1.1.3 The electricity enters the power lines of the national grid and is transmitted. (2)

Lees die volgende instruksies noukeurig voordat jy die vrae beantwoord:  1.       Die antwoorde wat jy verskaf, moet jou eie, oorspronklike werk wees. Geen kopiëring van enige bron word toegelaat nie. Geen punte sal toegeken word vir werk wat gekopieer word nie.  2.       Lees al die vrae noukeurig.  3.       Beantwoord AL die vrae in die vasvra – moenie enige vrae onbeantwoord laat nie en moenie jou antwoorde op papier skryf nie.  4.       Gebruik die puntetoekenning as ‘n gids tot hoeveel inligting in jou antwoorde benodig word.  5.       ‘n Lêeroplaai kan nodig wees. Jy sal papier, ‘n potlood, ‘n liniaal en ‘n skandeerder nodig hê, app of telefoonkamera skandeer.  6.       Slegs hand getekende diagramme, vloeikaarte of tabelle op ‘n aparte stuk papier wanneer gevra word om dit te doen.  7.       Alle tekeninge moet in potlood gedoen word en in blou of swart ink gemerk word.  8.       Die diagramme in hierdie vraestel word nie noodwendig op skaal getrek nie.  9.       Jy kan ‘n sakrekenaar gebruik indien nodig. 

  Section A:                   Discursive Essay Answer ONE question from this section. Write a Discursive Essay showing evidence of analysis, interpretation, explanation and argument on the following:   Theme: Russian Revolution  QUESTION 1 Compare Stalin’s Five-Year Plans with regards to Industry and Agriculture.  Which of the two sectors had the best outcome for the people of USSR? Focus on the economic and social outcome.                                                                                                                                                          (70)   OR Theme: Crisis of Capitalism : The great depression in the USA  QUESTION 2   To what extent was Franklin D. Roosevelt’s New Deal Policies a success in USA between 1933 – 1939? Focus on Economic and Social aspects.                                                                                                                                                          (70) OR   Theme: Apartheid in South Africa:1940’s to 1960’s  QUESTION 3  Passive resistance in South Africa during the 1940’s-1950’s did not have the effect that black people had hoped for. To what extent was violent resistance then justified? Focus on 1949 – 1959 in your answer.                                                                                                                                                           (70)                          

1.1.2. Subject matter (2)

EXAMINATION INSTRUCTIONS 1. This question paper consists of SECTION A and SECTION B 2.  One Question from Section A and one Question from Section B must be answered. 3. SECTION A: Discursive Essay  Question 1: Russian Revolution  Question 2: Crisis of Capitalism: The Great Depression in the USA  Question 3: Apartheid in South Africa:1940’s to 1960’s    SECTION B: Extended Writing  Question 4: Russian Revolution  Question 5: Crisis of Capitalism: The Great Depression in the USA  Question 6: Apartheid in South Africa:1940’s to 1960’s  4. When answering the questions, you should apply your knowledge, skills and insight. 5.  Accurate and adequate factual knowledge is essential; equally important is the ability to use relevant information critically in answering the questions.  

1.1.3. Visual Literacy (2)

How many grams of powder milk would you need to prepare 500 mL of a 4% w/v milk solution?

A serial dilution is performed using the ATP stock from the previous question, as follows below. Determine the concentration, in μg/mL, of tube 3.             

You measure the absorbance of several samples of known concentration in order to generate a calibration curve. You plot the data with concentration (mg/ml) on the x-axis, and absorbance (AU) on the y-axis. The curve has an R2 value of 0.99 and an equation of y = 0.46x + 0.008. You measure the absorbance of a new sample, of unknown concentration. You get a result of 1.7 AU. Based on your calibration curve, what can you estimate the sample’s concentration to be, in mg/ml? Round your answer to 2 decimals. 

How many grams of caffeine would you need in order to prepare 50 mL of a 30 µM solution of caffeine? The Mw of caffeine is 456 g/mol.