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which of the water samples that you tested had the highest calcium concentration? does this correlate with the total dissolved solids results you obtained? which of your water the most pure? was this what you would have predicted before the laboratory session? why or why not?
The solubility of a gas in H2O at a temperature of 25 °C and a pressure of 1.2 atm is 0.042 M. What will the solubility of the same gas be in H2O at the same temperature at 3.4 atm.
Assume that the aluminum atoms can be represented as spheres, as shown in the drawing (Part C figure) . If each {rm Al} atom has a radius of 1.43 {rm AA}, what is the length of a side of the unit cell?
Calculate the pressure that must be applied in order to increase its density by 0.08 percent.
Give the quantitative species inventory for the system which ultimately results from mixing 2.55mols Cl2, 1.20mols Br2, 1.25mols I2,
universe on assumption that heat capacities are independent of temperature
At 25 degrees celsius at 0.50 g sample of polyisobutylene (a polymer used in synthetic rubber) in 100.0 ml of benzene solution has an osmotic pressure that supports a 5.1mm column of solution (d = 0.88 g/mL). What is the molar mass of the polyisob..
Calculate the equilibrium partial pressure of bromine gas. No approximations can be made because the equilibrium constant is too large.
Styrene, phenylethene, is treated with H3PO4, an acid whose conjugate base is a poor nucleophile.
In a coffee-cup calorimeter, 1.50 g of NH4NO3 is mixed with 76.0 g of water at an initial temperature of 25.00°C. After dissolution of the salt, the final temperature of the calorimeter contents is 23.65°C.
A solution 14.3 % (by mass) HCl. The density of the solution is 1.08 g/mL. What is the molarity of the solution
E85 fuel is a mixture of ethanol and gasoline. What mass in kilograms of E85 (d=0.758g/mL) can be contained in a 14.0 L gallon tank.
At an altitude of 45.00 km, the average atmospheric temperature is essentially 0 degrees C. What is the average number of air molecules per cubic centimeter of air at this altitude?
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