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Problem- Draw two likely structures for the geometrical isomers of diethylammonium tetrachlorocuprate (II).
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Compute the pH of the solution made by adding 0.50 mol of HOBr and 0.30 mol of KOBr to 1.00 L of water. If The value of Ka for HOBr is 2.0x10-9.
Give the balanced chemical equation (including phases) that describes the combustion of butene,
The EPA limit for lead in the water supply is 15 parts per billion by mass. Calculate the number of lead ions present in 1.00kg of water that is at the EPA limit for lead.
The problem states that 4.36g of an unknown alkali metal hydroxide is dissolved into 100.0 ml of water. It is then titrated with 2.50 M HCl using an acid-base indicator. The equivalence point is 17.0 ml of HCl.
A 20.0-mL sample of 0.25 M HNO3 is titrated with 0.15 M Na OH. What is the pH of the solution after 30.0 mL of NaOH have been added to the acid?
Explain when 1.40 moles of Br2 are put in a 0.900-L flask 1.00 percent undergoes dissociation. Compute the equilibrium constant Kc for the reaction.
We have learned that valence bond theory helps us to predict s and p bonding in molecules. All of the following statements about molecular bonding are true, but which statement best summarizes the most basic premise for bonding in a molecule?
A sample of air at STP is determined to contain 77% nitrogen, 21% oxygen, 0.5% water vapor, 0.5% carbon dioxide, and 1% of inert gases etc. Explain what is the partial pressure of water vapor in this sample
calculate the volume of water needed to dilute the anti-freeze from 0.20M in 0.260 litres to 0.13M.
3 5L flasks fixed with pressure gauges and small valves, each contain 4 g of gas at 273K. Flask A has H2, B has He and C has CH4. Place in order of pressure
How much energy is released when 32.4 g of water freezes? The heat of fusion for water is 6.02 kJ/mol
What is the concentration of P retained in the soil (in mg P/kg)? What is the concentration of PO4 retained by the soil (in mg PO4/kg)?
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