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Question- A laboratory manager wants to prepare 500.00 mL of a buffer with a pH of 5.280 from equimolar solutions of CH3CO2H (Ka = 1.800e-5) and LiCH3CO2. What volume of the CH3CO2H solution would be required?
State your answer by means of three significant figures.
The potential energy of water at the top of a dam or waterfall is converted into heat when the water dashes against rocks at the bottom. The potential energy of the water at the top is equal to Ep=mgh, where m is the mass of the water, g is the ac..
A certain liquid has a vapor pressure of 92.0 Torr at 23.0 °C and 400.0 Torr at 45.0 °C. Calculate the value of ?H°vap for this liquid.
The wedge is connected to a pendulum and swings through an arc and hits the sample at the bottom of the arc. The sample breaks and the wedge continues its swing to a height of 0.5 m. The energy required to break the sample is closest to
What are the simple sugars of lactose, maltose and sucrose and why are some people lactose intolerant
a) A particular chip snack food is composed of 11% protein, 10.% fat, and the rest carbohydrate. What percentage of the calorie content of this food is fat in%? b) How many grams of protein provide the same fuel value as 40. g of fat in g?
What are the major components of the mixture after acid-base equilibriums have been established if a) half a mol, b) 2 mol of sulfuric acid (H2SO4) are added to a solution of one mol ketone
What mass of helium was placed in balloon. What altitude does the balloon reach
If the work function of a metal is 3.51 eV, what is the maximum wavelength of light that can be used to observe the photoelectric effect
Why did the discrepancy between experiments and classical theory for blackbody radiation occur at high and not low frequencies
what is the empirical formula of a compund with the molecular formula n2
How many joules of energy must be transferred from a cup of coffee to your body if the temperature of the coffee drops drom 60.0 degrees Celsius to 37.0 degrees Celsius (normal body temp.)
What is the proper name of the intramolecular reactions that occur in amino acids to form Zwitterions?
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