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A 21.54 mL volume of 0.130 M NaOH is required to reach the stoichiometric point for the titration of 25.00 mL of a 0.112 M HCl solution. Would the titration of 25.00 mL of a 0.112 M CH3COOH solution require more, less, or the same volume of the 0.130 M NaOH solution? Explain.
A 3.0 x 10-2 mg sample of a protein is dissolved in water to make 0.25 ml of solution. The osmotic pressure of the solution is 0.56 torr at 25C. What is the molar mass of the protein
calculate the minimum volume of 1.10m cuso4 solution that is required to ensure complete reaction of 1.04g of fe. since
A 500-liter tank contains air at pressure 300 kPa and temperature 500K. Calculate the mass of the air in the tank
A white solid, soluble in water and alcohol but not in toluene, does not melt when heated to 250°C. However, upon prolonged heating of the solid a colorless gas evolves and the amount of solid "shrinks". The solid appears in the list of pure subst..
an unknown mass of each of the given substances as with the final temperature is recorded as indicated 1.pyrex glass
Correct for the water vapor present in the wet dry ice experiment and compare and compare with the mean value for the dry ice experiment. Does the presence of water vapor affect the result?
Draw all of the resonance forms of 4-methoxybenzaldehyde which contribute to the reducwd electrophilicity of the aldehyde carbon relative to benzaldehyde.
a sample of riboflavin has a molar absorptivity of 1.67 x 10^3 L(mol x cm). What is the concentration of a solution with an absorbance of 0.484? The pathlength is 1.00cm.
Elliptical holes estimate the angle of entry : Cos A bullet hole in a wall at a crime scene is elliptically shaped. The loner dimension is 20 mm and the shorter dimension is 14 mm. What is the angle of entry?
Calculate the molarity and the molality of an NH3 solution made up of 37.5 g of NH3 in 70.0 g of water. The density of the solution is 0.982 g/mL.
100.0 ml of .100 M acetic Acid is placed in a flask and is titrated with .100 M sodium hydroxide. An Appropriate indicator is used. Ka for acetic acid is 1.7x10^-5. Calculate the pH in the flask at the following points of titration.
when 24 copper pennies are submerged in water the pennies displace 8.26 cm3 of water. if the combined mass of the
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