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The reaction below is used in the Haber process to manufacture ammonia N2(g) + 3H2(g) → 2NH3(g) The boiling points of the substances in the reaction are as follows: 3.1 Refer to the intermolecular forces and explain the difference in boiling pointbetween NH3 and N2. (3) 3.2 Write down the FORMULA of the substance in … Read more
Hydrogen cyanide (HCN) is a very poisonous compound used in the manufacturing ofplastics, mining of gold and as a poison. 2.1 Define the term chemical bond. (2) 2.2 Draw Lewis structures for: 2.2.1 HCN (2) 2.2.2 H2O (2) 2.3 What is the shape of the HCN molecule? (1) 2.4 Calculate the electronegativity difference for the … Read more
Various options are provided as possible answers to the following questions.Choose the answer and write only the letter (A–D) next to the question numbers(1.1 to 1.10) in the ANSWER BOOK, e.g. 1.11 E. 1.1 The tendency of an atom to attract the bonding pair of electrons is knownas … A electron affinity.B electronegativity.C polarity.D activation … Read more
Choose ONE of the following topics and write a short text. The body of your response should be between 80 and 100 words in length. Write down the NUMBER and the HEADING of the text you have chosen, e.g. 3.1 POSTER. Spend approximately 30 minutes on this section. 3.1 POSTER There have been a number … Read more
Respond to ONE of the following transactional writing tasks. The body of your response should be between 120 and 150 words in length. Write down the NUMBER and the HEADING of the text you have chosen, e.g. 2.1 FRIENDLY LETTER. Pay particular attention to format, language and register. Spend approximately 40 minutes on this section. … Read more
Write an essay of between 200 and 250 words in length on ONE of the following topics. Write down the NUMBER and TITLE of the essay you have chosen correctly, e.g.1.1 I would not want to live anywhere else! Give your own title if your choice is QUESTION 1.3, 1.7.1 OR 1.7.2. Spend approximately 80 … Read more
9.1 For any two events, A and B, it is given that P(A) = 0,48 and P(B) = 0,26. Determine: 9.1.1 P(A and B) if A and B are independent events (2) 9.1.2 P(A or B) if A and B are mutually exclusive events (2) 9.2 A survey was conducted among 130 Grade 11 learners … Read more
In this section, there are contextual questions set on the following poems: ‘The Sea and the Eagle’ by Sydney David Clouts ‘A Sleeping Black Boy’ by Mongane Wally Serote NOTE: Answer the questions set on BOTH poems, i.e. QUESTION 5.1 AND 5.1.1 Complete the following sentence by filling in the missing words. Writeonly the word … Read more
In this section, there are contextual questions set on the following short stories:In this section, there are contextual questions set on the following short stories: ‘FORBIDDEN CLOTHES’ by Jamila Gavin ‘SWIMMING PARTNERS’ by Timwa Lipenga Read the following extracts from the TWO short stories and answer the questionsset on each. The number of marks allocated … Read more
8.1 The purchase price of a car five years ago was R200 000. The current book value of the car is R85 000. Using the reducing-balance method of deprecation, calculate the annual rate of deprecation. (3) 8.2 An amount of money was invested at a rate of 8,5% p.a., compounded quarterly. Calculate the effective interest … Read more