Drdennis

2 Organic structures Where students are asked to draw organic structures, unless a specific type is required in the question and stated in the mark scheme, these may be given as displayed, structural or skeletal formulas or a combination of all three as long as the result is unambiguous. In general • Displayed formulae must show all of the bonds and all of the atoms in the molecule, but need not show correct bond angles. • Skeletal formulae must show carbon atoms by an angle or suitable inte...

3. Marking points 3.1 Marking of lists This applies to questions requiring a set number of responses, but for which students have provided extra responses. The general principle to be followed in such a situation is that ‘right + wrong = wrong’. Each error / contradiction negates each correct response. So, if the number of error / contradictions equals or exceeds the number of marks available for the question, no marks can be awarded. However, responses considered to b...

Question Marking guidance Additional Comments/Guidelines Mark 05.1 Step 1 M1 fractional distillation M2 separated into mixtures of compounds with similar boiling points / similar sized molecules Step 2 M3 (thermal) cracking M4 to make alkenes / propene / shorter molecules Step 3 M5 (addition) polymerisation M6 molecules joined together or to produce long chain molecule For each step the two marks are independent M2 to separate naphtha from other compounds; to separate compounds...

1. A person with _____ experiences wide-ranging and persistent feelings of worry and anxiety. a. generalized anxiety disorder b. specific phobia c. social anxiety disorder d. obsessive-compulsive disorder 2. The inaccurate and inappropriate beliefs held by people with various psychological problems are called: a. existential anxiety. b. irrational assumptions. c. moral anxiety. d. conditions of worth. 3. A diagnostic criterion for posttraumatic stress disorder is the presence of significant dist...

Read the item and then answer the question that follows. Two psychology students were discussing the topic of social influence. ‘I find it fascinating how some people are able to resist social influence’, said Jack. ‘It must be the result of having a confident personality.’ ‘I disagree’, replied Sarah. ‘I think resisting social influence depends much more on the presence of others.’ Discuss two explanations of resistance to social influence. As part of your dis...

The advanced practice psychiatric nurse realizes which of the following regarding workbook exercises in therapy? A . Workbook exercises are only an adjunct to treatment. B . Workbook exercises simplify the real work in therapy. C . Treatment manuals consistently correlate positively with treatment outcome. D . Use of workbook exercises and approaches promotes creativity and flexibility in the therapeutic process. According to Freud, failure to successfully accomplish the tasks of learning indep...

1. (25 points/1 point each blank) Fill in ALL of the blanks with the best word(s) for the following statements. A. The polymerase __________________ synthesizes mRNAs, the polymerase __________________ synthesizes pre-rRNAs and the polymerase __________________ synthesizes tRNAs and 5S rRNAs. The polymerase __________________ adds adenosines to the 3' ends of most mRNAs and some viruses utilize a polymerase called __________________ to copy their RNA genomes into DNA. B. Dur...

1 In the mass spectrum of the following compounds, which is the tallest—the peak at m/z = 57 or the peak at m/z = 71? a) 3-methylpentane b) 2-methylpentane 2 Draw structures for a saturated hydrocarbon that has a molecular ion with an m/z value of 128 3 A mass spectrum shows significant peaks at m/z = 87, 115, 140, and 143. Which of the following compounds is responsible for that mass spectrum? 4 What hydrocarbons that contain a six-membered ring will have a molecular ion peak at m/z = ...

1. How many signals would you expect to find in the 1H NMR spectrum of each of the following compounds? 2. Describe the appearance of the 1H NMR spectrum of each of the following compounds. How many signals would you expect to find, and into how many peaks will each signal be split? (a) ClCH2OCH2CH3 (b) CH3CH2OCH3 (c) CH3CH2OCH2CH3 (d) p-Diethylbenzene (e) ClCH2CH2OCH2CH3 3. How many signals would you expect to see in the 13C NMR spectrum of each of the following compounds? (a) Prop...

. A client receives a new prescription for simvastatin (Zocor) 5 mg PO daily at bedtime. What action should the nurse take? (correct Answer- Administer the medication as prescribed with a glass of water 272. Which client should the nurse assess frequently because of the risk for overflow incontinence? A client Who is confused and frequently forgets to go to the bathroom 273. While monitoring a client during a seizure, which interventions should the nurse impleme...