MJC H2 Chem 2013 Prelim P3 QP

©chemistry@meridian jc Name ________________________ Class: ___________ Reg Number: _____ MERIDIAN JUNIOR COLLEGE JC 2 Preliminary Examination Higher 2 _________________________________________________________________________ Chemistry 9647 Paper 3 Free Response 17 Sep 2013 2 hours Additional Materials: Data Booklet Writing Paper _________________________________________________________________________ INSTRUCTIONS TO CANDIDATES Write your name, class and register number in the spaces provided at the top of this page. Answer 4 out of 5 questions in this paper. Begin each question on a fresh page of writing paper. Fasten the writing papers behind the given Cover Page for Questions 1 & 2 and Cover Page for Questions 3, 4 & 5 respectively. Hand in Questions 1 & 2 and 3, 4 & 5 separately. You are advised to spend about 30 min per question only. INFORMATION FOR CANDIDATES The number of marks is given in brackets [ ] at the end of each question or part question. You are reminded of the need for good English and clear presentation in your answers. This document consists of 18 printed pages and 4 blank pages 923

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2 ©chemistry@meridian jc [Turn over (ii) Calculate the number of boxes of tablets (refer to the photograph on page 2) a traveller needs to carry for a 5 day journey if he is going to consume it up to the safety limit so as to maximise his ru