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Problem- Calculate the volumes of 0.20M acetic acid, 0.20M sodium acetate, and pure water needed to make 20.00 mL of a buffer having pH=5.00. Repeat analogous, seperate calculations for buffers having pH=4.00 and pH=6.00. In each case determine the amounts of the acid and base that require the minimum volume of added water to reach a total volume of 20.00 mL.
Explain the each and every step in detail for help
a piece of metal alloy with a mass of 114g was placed into a graduated cylinder that contained 25.ml of water raising
A ground-state H atom absorbs a photon of wavelength 94.91 nm, and its electron attains a higher energy level. The atom then emits two photons: one of wavelength 1281 nm to reach an intermediate level, and a second to return to the ground state.
Hydrogen gas (H2) and oxygen gas (O2) are the products when an aqueous acidic solution is electrolyzed; each mol of water gives one mol of H2 and half a mol of O2.
Calculate the mass of magnesium hydroxide formed in the reaction of 2.0 L of a 5.8 M solution of sodium hydroxide with excess magnesium nitrate.
Using the same sample of gas ( P1= 695 , T2 = 27 ), we wish to change the pressure to 6950 with no accompanying change in volume or amount of gas. What temperature T2, in Celsius, is needed to reach this pressure
A student is given a soluble sodium salt containing one of eight possible anions (negative ions): acetate, chloride, bromide, iodide, sulfide, sulfate, and phosphate. The student adds some BaCl2 solution to the salt solution. A precipitate forms. ..
A nonvolatile organic compound Z was used to make up two solutions, Solution A contains 5.00 g of Z dissolved in 100 g of water, and Solution B contains 2.31 g of Z dissolved in 100 g of benzene.
A 28.0-g sample of water at 260. K is mixed with 51.0 g water at 310. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings
Explain what proportions of hexane and heptane by mass, must be mixed in order to achieve the greatest free energy of mixing delta G mix
If the copper is drawn into wire whose diameter is 7.50 , how many feet of copper can be obtained from the ingot? The density of copper is 8.94
Assume that the kinetic energy of a 1500kg car moving at 95 km/h can be converted entirely into heat. What amount of water could be heated from 20 C to 50 C by the car's energy?
which of the following is a property of an ionic compound?softmalleablelow boiling pointhigh melting
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