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How many grams of sodium formate, NaCHO2, would have to be dissolved in 1.2 L of 0.39 M formic acid (pKa 3.74) to make the solution a buffer for pH 3.71?
Give the structure of the sodium salt of methyl salicylate and in the second part of the experiment, what is the structure of the anionic form of salicylic acid before it is acidified with the dilute sulphuric acid?
A second worker approaches to within 5 meters behind a shield that attenuates 60% and remains there for 20.0 minutes. What is the ration between the absorbed doses for the two workers
a metal sample weighing 37.6 grams, which has been heated to a temp of 100 degree cin boling water was placed in 48.6g of waterin a calorimeter. The inital temp of the water was 25.2 degree c.
The air pollutant NO is produced in automobile engines because of the high-temperature reaction below. If the initial concentrations of N2 and O2 at 1000 K are both 1 M
What would you expect to happen to the sizes of these bubbles if they were connected with a tube without bursting either bubble?
A sector instrument is designed to operate with a radius of 30.0 cm and an accelerating voltage of 3000 V. Calculate the magnetic field necessary to focus the M positive ion of methane (CH^4)
What would be the synthesis for my chaclone synthesis if 3-nitrobenzaldehyde were to react with 4-bromoactylphenone
he reduction table in your notes, calculate the standard cell potential for the following reactions. 2 Al3+(aq) + 3 Pb(s) 2 Al(s) + 3 Pb2+(aq)
a student placed 12.5 of glucose in a volumetric flask added enough water to dissolve the glucose by swirling then
The specific heat of fat is 0.45 cal/(g C) and the density of fat is 0.94g/cm^3 . How much energy (in calories) is needed to heat 10cm^3 of fat from room temperature (25 C) to its melting point (35 C).
container a with 150ml contains a gas with an unknown pressure. container b with volume 250ml contains a gas under 628
4.5 g CH4(g) occupies 12.7L at 310K. Calculate the work, heat, energy, and enthalphy change upon expansion by 3.3L @p=constant. please show the equations used.
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