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Assume that you pipet twenty milliliters of 0.350 M CaCl2 into a fifty milliliter volumetric flask and add DI water to the calibration mark. What is the molarity of this diluted solution?
Label each of the following reactions as exothermic or endothermic ("exo" or "endo"), and according to whether work is done on or by the system, or no work is done at all ("on", "by" or "none")
Calculate the standard free energy change for the process N2O5(s)-->N2O5(g) at 25 0C if Vapor pressure of N2O5 at 7.5 degrees C is 100mmHg, and the solid sublimes at a pressure of 1.00 atm at 32.4 0C.
Write the equation for this reaction, labeling the acid, base, conjugate acid, and conjugate base
What is the net redox reaction that occurs when Cu comes into contact with acidic K2Cr2O7? (b) What is the E cell for the reaction
Write out a detailed procedure for determining the enthalpy of reaction between citric acid (H3Cit) and sodiumhydroxide (NaOH). Note that the neutralization reaction is
the record low sea-level barometric pressure ever recorded is 25.8 in. of mercury. at what altitude in the standard
The molar heat capacity of silver is 25.35 J/mol * C. How much energy would it take to raise the temperature of 8.60 g of silver by 11.1 C?
human growth hormone in 25.0 mL of solution has an osmotic pressure of 0.109 torr at 25.0°C. What is the molar mass of human growth hormone?
10 mL of 0.1 M NaOH is added to 50 mL of 0.1 M of the hypothetical acid HA. write the chemical equation and calculate the molarity of NaA and HA in the final solution.
water expands when it freezes. How much work is done by 100g of water expanding as it freezes at 0 degrees Celsius and pushes back the wall of a pipe that exerts 1070 atm of pressure?
50.0 mL of 1.0 M HCl at 25.0 oC were mixed with 50.0 mL of 1.0 M NaOH also at 25.0 oC in a styrofoam cup calorimeter. After the mixing process, the thermometer reading was at 31.9 oC.
consider the titration of 40.00 ml of 0.500 m hco2h with 0.500 m naoha calculate the ph after the following volumes of
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