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Compute the individual concentrations of HMR and MR in a mixture measured with absorbency 0.604 at 520 microns as well as absorbency 0.727 at 425 microns.
A foundry worker throws a hot, freshly cast piece of iron into 10 liters (10 kg) of water to cool off. The initial temperature of the water is 25 degree celcius and the initial temperature of the iron is 100 degree celsius.
For the setup in the above question, what is the value of Q, the reaction quotient, for this cell reaction at 25oC. 2Cr(s) + 3Br2(aq) --> 6Br-(aq) + 2Cr3+(aq)
Explain the pressure-temperature coexistence line for solid-vapor equilibrium sublimation is for all time less steep in a P versus T plot for a pure material than is the melting line. Define why.
Explain which one of the subsequent conditions is always true for a titration of a weak acid with a strong base. A colored indicator with apKa less than 7 should be used.
describe the basic steps involved in a gravimetric analysis. how does this procedure help us determine the identity of
Write the balanced chemical equation that represents the addition of CL2 to CH3CH=CH2.
When a 2.00 g sample of RbBr is dissolved in a calorimeter that has a total heat capacity 0.6306 kJ*K^-1, the temperature decreases by 0.420 K. Calculate the molar heat of solution of RbBr.
Explain how many milliliters of a stock HCL solution labeled specific gravity 1.19 as well as assay 38% will be needed to prepare 2L of a 1.5N HCL solution
If a 250mL solution of ethanol in water is prepared with 4mL of absolute ethanol, explain what is the concentration of ethanol in % v/v
Calculate the mass of Sodium and Zinc in grams in the following equations using ideal gas law - Determine the amount of Zinc metal in grams consumed in the reaction.
If .050 moles of HA were dissolved in 1L of water, calculate the concentration of [HA], [H30+], and [A-] in the solution at equilibrium. What is the pH? Ka=7.94 x 10^-7, equivalence point ~ 9 mL, pH at equivalence ~ 9]
What is the pH of a solution resulting from the titration of 50 mL of 0.050 M acetic acid solution, CH3COOH, with 50 mL of 0.050 M NaOH solution
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