Chemistry question and answers for July 08, 2023
- Q The relative donor effect of simple ligands can be determined bymeasuring the carbonyl stretching frequencies of their metalcarbonyl coordination complexes. Imagine you have prepared a seriesof L2-Ir(CO)Cl complexes and measured...
- Q what are the merits of normal absorbance to concentrationcalibration curve and log of absorbance versus log of concentrationcurve. Also state the comparison of the results obtained by thosemethods. which results...
- Q Describe the powder X-ray diffraction experiment. List the basiccomponents in your diagram and discuss the features/roles of eachcomponent. Include Bragg’s Law as well as coherent and incoherentscattering. What types of...
- Q You have 77.0 mL of a 0.500 M stock solution that must bediluted to 0.100 M.Assuming the volumes are additive, how much water should youadd?
- Q I'm trying to study for my General Chemistry II Exam, but I wantto make sure that I don't miss anything important! If you couldprovide your input on the following concepts,...
- Q usign the literature value of the acetic acid aand answer thefollowing questionspKa for acetic acid=4.74 , pH=4.35Group#1: Buffer pH = 4.00Group#2: Buffer pH = 4.35Group#3: Buffer pH = 4.70Group#4: Buffer...
- Q Determine the pH of a 0.45M solution ofNa2SO3.
- Q 1(a). Consider the compound with molecular formulaC4H8O2. Draw the structures ofthree isomers that match the following 1H NMRinformation.Isomer A: 1H singlet at 8.2 ppm, 2H triplet at4.2 ppm, 2H sextet...
- Q I'm trying to study for my General Chemistry II Exam, but I wantto make sure that I don't miss anything important! If you couldprovide your input on the following concepts,...
- Q what is the advantage of codistilling cloves with water asopposed to distilling without water for the steam distillation ofeugenol?
- Q Which pair of atoms will likely form a polar covalent bond?Question 5 options:Magnesium and OxygenOxygen and SulfurCarbon and SulfurCarbon and Carbon
- Q In transcription what is the open complex?
- Q Use the Heisenberg uncertainty principle to explain why does theharmonic oscillator have a zero point energy, but the rigid rotordoes not?
- Q 1. If you have 10.0g of each reactant, determine the limitingreagent and the amount of H2O produced.MnO2 (s) + H2SO4 (l) --->Mn(SO4)2 (s) + H2O (l)Can you go over each...
- Q What is “hardness†and how is it measured?
- Q Treatment of a 0.2496-g sample of impure potassium chloride withan excess of AgNO3 resulted in the formation of 0.2852 g of AgCl.Calculate the percentage of KCl in the sample?%?
- Q Use bond-energy data to calculate the enthalpy of formation foreah of the following compounds at 25 Ca) n-Octane, C8H18(g)b) Napthalene, C10H8(g)c) Formaldehyde, H2CO(g)d) Formic acid, HCOOH(g)Give the most likely reason...
- Q A beaker with 130 mL of an acetic acid buffer with a pH of 5.00is sitting on a benchtop. The total molarity of acid and conjugatebase in this buffer is...
- Q What role does structure play in the ductility of a material?Discuss the way bonding influences ductility.
- Q Describe the procedure you would follow to determine theconcentration of Vitamin C in a sample if the volume of DCPIPrequired to reach the endpoint was more than the 25-mL flask...
- Q please answer the following questionsWhat is the spin multiplicity of a Cr(III) ion in its groundelectronic state, in an octahedral ligand field?Locate the Tanabe-Sugano diagram for a d3 electron configurationin...
- Q Experiments show that the solubility of alum in 23 mL of 1.2 MKOH plus 10 mL of 9 M H2SO4 is about 1.0 g at 1.0 °C and 1.7 g...
- Q Imagine that you are in chemistry lab and need to make 1.00 L ofa solution with a pH of 2.80. You have in front of you 100 mL of7.00×10−2 M...
- Q A 111.0 mL sample of 0.105 M methylamine (CH3NH2;Kb=3.7×10−4) istitrated with 0.265 M HNO3. Calculate the pH after the addition ofeach of the following volumes of acid:22.0 mLExpress the pH...
- Q A 24 g ice cube at -76°C is placed in a lake whose temperatureis 82°C. Calculate the change in entropy of the cube-lake system asthe ice cube comes to thermal...
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