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The absorbance for a 0.0035 M sample solution gives increase to an absorbance of 0.15 at 350 nm on a spectrophotometer with a 1.0-cm path length cell. Find out the molar absorptivity of the sample at 350 nm.
Describe how you would prepare 500 ml of a 0.200 M solution of HCl from a concentrated dolution of 12.0 M HCl
A 7.75-L container holds a mixture of two gases at 37 °C. The partial pressures of gas A and gas B, respectively, are 0.209 atm and 0.735 atm. If 0.130 mol a third gas is added with no change in volume or temperature, what will the total pressure ..
The air is cooled as the water evaporates. How much water must be evaporated to cool the air in a room of dimensions 4.0 m x 5.0 m x 3.0 m by 20. C? Assume that the enthalpy of vaporization of water is the same as it is at 25 c.
a total of 17.34 ml of 0.122 m h2o2 titrant is required to completely neutralize 25.00 ml of an unknown concentration
the rate constant for the elementary reaction is 7.1x109mmiddots at 25degc. 2 nog o2g 2 no2gnbspwhat is the rate
The liquid rate used is twice the minimum, the equilibrium relationship can be represented as yA=9.95 xA then determine what is HOG, operating line relationship, NOG and packed height of the column?
The overall Kf for the complex ion Ag(NH3)2+ is 1.7x10^7. Ksp for AgI is 1.5x10-16. What is the molar solubility of AgI in an aqueous NH3 solution (Kb=1.8x10-5) with a pH of 12
If 19.50g of CaCl2 are dissolved in enough water to give 250ml of solution, what will be the molar concentration if the Cl- ion in this solution
The elctrolysis of an aqueous sodium chloride solution using inert electrodes produces gaseous chlorine at one elctrode. At the other electrode gaseous hydrogen is produced and the solution becomes basic around the elctrode.
Calculate the viscosity average and number average molecular weights of polyvinyl alcohol given the molar mass of cleaved and uncleaved polymer solution.
Instant cold packs, often used to ice athletic injuries on the field, contain ammonium nitrate and water separated by a thin plastic divider. When the divider is broken
Calculate the pressure that must be applied in order to increase its density by 0.08 percent.
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