which group of the Periodic Table should each element be placed? (5 Marks) How much energy is needed to convert one mole of gaseous atoms of element (2 Marks) C into 1 mole of dipositive ions? (Total 7 Marks) MOLARITY CALCULATIONS 6. Calculate number of moles of: (a) HCl in 25 cm3 of 0.10 mol dm-3 solution
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H+(aq) + HSO3-(aq) Certain related thermodynamic data are provided below: H2SO3(aq) H+(aq) HSO3-(aq) ----------------- ---------- ------------------ Hf( kcal/mole -145.5 0 -151.9 S° cal/mole K 56 0 26 (a) Calculate the value of ΔG° at 25°C for the ionization reaction. (b) Calculate the value of K at 25°C for the ionization reaction. (c) Account for the signs of ΔS° and ΔH° for the ionization reaction in terms of
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FORM 7 NOTES ‚ EXAMPLES ‚ PROBLEMS & SOLUTIONS Table of Content Chapter Topic Page 1. Mechanics …………………. 2 2. Gravitation …………………. 61 3. Direct Current ………………….. 71 4. Electrostatics …………………. 90 5. Simple Harmonic Motion ……. 116 6. Waves ………………………… 128 7. Magnetism …………………. 156 8. Electromagnetic Induction …… 162 9. Atomic Physics …………. 184 10. Answers …………. 194
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CHAPTER 3—DEMAND AND SUPPLY MULTIPLE CHOICE 1. If demand increases while supply decreases for a particular good: a. its equilibrium price will increase while the quantity of the good produced and sold could increase‚ decrease‚ or remain constant. b. the quantity of the good produced and sold will decrease while its equilibrium price could increase‚ decrease‚ or remain constant. c. the quantity of the good produced and sold will increase while its equilibrium price could increase‚ decrease or remain
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Date Lab: Denisty – Solids and Liquids Part 1: Density Background Information: The density of an object is how much “stuff”‚ or molecules‚ a substance is made of. Density is how tightly packed the molecules are. To calculate the density of a substance we need to know the mass (weight) of the substance and the volume (how much space) of the substance. Mass is determined by weighing an object. Volume of regular shaped objects is calculated by measuring length (L)
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Antifreeze | -8.0°C | Calculations Questions: 1. Using the equation ΔT = Kf m‚ calculate the molality of the 10% antifreeze solution. 2. Use the formula molality = moles solute/kg solvent to find the number of moles in 10% antifreeze solution. 3. Using the formula molar mass = grams/moles calculate the molecular mass of antifreeze in the 10% solution. 4. Using the equation ΔT = Kf m¸calculate the molality of the 20% antifreeze solution. 5. Use the formula molality = moles
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time‚ and also the cart’s velocity versus time. A statistics package is used to integrate the force versus time curve to obtain the impulse. In addition‚ the initial and final (maximum and minimum) velocities can be obtained‚ making it easy to calculate initial and final momentum‚ and test the impulse-momentum relation. Pre-Lab Assignment Complete the following problem‚ using the impulse-momentum relationship. A 4kg mass is initially moving in the x direction at 5 m/s. A force in the positive
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compounded annually. At the end of one year this sum amounts to Rs 12‚000. Calculate : (i) the rate of interest per annum (ii) the amount at the end of the second year. 6. If the interest is compounded half yearly‚ calculate the amount when the principal is Rs 7400‚ the rate of interest is 5% per annum and the duration is one year. 7. The compound interest on a certain sum of money at 5% per annum for 2 years is Rs 246. Calculate the simple interest on the same sum for three years at 6% per annum. 8
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UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education *9202671358* CAMBRIDGE INTERNATIONAL MATHEMATICS Paper 4 (Extended) 0607/04 October/November 2010 2 hours 15 minutes Candidates answer on the Question Paper Additional Materials: Geometrical Instruments Graphics Calculator READ THESE INSTRUCTIONS FIRST Write your Centre number‚ candidate number and name on all the work you hand in. Write in dark blue or black pen. Do not use
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total overhead costs by total direct labor hours. Assume‚ for the calculations below‚ that plant overhead is a committed (fixed) cost during the year‚ but that direct labor is a variable cost. • Calculate the plant-wide overhead rate. Use this rate to assign overhead costs to products and calculate the profitability of the four products. The assignment spreadsheet provides a starting point for your calculations‚ with some data and formulas already supplied. Suppose sales in 2001 equal 26
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