Chemistry question and answers for August 20, 2023
- Q Calculate P versus molar volume behavior of water atthree different temperatures: 300 K, 400 K and 500 K using vander Waals equation of state. Your results should show bothextrema. Using the diagrams...
- Q what is the difference between chemistry and chemicalengineering ??is it both are same ??howmuch syllabus is same as for both ??what exactly chemist do and what exactly chemical engineer do??
- Q Aqueous hydrochloric acid (HCl) reacts with solid sodiumhydroxide (NaOH) to produce aqueous sodium chloride (NaCl) andliquid water (H2O). If 12.9 g of sodium chloride is produced fromthe reaction of 19.7...
- Q define a buffer and give two examples of buffersolutions?
- Q Chlorine gas reacts with ammonia to form nitrogen gas andammonium chloride. If 70 g of chlorine and 50 g of ammonia form 6.2grams of nitrogen, what is the percent yield...
- Q Part 1:TrialInitial pHFinal pHFinal volume after titrationInitial Buret ReadingTotal Volume Titrated#13.34 pH4.35 pH47.50 mL50 mL2.50 mL#23.39 pH4.20 pH47.90 mL50 mL2.10 mL#33.39 pH4.40 pH47.00 mL50 mL3.00 mLPart 2:TrialInitial pHFinal pHFinal volume...
- Q Provide a brief introduction/background of the moleculeOseltamivir (Tamiflu) and include a briefdescription of what the molecule is and how the molecule is used.Discuss how does the structure plays a role...
- Q Azulene is a beautiful blue hydrocarbon consisting of only C andH atoms. If 0.106 g of the compound is burned in oxygen, 0.364 g ofCO2 and 0.0596 g of H2O...
- Q A galvanic cell consists of a iron electrode in 1 M Fe(NO3)2 anda copper electrode in 1 M Cu(NO3)2. What is the equilibriumconstant for this reaction at 25oC? Enter you...
- Q For Kl and lithium phosphate give the cation name and symbol,anion name and symbol, and chemical formula.Which is an impossible ectron configuration?1s22s21s32s22p41s22s22p41s22s22p43s11s22s22p43s2
- Q A. Beta emission is associated with: (SELECT ALL THAT APPLY)a, b, c, d, e, f, gB. Electron-capture is associated with: (ALL THAT APPLY)a, b, c, d, e, f, gC. Alpha...
- Q Calculate the wavelengths of the following objects:a muon (a subatomic particle with a mass of 1.884 × 10–25 g)traveling at 320.0 m/san electron (me = 9.10939 × 10–28 g) moving...
- Q Q1/50 grams of an unknown metal at a temperature of 100 ºC isplaced in a calorimeter that holds 25.0 grams of cold water (10ºC). After 10 minutes, the temperature of...
- Q Avogadro’s Law. Now imagine that you open the jar and pull theballoon out. Now imagine that you put 3.00 g of the same gas inanother balloon at the same pressure...
- Q Part A. How many grams of NH3 can be produced from 4.78 mol ofN2 and excess H2.Part B. How many grams of H2 are needed to produce 10.52 g ofNH3?Part...
- Q Would your calculated percent NaNo2 by mass by largerthan, smaller than or unchanged from the correct value as a resultof the following mistakes? Show your reasoning or calculations whenappropriate.A) You...
- Q 1. Carbon monoxide (CO) normally binds tightly to heme (aq). Howis this decreased in Mb? What are the relative CO vs. O2 bindingstrengths in each case?2. Explain the role of...
- Q Use what you learned about [H3O(+)] and pH formulas to solve thefollowing problemCalculate the pH of a (1.99x10^-1) M solution of Na2S03 (Kb1 =1.56E-7, Kb2 = 5.88E-13)
- Q a 4.4766g sample of petroleum product was burned in atube furnace, and the SO2 produced was collected in 3% H202.reaction:SO2 + H2O2 -> H2SO4A 25ml portion of 0.00923 M NaOH...
- Q LAB Reaction RatesObjectives• Evaluate the effect of concentration on therate of a chemical reaction. ν• Examine the effect of temperature on the rateof a chemical reaction.Background: Many people believe that...
- Q Part AAspirin (acetylsalicylic acid, C9H8O4) is a weak monoproticacid. To determine its acid-dissociation constant, a studentdissolved 2.00 g of aspirin in 0.600 L of water and measured thepH. What was...
- Q Predict whether aqueous solutions of the salts will be acidic,basic or neutral. Please explain why, so that I can learn themechanism. Thank you!Acidic BasicNeutral  (CH3)2NH2NO3Acidic BasicNeutral  C6H5NH3BrAcidic Basic Neutral  CaBr2Acidic Basic Neutral  CsF3CCOOAcidic Basic...
- Q SO3(g) can be produced by this two step process:1.) 2FeS2 + 1 1/2 O2 = Fe2O3 + 4SO22.) SO2 + 1/2 O2 = So3How many grams of SO3 can be...
- Q Indicate which vibrational modes will be IR-active andRaman-active. Briefly explain.Acetylene, symmetric triple bond stretchBenzene, symmetric ring CC stretchCarbon dioxide, asymmetric C=O stretchtrans 1,2 dibromoethene, ï®sym C=C
- Q 3. Chemical reactions and equilibrium constants(a) An alternative way of writing the reaction for thedissolution of CdCO3(s) is to form the species HCO3- rather thanCO32-.Write a balanced chemical reaction for...
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