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Question- A chemist needs a buffer with a pH 3.50. How many mL of pure formic acid (density=1.220 g/mL) must be added to 325 mL of .0857 M NaOH solution to obtain such a buffer?
Illustrate structures to prove your interpretation.
The combustion of pentane with oxygen is a well known process. Write a balanced equation for the reaction of pentane, C5H12, with oxygen, O2, forming the products carbon dioxide, CO2, and water, H2O. What mass of carbon dioxide will be produced by..
Calculate the PH fat equivalence point in titrating 0.100 M solutions of each of the following with 0.080M NaOH;( a) chlorous acid (hclo2), (b)benzoic acid(c6h5cooh) will give more points for all the steps.
the volume of a gas dropped from 300 ml to 280 ml when the original pressure of 200 torr was increased. what was the
Calculate the freezing point and the boiling point of each of the following aqueous solutions. (Assume complete dissociation.) (a) 0.032 m MgCl2
halothane c2hf3brcl is a commonly used gaseous anesthesia. one suggested dosage is 3.0 halothane by volume. what is the
question calculate the volume of dry co2 produced at body temperature 37 degree celsius and 0.950 atm when 25.0 g of
What mass of CCl2F2 substance must evaporate in order to freeze 200 of water initially at 15 degrees celsius? (The heat of fusion of water is 334 J/g the specific heat of water is 4.18 J/gK .)
a second reaction has a standard Gibbs free energy of -55 kJ/mol. What is the ratio of their equilibrium constants at 300 K?
How many milliliters of 0.105 M HCl are needed to completely neutralize 60.0 mL of 0.108 M Ba(OH)2 solution?
Then the gas is cooled at a constant volume of 25.0L back to its original temperature. Then it contracts back at a constant tempurature to its original volume. Find the total heat flow for the entire process.
Calculate the pH of 1.00 L of the buffer 1.04 M CH3COONa/ 0.91 M CH3COOH before and after the addition of the following species (Assume there is no change in volume)
A pickle-packing plant produces and discharges a waste brine solution with a salinity of 13,000 mg/L NaCl, at a rate of 400 L/min, discharged into a stream with a flow rate above the discharge of 5 million L/d and a salinity of 20 mg/L
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