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A buffer is created by combining 140.0mL of 0.25 M HCHO2 with 70.0ml of 0.20M NaOH. Explain what is the pH?
Calculate the mass of solid need to make the solution and then prepare the solutions. Explain the steps you took in making the solution.
1-buytyl bisulfate may serve as teh precursor to an ether and an alkene as well as the desired 1-bromobutane. provide
Titanium (f=6.94 x 10-19 J) and silicon (f=7.77 x 10-19 J) surfaces are irradiated with UV radiation with a wavelength of 233 nm. Explain what is the wavelength (nm) of the electrons emitted by the titanium surface
excess aqueous nai was added to 50ml of aqueous cuno3 solution and 19.81g of cui precipitate was formed. what was the
write an equat ion which, if solved,would give the average scalar momentum, , of molecules of an equilibrium gas.
The solubility product of PbBr2 is 8.9x10^-6. Determine the molar solubility a) in pure water, b) in 0.20M KBr solution, c) in 0.20M Pb(NO3)2 solution.
The bismuth-cadmium phase diagram is of interest in metallurgy, and its general form can be estimated from expressions for the depression of freezing point
The molar heat capacity of silver is 25.35J/mol C. How much energy would it take to raise the temperature of 9.70g of silver by 19.2C
A large number of polycyclic benzenoid aromatic hydrocarbons are known. One of these, benz/a/pyrene, is a powerful carcinogen found in tobacco smoke. Draw the structure of this hydrocarbon. Can you suggest other sources where this material might b..
Compound A --> Compound B if you start with 10.0 mL of Compound A and obtain 9.0 g of Compound B. Density of Compound A = 0.75 g/mL MW of Compound A = 150. g/mol MW Compound B = 300.
what is the radius of the cross section of a cylinder that has a volume of 644.0 m3 and a height of 12.6 m?
Calculate the density of hydrogen bromide gas (in g/L) at 733 mm Hg and 47 degrees Celsius
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