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The resolution computed for the TLC separaion of a two component mixture is determined to be equal to 2.0. Does this represent good separation or not? Define
The compound known as butylated hydroxytoluene, abbreviated as BHT, contains carbon, hyrdrogen, and oxygen. A 2.626 g sample of BHT was combusted in an oxygen rich environment to produce 7.867g of
a freezer is used to freeze 3.0 l of water completely into ice. the water and the freezer remain at a constant
Seawater has a density of 1.025 g/mL. If seawater is about 1.45% Cl by mass, how much 0.100M silver nitrate is needed to titrate a 5.00 mL sample
a 10.9 mol sample of argon gas is maintained in a 0.787 l container at 298 k. what is the pressure in atm calculated
A solution is made by mixing 12.0g of NaOH and 70.0mL of 0.200m HNO3. Calculate the concentration of OH- ion remaining in the solution.
Determine the concentrations of the following ionic species present in a 0.333 M solution of the diprotic acid H2SO3. For H2SO3, Ka1 = 1.4E-2, Ka2 = 6.3E-8.
At 30°C, by how much is a reaction's activation energy decreased by the addition of a catalyst if the catalyst triples the reaction rate?
Calculate the mass of water produced when 9.11 g of butane reacts with excess oxygen. Express the mass of water numerically in grams.
A solution contains 11.00 g of unknown compound dissolved in 50.0 mL of water. (Assume a density of 1.00 g/mL for water.) The freezing point of the solution is -6.59 *C. The mass percent composition of the compound is 38.70% C , 9.74% H , and the ..
In an Fe and Cr voltaic cell where the Fe is in Fe(NO3)2 and the Cr is in Cr(NO3)3; calculate the cell potential at 25 C if the initial concentration in the half cells are as follows [Cr 3+] = 2.45M and [Fe 2+] = .75 M
Compute the molar mass of the bio molecule. For carbon tetrachloride, the boiling point constant is 5.03C.kg/mol. and the boiling point of pure carbon tetrachloride is76.50C.
The annual production of zinc sulfide (ZnS) is 4.5 104 tons. Estimate the number of tons of SO2 produced by roasting it to extract zinc metal
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