Chemistry question and answers for September 15, 2023
- Q Write:a) balanced equationb) total ionic equationc) net ionic equationd) type of reactione)limiting reactant1) Cu(s) + HNO3(aq) -> Cu(NO3)2 (aq)+ NO2(g) +H2O(l)2) Cu(NO3)2(aq) + NaOH(aq) -> Cu(OH)2(s) + NaNO33) Cu(OH)2(s) ->...
- Q Exothermic Vs. Endothermic ReactionReaction progress diagrams for single-step endothermic andexothermic reactions.a. Devise a general statement about the relationship between Eaand the rate of a reaction. 
b. Describe the effect of...
- Q Chromatography explained in details highlightingimportant things to know for test.
- Q Consider a solution formed by mixing50.0 mL of 0.100 M H2SO4,30.0 mL of 0.1000 M HOCl,25.0 mL of 0.200 M NaOH,25.0 mL 0.100 M Ba(OH)2, and10.0 mL of 0.150 M...
- Q A 12.9 mL solution of 0.100 mol L-1 HOCl is titratedusing 0.150 mol L-1 NaOH.What is the pH of the solution after 5.18 mL of the NaOHsolution is added? Express...
- Q A saturated solution of barium fluoride, BaF2, was prepared bydissolving solid BaF2 in water. The concentration of Ba2+ ion inthe solution was found to be 7.52
- Q What is the molecular formula for a compound having a molar mass of90.04g/mol containing carbon, hydrogen, and oxygen? Combustionanalysis reveals .501g of CO2 and .103 grams of water from burning.514...
- Q Estimate the pH of the resulting solution prepared by mixing 1.0mole of solid disodium phosphate and 1.25 mole of hydrochloricacid. The pKas of phosphoric acid are 2.1,7.2,12.4. The answer is2.1<pH<7.2....
- Q 9.) As mentioned below, you are required to design your ownprocedure for determining the heat of dissolution of your chosensalt with a coffee cup calorimeter. Answer the following questionsand consider...
- Q Write the formula of the coordination compoundpentacarbonyliron(0)Write a systematic name forLi2[CoF6].Write a systematic name for[RuCl2(bipy)2].Write a systematic name for[Co(NH3)3Cl3].
- Q Balance each reaction, determine if they are ion-exchange,redox, or acid-base, and determine the direction of the reactionand if they are reverisble or irreversible and explain why.NH4 NO(s) – N(g) +...
- Q Compare and contrast the differenttypes of chemical bonds and define the terms chemical bond,covalent bond (including polar and nonpolar), ionic bond, andhydrogen bond.
- Q 1A. Determine the pH of a KOH solution made by mixing 0.251 gKOH (s) with enough water to make 1.00 × 102 mL of solution. Assume100% purity for the KOH...
- Q What is natural radioactivity? Speak to the different types ofradiation that an unstable nucleus may emit, and the differenttypes of radiation involved.Why is it important to be able to write...
- Q 0.5 mole of a monatomic ideal gas is loaded into a cylinder andcontained by a frictionless piston. The piston is set so that thereis an initial volume of 2L. The...
- Q Classify the bonds between each pair as ionic, polar covalent, ornon polar covalent.Ba-O, O-I, Mg-N, P-F, P-P, Br-Br, Mn-Cl, S-F.
- Q HClO(aq) = Cl2 (aq) Eo = + 1.611VMnO4-1(aq) = MnO2(s) Eo = + 1.679VIn a particular cell, Ecell is measured to be +0.038vwhen the pH in both half-cells is 4.00...
- Q Discuss the nature of the three main types of atomic linebroadening and include the relative magnitude of broadening foreach. Also, discuss what can be done, if anything, to reduce themagnitude...
- Q Use Molecular Orbital Theory to describe bonding in thefollowing. Also find the bond order and decide if stable or not. Isspecies dia or paramagnetic?i. C2+ Â Â ii.Be2+ Â Â iii. Ne2
- Q A student is given two unknown samples continuing two differentcompounds with the same molecular formula, C3H7NO, he annaylzesthem by IR and 1H NMRCompound A:IR: 3366, 3189, 2976, 1662 cm-11H NMR:...
- Q Calculate the normal boiling point of liquid Q if the vaporpressure is .500 atm at 20 degrees C. The change/ delta of H ofvaporization for liquid Q is 26 kJ/...
- Q Calculate the percent ionization of formic acid solutions havingthe following concentrations. Ka = 1.8x10-4Part B 0.460 M Express your answer using two significantfigures.Express your answer using two significant figures.c) 0.110...
- Q Calcuate the pH when 80 mL of 1.25 M HCL is added to 779 mL of1.60 M of sodium acetate.Please show all calculations. Thanks! :)
- Q What volumes of 0.53 M HNO2 and 0.53M NaNO2 must be mixed to prepare 1.00 L of asolution buffered at pH = 3.25?HNO2Â Â Â Â LNaNO2Â Â Â Â L
- Q Forthequestionsbelow,givefullstructuraldiagramsandnamesforallreactantsandproducts.AlsoindicatetheTYPEOFREACTION.2. Theformationof2,2--?pentanediolfrom1--?pentyne.3. Thereactionbetweentrans--?2--?hexenewithhydrogenbromide.4. Theformationof2--?butanolfromanalkene.5. Thereactionbetween2molesofwaterwith2--?pentyne.6. Theoxidationof2--?butanol.7. Thecombustionof2--?pentanol.8. Showtheformationof2--?butenefromanalcohol.9. Showthereactionbetweenwaterandcyclohexene.
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