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You need to prepare 100.0 mL of of buffer solution of pH=4.00 using 0.10M benzoic acid (pKa=4.20) and 0.160M sodium benzoate. What is the volume of each solution needed to prepare this buffer?
The solubility of a gas is 0.34 g/L at STP. What is its solubility at a pressure of 0.80 atm and the same temperature?
a solution is prepared by adding 1.60 grams of solid NaCl to 50ml of 0.100M CaCl2. what is the molarity of chlorine ion in the final solution? assume that the volume of the final solution is 50ml
Determine the identity of the diatomic gas when a boy places 59.5 gm of a diatomic gas into a ten litres container at 25 degree Celsius (measures the pressure to be 2.053 atm. )
A 10.3 mL sample of a HCl solution has a pH of 2.000. What volume of water must be added to change the pH to 4.000?
The solution to Chemistry, Are there differences between having electron-donating groups and electron-withdrawing groups
Calculate ΔHo fusion and ΔSo fusion for the substance If the pressure is increased to 120 bar, the melting temperature increases to 375.88 K. ?
Give the reaction scheme, showing the products formed (before hydrolysis), when one equivalent of ethylmagnesium bromide is treated with one equivalent of 5-hydroxy-2-pentanone
The lethal inhalation dose of sarin for a 200lb person has been determined to be 0.0015 mg. Determine the LD50 of sarin that researchers used to calculate this lethal inhalation dose.
Anton Von L. a 17th century pioneer in the use of the microscope, described the microrganisms he saw as "animalcules" whose length was "25 thousandths of an inch."
Designing and preparing aqueous buffer solution with the pH indicated.
The volume of a gas sample is 650. mL at STP. What volume will the sample occupy at 25.0°C and 950. torr pressure.
If 88 J of heat are added to a pure gold coin with a mass of 20 g, what is its temperature change? Specific heat capacity of gold is 0.128 J/g'C
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