μm core diameter is designed to limit the intermodal dispersion to 10 ns/km. What is the numerical aperture of this fiber?for the refractive index of the cladding.
You have 500.0 mL of a buffer solution containing 0.30 M acetic acid (CH3COOH) and 0.20 M sodium acetate (CH3COONa). What will the pH of this solution be after the addition of 20.0 mL of 1.00 M NaOH solution? [Ka = 1.8 × 10-5]
A 3.0 liter sample of helium was place in a container fitted with a porous membrane. Half of the helium effused through the membrane in 24 hours. A 3.0 liter sample of oxygen was placed in an identical container. How many hours will it take for al
A pinion in mesh with a gear. The pinion is rotating a 550 RPM with an input power of 15 HP. The pinion has 18 teeth and diameter pitch of 4. The gear has 42 teeth.
What is the equilibrium partial pressure of when equilibrium is reestablished following the addition of 0.100 of? What is the equilibrium partial pressure of when equilibrium is reestablished following the addition of 0.100 of?
A 3.0 liter sample of helium was placed in container fitted with a porous membrane. Half of the helium effused through the membrane in 24 hours. A 3.0 liter sample of oxygen was placed in an identical container. How many hours will it take for all
In the single-phase interface for a bi-directional power flow, VS =240 V(rms) at 50 Hz and LS = 3.5 mH.. The switch-mode converter is PWM controlled in its linear range with . The converter is controlled such that iS is either in phase or out
A top-level room in a high-rise building (L/W of 1) has a double-hung window (2m by 4m) of average fit that is not weather stripped. In summer, a wind of 10 m/s blows the window at an incident angle of 30 degree.
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