Determine the hydroxide-ion concentration of a solution
Determine the hydroxide-ion concentration of a solution if its hydronium-ion concentration is around 1 x 10^-5 mole per liter?
Determine the pH of the solution.
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The two positive point charges are a fixed distance apart. The sum of their charges is Q_T. What charge should each encompass in order to (i) maximize the electric force among them and (ii) minimize it?
A photon consists of an energy E and wavelength\lambda before scattering from a free electron. After scattering via a 140°, the photon's wavelength has raised by 11.0%. Determine the initial wavelength of the photon in pm.
In the survey of 200 students, it was found that 60 students said English was not their first language. Make a 95% confidence interval for true proportion of students whose first language isn't English.
Assume that the water strikes the ground 4.25 m from the hole in the tank. When the hole is 2.45 m above the ground, determine how far above the hole is the water level?
Determine the hydroxide-ion concentration of a solution if its hydronium-ion concentration is around 1 x 10^-5 mole per liter? Determine the pH of the solution.
You want to reward 2% of customers that wait the longest amount of time. So what should you tell your customers regarding minimum waiting period before they can get a reward?
A lead sinker having mass 225 grams and density of 11.3 g/cm3 is joined to the bottom of a wooden block of mass 25 grams and density 0.5 g/cm3. Compute the apparent weight if both are submerged in water.
A string closed at each end is plucked and the given two standing waves (2nd harmonic and 3rd harmonic) are made. The primary frequency (n = 1) is 60 Hz. Determine the wavelength of the second harmonic (n = 2) and third harmonic (n = 3)
A man on the top of a building throws a ball at 18m/s at a 35 degree angle off a 165' building. Determine how fast the ball is moving if it strikes the ground.
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