a.) The molar absorption coefficient of a substance dissolved in benzene is measured to be 802 L mol-1 cm-1 at 492 nm. Calculate what fraction of the incident light intensity of that wavelength passes through 2.97 mm of a solution of concentration 3.06 mmol/L. b.) The molar absorption coefficient of a solute at 524 nm is 103 dm3 mol-1 cm-1. When light of that wavelength passes through a 4.70 mm cell containing a solution of the solute, 59.4 per cent of the light was absorbed. What is the concentration of the solution?Ans = ______ mmol dm-3
a.) The molar absorption coefficient of a substance dissolved in benzene is measured to be 802 L mol-1 cm-1 at 492 nm. Calculate what fraction of the incident light intensity of that wavelength passes through 2.97 mm of a solution of concentration 3.06 mmol/L.
b.) The molar absorption coefficient of a solute at 524 nm is 103 dm3 mol-1 cm-1. When light of that wavelength passes through a 4.70 mm cell containing a solution of the solute, 59.4 per cent of the light was absorbed. What is the concentration of the solution?
Ans = ______ mmol dm-3
Expert Answer
Want to see the step-by-step answer?
Related Chemistry Q&A
Q: Using Hess's Law and the net ionic equations for the reaction between reaction B: Mg + 2HCl and reac...
A: The net ionic equation for part B is as follows:
Q: Asked Nov 20, 2019 To make the solution, you will add 50g of glucose and 9 grams of NaCl to 1L DI ...
A: Click to see the answer
Q: A 50.0 g sample of solid copper is heated from 25.0 o C to 2000.0 o C, melting it in the process. Us...
A: Heat capacity is a physical property of matter, defined as the amount of heat supplied to a given ma...
Q: Find the specific heat capacity of gold if 108 J of energy raises the temperature of 9.0 g from 0°C ...
A: Specific heat capacity can be calculated using by the following equation.
Q: C(s) + O2(g) -> CO2(g) CH4(g) -> C(s) + 2 H2(g) ∆Hrxn= +74.6 kJ/mol H2(g) + ½ O2(g) ->H2O(l...
A: The given reactions are
Q: Dichloromethane (CH2Cl2, Hvap= 25 kj/mol) has a vapor pressure of 330 mm Hg at 20oC. What is the nor...
A: Given,ΔH = 25 kj/molP2 = 330 mm Hg
Q: When 2.63 g of a polypeptide is dissolved in 101 mL of water, the resulting solution is found to hav...
A: Given information:Mass of polypeptide = 2.63 gVolume of water = 101 mLOsmotic pressure = 0.125 atmTe...
Q: When 0.2490 moles of methane, CH4(g) is burned in excess oxygen at thermodynamic standard state, 221...
A: 0.2490 moles of methane releases 221.74kJ, then1 mol of methane releases ‘x’
Q: Be sure to answer all parts. Use the table to calculate ΔG for the following reactions at 25°C. ...
A: (a)ΔG for the given reaction at 25°C is calculated as follows,
