Chemistry question and answers for September 30, 2023
- Q Would the molecules PO33-,NO2F, and BrF3 bond to Rh+ and what atomwould serve as the donor atom? Which would be the most favorableand why?
- Q How many molecules of ATP are produced for each unit of GTPformed in the citric acid cycle?
- Q A solution contains Al 3 + and Co 2 + . The addition of 0.3488 Lof 1.779 M NaOH results in the complete precipitation of the ionsas Al ( OH...
- Q Answer these 2 questionsPredict how a buffer of HA and A- will resist change inpH when a strong acid is added. Write down a reaction to representyour prediction.Acetic acid is...
- Q Using the appropriate Ksp values, find theconcentration of Cu2+ ions in the solution atequilibrium after 650 mL of 0.45 M aqueousCu(NO3)2 solution has been mixed with 500 mLof 0.25 M...
- Q (1)   Think of (or find) amedication you have taken or otherwise know about. Research thatmedication and report the following:a.   Trade Name and picture ofmedicationb.   Generic Namec.   CAS Numberd.   What is...
- Q The energy density of starlight in interstellar space is 10–15J/m3. If the average wavelength of starlight is 500 nm, what is thecorresponding density of photons per cubic meter of space?(photons/m3)
- Q Identify the limiting reactant in the reaction ofiron and chlorine to formFeCl3, if2.21×101 g of Fe and3.59×101 g ofCl2 are combined. Determine the amount(in grams) of excess reactant that remains...
- Q Chapters 6-8 Review & Molarity IntroductionWorksheetOnce completed, upload worksheet to the appropriate Assignmentsfolder.Write the correct chemical formula forthe following combinations or compounds. You must have properformatting to receive credit!sodium and...
- Q For each of the following solutions, calculate the initial pHand the final pH after adding 0.010 mol of NaOH.PART A: For 240.0 mL of pure water, calculate the initial pH...
- Q An electrochemical cell, composed of an iron electrode (anode)immersed in 0.10 M Fe (NO3)2 and silver electrode (cathode)immersed in 0.11M AgNO3, was found to have a cell potential of1.21V. The...
- Q If the cell potential for a voltaic cell is 0.250 V, and thereduction potential for the oxidation reaction is ⎯0.150 V, what isthe reduction potential for the reaction occurring at...
- Q Does either Ar or CO absorbs thermal IR?which of the greenhouse gases absorbs thermal IR?what are the two main anthropogenic sources of carbon dioxide inthe atmosphere?what are the two main...
- Q Unknown ABenedict’s Test: Bluish colorSeliwanoff’s Test: RedFermentation Test: BubblesIodine Test: no color changeUnknown A is _______because_______________.Unknown CBenedict’s Test: Red-orange precipitateSeliwanoff’s Test: no color changeFermentation Test: BubblesIodine Test: no color changeUnknown...
- Q The data below relate to the adsorption of N2 on rutile (TiO2)at 75 K. Confirmthat they fit a BET isotherm in the range of pressures reported,and determine Vmonand c.p/kPa 0.160...
- Q Calculate the pH at the equivalence point in titrating 0.047 Msolutions of each of the following with 0.019 M NaOH.(a) hydrochloric acid (HCl)pH =Â Â (b) boric acid (H3BO3), Ka =5.8e-10pH =Â Â (c)...
- Q Calculate the percent ionization of a 0.175 M hypobromous acidin pure water and in a 0.125 M potassium hypobromite solution.Explain (using a few sentences) why the percent ionization isdifferent. The...
- Q Assume that at the start of the reaction ΔG is a large negativenumber. As the reaction proceeds toward equilibrium, which of thefollowing are true?1. The value of Q approaches the...
- Q 1. You dissolve 5.00 g sodium hydrogen oxalate (NaHC2O4 ) insuffircient water to produce a final solution volume of 100.0 mL.Assuming all of the solid dissolves, calculate the pH of...
- Q Carefully work through the sample calculations for this lab ONPAPER. Then, set up the same equations on a separate sheet ofpaper, but replace the values in the ‘Sample Calculations’ folderwith...
- Q what is the rate determining step?it is not 1-2Instructions
- Q If you excite a fluorescent sample with light of 310 nm, inaddition to the peaks from the light emitted by the molecule ofinterest, at what other wavelengths (in nm) would...
- Q The hydrolysis of the sugar sucrose to the sugars glucose andfructose, C12H22O11+H2O⟶C6H12O6+C6H12O6 follows a first-order ratelaw for the disappearance of sucrose: rate = k[C12H22O11] (Theproducts of the reaction, glucose and...
- Q Calculate your individual fluid needs in cups per day. How didyou arrive at your answer? Why is hydration so important to oursurvival? What is effect of electrolytes on your water...
- Q THERMODYNAMIC PROPERTY RELATIONS1. Derive expressions for (a) ∆u, (b) ∆h, and (c) ∆s for a gasthat obeys the van der Waals equation of state for an isothermalprocess.2, Estimate the specific-heat...
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