Chemistry question and answers for September 03, 2023
- Q Consider the following reaction:HC2H3O2(aq)+H2O(l)⇌H3O+(aq)+C2H3O−2(aq)Kc=1.8×10−5 at 25∘CIf a solution initially contains 0.180 M HC2H3O2H, what is theequilibrium concentration of H3O+ at 25∘C∘C?
- Q What are referred to as ‘particles’ in cryo-EM of proteins?
- Q Youare a lawyer in the courtroom defending your client who was accusedof driving under the influence of methamphetamines. A forensicscientist testified in court with the urine analysis of your clientpost...
- Q A mixture initially contains A, B, and C in the followingconcentrations: [A] = 0.400M , [B] = 0.700M , and[C] = 0.700M . The following reaction occurs andequilibrium is established:A+2B?CAt...
- Q if an ATP molecule is hydrolyzed (by two water molecules) allthe way to AMP (and two Pi) in two steps, how many total kcal/molof energy could be released? Explain.Using this...
- Q 1. Net ionic equationCr(OH)3+ HO2+-----given-----(CrO4)2+ +HO-2. Cdâ„Cd2+(0.060mol/l) // Ag / Ag+(2.50mol/l)#a)Overallreactionb)Cell potentialc)Which one is the positive meta
- Q 1.a) Account for the fact that there are four different types of Hatoms (four non-equivalent H types) in propene.b) Explain why the NMR spectrum of cyclohexane,below, at roomtemperature gives one...
- Q Can someone explain to me why does increasing the electrolyteconcentration can increase the electroplating rate/or metaldeposit...? Take copper sulphate as an example. Better explanationwith pics...And just don't go too far...
- Q Does anyone know when we use heck reaction or suzuki reaction? Icame across some example but not sure when to use each reaction? Ithought they are the same?
- Q What is the [OH-] of a 1x10-3 M solution of NH4Cl?
- Q Determine the equation for the best straight line for thecalibration curve from the following set ofabsorbance/concentration (mg/100 mL) data: 0.96/0.0, 0.83/10,0.66/20, 0.49/30, 0.36/40, 0, 19/50, 0.08/60.What method did you use...
- Q 3. ADP-Glc pyrophosphorylase (AGPase) is a key enzyme in thebiosynthesis of starch. Using AGPase as an example, describe howthe regulation of this one enzyme can control the overall flux ofcarbon...
- Q A student creates a buffer mixing 50. mL of 1.0 M Acetic Acid with25 mL of 1.0 M Sodium Hydroxide. The buffer is then mixed with 10.mL of 2.0 M...
- Q A chemistry student needs to standardize a fresh solution ofsodium hydroxide. She carefully weights out 305.mg of oxalicacid(H2C2O4), a diprotic acid that can be purchased inexpensivelyin high purity, and dissolves...
- Q Explain the energy changes at the molecular level whenliquid acetone is conferred to vapor at it's boilingpoint
- Q Given the thermodynamic data in the table below, calculate theequilibrium constant (at 298 K) for the reaction:Â Â Â Â Â Â Â Â Â Â Â 2SO2 (g) + O2 (g) Ã 2SO3 (g)Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
- Q Consider three gas connected gas containers as shown in thefigure below.Consider three gas connected gas containers as shown in thefigure below.CO2 (g) P = 2.13, V = 1.50LH2(g) P =...
- Q When either cis- or trans- 2 bromocyclohexanol is reacted withHBr, only the trans- 1,2- dibromocyclohexane is formed.Explain.
- Q The mass of a lethal gas (HCN) is measured ot be 5.50 lbs. Ifthis gas is incinerated in a high temperature oven with a volume of750 cubic feet determine the...
- Q The rate of a certain reaction was studied at varioustemperatures. The table shows temperature (T) and rate constant (k)data collected during the experiments. Plot the data to answer thequestions.What is...
- Q Following dilution of a concentrated solution, the absorbance isdetermined to be 3.935 on our BioTek Plate Reader. What, if any,changes should be made to this experiment?a The sample should be...
- Q List a solution that you have contact with. Choose onethat has not been discussed by a classmate. Give the composition ofthe solution; specify the units used to express the concentration.What...
- Q A mixture of propane and butane is burned with air. Partialanalysis of the stack gas produces the following dry-basis volumepercentages: 0.0527% C3H8, 0.0527% C4H10, 1.48% CO, and 7.12% CO2.The stack...
- Q Ammonium Nitrate+Potassium sulfidea.Write the balance equationb.Total ionic equationc .Net equation
- Q compare these different methods for determining theconcentration of copper(II): titration, quantitative precipitation,and spectroscopy and discuss the applicability (under whatconditions would each be preferable) of each method.
Get Answers to Unlimited Questions
Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!
Membership Benefits:
- Unlimited Question Access with detailed Answers
- Zin AI - 3 Million Words
- 10 Dall-E 3 Images
- 20 Plot Generations
- Conversation with Dialogue Memory
- No Ads, Ever!
- Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!