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WELCOME TO AYOSTUFFS BEST EXAM EVER ===================================== KEEP REFRESH THIS PAGE IN EVERY 5MIN ===================================          CHEMISTRY PRACTICE SOLUTION (1) Volume of pipette is 25.00cm³ Titrations      |Rough| 1 | 2 | 3 Final Reading|23.00|21.50|21.40|21.50 Initial Reading|0.00|0.00|0.00|0.00 Vol. Of acid used|23.00|21.50|21.40|21.50 (1a) Vol of acid used VA = 21.50+21.40+21.50/3 = 21.47cm³ (1bi) Conc. Of A in g/dm³ = 3.65÷500/1000 = 7.3g/dm³   Conc. of A in mol/dm³ = gram conc/molar mass = 7.3/[1+35.5] = 7.3/36.5 =0.2mol/dm³ (1bii) Using CAVA/CBVB = nA/nB 0.2×21.47/CB×25.00 = 2/1 CB = 0.2×21.47/25.00×2 = 0.08588mol/dm³ (1biii)  Molar mass of B = gram conc/molarity = 10.60/0.08588 =123.43g/mol (1biv) X2CO3 = 123 2[X] + 12 + 3[16] = 123 2x + 60 = 123 2x = 123 - 60 = 63 X = 63/2 = 31.5 (1bV) No of moles of X2CO3 = molarity × volume = 0.08588 × 25 = 2.147moles Mole ratio of X2CO3 to CO2 is 1:1 Therefore, No of moles of CO2 released = 2.147moles Volume of CO

WELCOME TO AYOSTUFFS BEST EXAM EVER ===================================== KEEP REFRESH THIS PAGE IN EVERY 5MIN =================================== *2020 COMMERCE THEORY ANSWERS*  =========================================================== OBJ 01-10: CCAADCBBED 11-20: DBEAACCCDC 21-30: BDDACDEAAD 31-40: ABEDDACBCB 41-50: DAAEBABBBA 51-60: DCCEBBEEEA  ==============================≠======================= THEORY:  1)  (Choose Any Five) (i)Banker to the government (ii) Insurance and control of currency (iii) Lender of last resort (iv) Foreign exchange transaction (v) Responsible for monetary policy (vi) Banker's bank EXPLANATION: (i) Banker to the government: Central Bank is an agent and banker to the government. It control public account, receives revenue on behalf of the government and make payment from this account. Central Bank also obtains loan on behalf of the government. (ii) Insurance and control of currency: The central bank has the right to order the printing of the currenc

WELCOME TO AYOSTUFFS BEST EXAM EVER ===================================== KEEP REFRESH THIS PAGE IN EVERY 5MIN =================================== ECONOMICS OBJ: 1-10: DCABDDCAAA 11-20: EEEABDBABD 21-30: BBCEAEABEE 31-40: EDDEDDAAAC 41-50: CCACACAEEA 51-60: DEDEEEBCED ECONOMIC ESSAY (1a) Qd = 40 - 4p In a tabular form: P|10|8| 6|4 |2 |1 Q|0 |8|16|24|32|36 When price = 10 Qd = 40-4(10) = 0 When price = 8 Qd = 40-4(8) = 8 When price = 6 Qd = 40-4(6) = 16 When price = 4 Qd = 40-4(4) = 24 When price = 2 Qd = 40-4(2) = 32 When price = 1 Qd = 40-4(1) = 36 (1b) Draw the diagram: CLICK HERE FOR THE IMAGE (1c) The slope of demand curve is downwards which indicates that the quantity demanded has negative correlation with price. The higher the price the lower the quantity demanded and vice versa. ============================ (2a) MR = ∆inTR/∆inQ TR2 - TR1/Q2 - Q1 At Q = 2, MR = 30-20/2-1 = ₦10 At Q = 3 MR = 60-30/3-2 = ₦30 At Q = 4 MR = 80-60/4-3 = ₦20 At Q = 5 MR = 120-80/5-4 = ₦40 At Q = 6 MR =

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2020 NECO SSCE Timetable [5th Oct. – 14th Nov. 2020] The Federal Government has released a comprehensive schedule for the National Examinations for exit classes, spanning from 17th August to 14th November, 2020. According to the Minister of State for Education, Hon. Chukwuemeka Nwajuiba, Senior Secondary School Certificate Examinations, (SSCE) for SS3, conducted by NECO will start on the 5th of October and end on 18th of November, 2020. The Minister therefore has directed NECO to release details of the 2020 June/July examination timetable. Kindly find attached PDF below the approved 2020 NECO Timetable for 2020 June/July Examination (SSCE Internal). This is to inform all candidates who registered for the NECO School Certificate Examination [SSCE] for 2019/2020 that the examination dates has been announced. According to the National Examination Council of Nigeria [NECO] the June/July SSCE 2020 examination will commence from 5th October – 14th November, 2020. The Official NECO June/July