Question

1) If the activation energy of a reaction is 34 kJ/mol and the amount of energy provided by the collision of reactants (in the correct orientation) is 28 kl/mol, will a reaction occur? Explain your answer. What could you do to attempt to get this reaction to occur? 2) Using the reaction below, explain what would occur to equilibrium position and why FeCl,(ag)+3KSCN(aq)Fe(SCN), (ag)+3KC[ (aq) + heat A. Performing the reaction in a freezer (ie. removing heat). B. Adding more potassium thiocyanate (KSCN) C. Removing KCI D. Adding a catalyst Consider the reaction 3) Cig)Dig) The energy of the reactants is 30 kJ/mol; the energy of the transition state is 60 kJmol; and the energy of the products is 20 kJ/mol Draw an energy diagram for this rxn on the axis provided. Be sure to label the reactants, products, transition state, activation energy and energy of reaction Is this reaction is endo or exothemic? What is the energy released or absorbed by the reaction? What is the activation energy for this reaction? 1 of 2 Spring 2019 CHEM& 121 Highline Stanzel Name: 4) Two trials of the same reaction (below) are performed in identical environments with different initial amounts. Determine which scenario, A or B, has the faster rate. You must show the calculation for the rate of cach scenario in order to receive credit NaOH(aq)+HCI(aq)=H,00)+ NaCl(ag) Scenario A: The initial concentration of NaOH is 0..5 M. After 18 seconds, the concentration of NaOH has decreased to 0.08 M. Scenario B: 10 seconds after combining the reactants, the concentration of NaCl is found to be 0.0015 M and the concentration of HCI is determined to be 1.15 M day uogsanc Computed tomography (CT) scans are used to diagnose the need for the removal of the appendix. CT scans give the patient a large level of radiation, which patients randomly assigned to the low-dose CT and 8 of 188 patients randomly assigned to the standard-dose group Complete parts (a) and (b) below ueg sEM a opopuedde angebau o ogeay sem puadde au yinoug uana auop aam saoepuadde ae souopopuadde aaeboN s edde (a) Find the negative appendectomy rates for both samples and compare them. (Round to one decimal place as needed) sane a asop-Mo a JO % had a negative appendectomy Of the standard-dose CT patients, % had a negative appendectomy awsuy xoau al pue spjay ipe au ui aMsue unok J buiuiewa O aMsuy auo un pue spay upa au u aMSue inoA jau nsau peq e pey wa jo % men arogua aB asou o Of those given early surgery. (a) Find and compare the sample percentages of those who had a bad result for each group. (Round to one decimal place as needed) Mol (o) y6no (e) sued ajad unse peq e pey z '(uo Ja ons pey ey ue o won o) juounean euoguanuo suged 9y o Jo (spuou g un noud ou jo aouaunoau e pey Jo 'usjoque ue pey 'pap) ynsou peq e pey i 'auns uee o1 peubsse suaged an o (uopopu ueo e) sppeopue aapau uged uogendod oug Joj Auobans Auea jo payo oup Bupns en pazjuopuei e uo pauodai sors

Answer 1

Scuthorn CAven Palents hrd mdomy sehd for tons cdose stanchard -dose gioupP a) The Paeviage o regalive Pperdetom ratu tor su-dose CT iS foquney 100 TOtal frequny l00 -4.657. The Runtayof egalive appendectimy Yatr toy Atandayd dose P- dieueny Total frea Bx100 loo :4.asy.

a) Th Puantege of Those ho had a bad veutt foy try reat gnup s P equney hioldrqun'y X100 y4 2.27 The Rcantage ofThose ha had a ad reuit fox tnly conventtonal group is fooqunt hal frea 1と x100 2 2b08 1
note: first questions are related to chemistry and last two are proability and stastics so i done probability and stastics questions thank you