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A non-electrolyte sample with a mass of 2.00 g is dissolved in 100 g H2O. If the resulting solution freezes at -0.186ºC, what is the molar mass in of the compound? (Kf for water = 1.86ºC·c/m)
He intends to have the pH set to 10.0 . He uses acetic acid /acetate as the buffer system. Is the oH buffered in the desired range. How would you improve on Joe experiment design
calculate the volume in L occupied by 0.345moles of a sample of h2(g) at a pressure of 3.90 atm and a temperature of -163C.
there are 3 main light components in turbid light mediaballistic photons snake photons and diffuse component. why
The intermediate from Step 1 reacts in Step 2 to form a compound with two sp3 hybridized atoms. Overall: One bond is formed and one bond is broken. One of the products has a bent molecular geometry and smells like rotten eggs.
Which of the following would be expected to have a bent (angular) shape?
Why is nitroacetic acid O2NCH2COOH pka=1.68 a much stronger acid than acetic acid CH3COOH pka=4.76
Draw the procedure you expect to use to find out whether or not copper is present in your sample. Make sure to comprise the amounts of materials and all items you expect to use
consider a 1 liter rigid vessel that is initially half full of water and half full of air at room temperature and 5
Calculate the specific enthalpy change associated with this process.
One mole of an ideal gas is subjected to the changes below. Calculate the change in temperature for each case
At the endpoint of a titration of a weak acid HA (nicotinic acid) with NaOH (100 mL each, 0.100 M), the pH is 8.78. What is the apparent Ka of the acid
A 122 piece of metal is heated to 285 and dropped into 84.0 of water at 26. If the final temperature of the water and metal is 58.3, what is the specific heat of the metal.
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