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Determine the empirical formula using the following mass data. asample contains 15.136g of carbon, 1.762g of hydrogen, and 3.102 gof oxygen. please indicate which is the number of carbon atoms in the empirical formula.
Enough of a monoprotic acid is dissolved in water to produce a 0.0142 M solution. The pH of the resulting solution is 2.51. Calculate the pKa for the acid
28.98 mL of a 0.1962 mol/L EDTA solution is required to titrate a sample to the equivalence point. How many moles of divalent metal cations were in your sample?
When the reaction 2 H2S g ~ PCl3 + Cl2 is carried out at 1065 degrees celcius, Kp = 0.012. Starting with pure H2S at 1065degrees, what must the initial pressure of H2S be if the equilbrated mixture at this temperature is to contain 0.250 atm of H2..
Calculate the amount of heat liberated (in kJ) from 347 g of mercury when it cools from 85.0°C to 15.0°C.
The density of benzene at 15C is 0.8787 g/mL. Calculate the mass of 0.1500 L of benzene at this temperature.
jacob couldnt find the 6 m h2so4 so instead substituted the 6 m hno3 that was available. what change was most likely
what is the purpose of a buffer system? b)what is the purpose of NaNO2 in the buffer? c)how does the buffer react when some H3O^+ is added? d)how does the buffer react when some OH^- is added?
Assume that you have carried out a radical chlorination reaction on (R)-2- chloropentane and have isolated (in low yield) 2,4-dichloropentane.
A water pipe fills a container that measures 189 cm , 307 cm ,272 cm in 97 seconds, What is the rate of flow in the pipe in liters per minute.
In a tripeptide of Lys-Glu-Arg, would you predict that the pKa of the middle Asparate to be lower, higher, or unchanged
A 50-ml transfer pipet and a 200-ml volumetric flask (To Contain) is used to make 0.500 M and 0.125 M solutions from a stock solution of 2.000±0.005 M. Calculate the percent relative error for the three solutions if perfect technique is used. Repo..
a proton in a linear accelerator has a de broglie wavelength of 117pm. what is the speed of the
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