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Compute the [H ] and pH of a 0.0020 M hydrazoic acid solution. Remind that the Ka of hydrazoic acid is 2.2 × 10-5. Utilize the method of successive approximations.
a solution containing sodium fluoride is mixed with one containing calcium nitrate to form a solution that is 0.015m
The thermal decomposition of acetaldehyde, CH3CHO->CH4+ CO, is a second- order reaction. the following data were obtained at 518 degrees C.
How much heat in kilojoules is evolved or absorbed in the reaction of 244.0g of calcium oxide with enough carbon to produce calcium carbide?
What volume of liquid ethanol (in L) (d = 0.785 g/mL) would need to evaporate to provide an equilibrium vapour pressure (59 mm Hg at 25oC) in a room with dimensions 2.81 m x 2.43 m x 2.50 m
List the order of nucleotides in the DNA strand complementary to the section with the sequence [TTAGACGAC]. (2) How many codons does this represent?
Calculate the mass in grams of hydrogen chloride produced when 5.05L of molecular hydrogen measured at STP reacts with an excess of molecular chlorine gas.
Substituents on an aromatic ring can have several effects on electrophilic aromatic substitution reactions. Substituents can activate or deactivate the ring to substitution,
a mixture of 3.78 moles of n2 and 3.78 moles of o2 is placed in a 1.00 l container at 448 degc and allowed to reach
What is the pH of a solution created by dissolving 15.0 g of monosodium phosphate NaH2PO4 and 12.0 g of disodium hydrogen phosphate Na2HPO4. The Ka is 6.2*10^-8. How much .2 M NAOH is needed to raise the pH of the solution by .04 units
The analysis of oil from a reciprocation aircraft engine showed a copper content of 8.53 μg Cu/mL. Calculate the 90% and 99% confidence intervals of the results if it was based on (a) a single analysis, (b) the mean of four analyses, (c) the mean ..
The abundance of deuterium in water is 0.0150%. Howmany moles of water would be required to obtain 0.0760 moles of deuterium
Draw all substitution products for the reaction of 1-iodo-2-methylcyclohexane with methanol (the products should all be ethers).
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