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Proper procedure for the preparation and standardization of ~300 mL of ~1 M NaOH solution against potassium hydrogen phthalate i.e., this is an acid/base titration, It is desirable for the acid and base to be the EQUIVALENT strength/concentration, The burets only hold ~ 50 mL, so you need to ensure your endpoint occurs within that volume.
a compound is 40.0 c 6.70 h and 53.3 o by mass. assume that we have a 100.- g sample of this compound. what are the
When 1 of a fuel is burned at constant pressure, it produces 3452 of heat and does 13 of work. What is the value of delta H for the combustion of the fuel?
Herbigon will be soluble at the concentration needed to kill weeds. What pH must the solution have to yield a solution in which the concentration of X+ is 6.00×10?3M ? The pKa of acetic acid is 4.76.
Choose the selection which correctly characterizes all three of the following substances in terms of whether they are polar or nonpolar
CO2 has a mol wt of 44 Da. 5.0 micro liters of CO2 is added to 525 mL of air. The pm of CO2 by volume and weight is/are?
Find a) the average speed, b) the root-mean-square speed, and c) the most probable speed of these particles. Explain your results
The sudden opening of the epiglottis and vocal cords releases this air explosively. Just prior to this release, what is the approximate pressure of the gas inside the lungs?
The first-order rate constant for the decomposition of N2O5, 2N2O5 --> 4NO2 + O2 at 70 degrees C is 6.82 * 10 ^-3 . Suppose we start with 2.90×10?2 of in a volume of 1.7 L. A)
calculate the amount of 0.020 m kmno4 solution required to completely oxidize 37.99 ml of .100 m feso4 in an acidic
For the cell reaction Cu(s) + 2Fe3+ ----> 2Fe2+ + Cu2+ Ecell=0.33V What is the value of the equilibrium constant at 25C for the cell reaction
How many kilojoules are needed to raise the temperature of 125 g of copper from 22 deg C to 325 deg C? My book shows copper at 0.385 j/g. Here is what I have done so far but I am not sure? 125 g x 303 deg C x 0.385 j = 14600. j 14600/1000 = Conver..
In combustion analysis, 2.00mg of vitamin C yielded 3.00mg CO2 and 0.816mg H2o. From mass spectrometry, it was found that the molecular weight of vitamin C is 176amu. Determine the mass composition of vitamin C, its empirical formula, and its molecul..
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