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The assay of a soda ash sample was reported as 65.21% Na2CO3. Express the carbonate content in terms of percent CO2 and percent carbonate ion.
Calculate the pH when 3.06 g of NaClO is added to 57.2 mL of 0.50 M HClO. Ignore any changes in volume.
a gas mixture of a amp b containing 1.5 mole a and 98.5 mole b is to be contacted by a pure liquid in a packed
When a 8.37-g mixture of methane, CH4, and ethane, C2H6, is burned in oxygen at constant pressure, 445.8 kJ of heat is liberated. What is the percentage by mass of CH4 in the mixture
Calculate the standard free energy change for the combustion of methane at 25oC. Assume that all reactants and products are gases. Provide an answer correct to 3 significant figures.
liquid nitrogen has a density of 0.807 g/ml at -195.8 C, if 1.00 L of N2 is allowed to warm to 25 C at a pressure
a 1.00 l buffer solution is 0.250 m in hf and 0.250 m in naf. calculate the ph of the solution after the addition of
Draw all the structural isomers for the molecular formula C4H9Br. Be careful not to draw any structures by crossing one line over another; the system needs to know where you intend connections to be between atoms. I came up with 4 different struct..
Describe the titration curve for the titration of a weak base with a strong acid. Indicate the chemical reaction, the points that correspond to the equivalence point, the pH = pKa and the region with maximum buffering.
a sample of neon gas is held in a rigid 1.814l container with a pressure of 1.273atm at 25 c. 3.193g of an unknown gas
The EQ established when 2 moles of muck (s) are added to a 1 L solution of 3 moles of slop dissolved in slime (l) producing 1 mole of ick (g) and 2 moles of dissolved goo if the reaction goes the completion.
In photography, unexposed silver bromide is removed from film by soaking the film in a solution of sodium thiosulfate, Na2S2O3. Silver ion forms a soluble complex with thiosulfate ion
when NaOH is added to this solution, a white precipitate forms. Using an equation, provide the identity of the white precipitate and explain its formation.
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