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What is the calculated precision for your measurement of the volume delivered by the pipet and what is the suggested limit of precision for a 10ml volumetric pipet? How does these two values compare?
What mass of sodium hydroxide must be added to 75.0 mL of 0.205 M acetic acid in order to create a buffer with a pH of 4.74? acetic acid Ka=1.8x10^-5
What is the most common chemical method for removing H30+ ions in aqueous solution? Net equation for the solution?
2CaH18(g) + 9O2(g) > 2Ca2(g) + 18H2O(g) Enter the coefficients for each compound in order, separated by commas. For example, 1,2,3,4 would indicate one mole of C8H18, two moles of O2, three moles of CO2, and four moles of H2O.
Determine freezing point of solution which contains .31 mol of sucrose in 175g H2O. kf=1.86 degreesC/m
Under certain conditions, the substances nitrogen and hydrogen combine to form ammonia.
While performing an activation energy experiment you accidently added 4.0 ml of water instead of 1.0ml. Explain how would this error effect the time required for the color to change? (Increase, Decrease, Un-effacted).
Problem- The carbon 14 activity in a papyrus growing along the Nile River today is 231 decay events per kilogram of carbon. if a papyrus scroll found in the ruins of ancient Egypt has a carbon 14 activity of 145 decay events per kilogram of carbon..
What mass of sucrose, in grams should be combined with 531g of water to make a solution with an osmotic pressure of 8.95atm at 315K
Question- The reaction of chloromethylcyclobutane with aluminum chloride yiel methylenecyclobutane, methylcyclobutane, and cyclopentane. Show the mechanism or mechanisms for these products. Do not draw a primary cation in these mechanisms as it is h..
If you built a standard galvanic cell using the following half-reactions, what is the maximum work that could be done by this standard cell? (deltaG=wmax)
What is the pH of a solution obtained by adding 5.00 g of HI to 295 mL of a 0.786 M solution of nitric acid?
What is the molecular formula of the compound with empirical; formula C5H8O and molar mass 336.5 g mol-1?
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