D) +1 E) 0 7. How many equivalent resonance forms can be drawn for SO2 without expanding octet on the sulfur atom (sulfur is the central atom)? A) 3 B) 1 C) 2 D) 4 E) 0 8. Using the table of average bond energies below‚ the ΔH for the reaction is __________ kJ. Bond: C≡C C-C H-I C-I C-H D (kJ/mol): 839 348 299 240 413 A) -63 B) -217 C) +160 D) -160 E) +63 9. The molecular geometry of the CS2 molecule is __________. A) trigonal planar B) bent C) T-shaped D) linear
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Question 1 Electromagnetic radiation behaves both as particles (called photons) and as waves. Wavelength () and frequency () are related according to the equation where is the speed of light (). The energy ( in joules) contained in one quantum of electromagnetic radiation is described by the equation where is Planck’s constant (). Note that frequency has units of inverse seconds ()‚ which are more commonly expressed as hertz (). Part A A microwave oven operates at 2.40 . What is the wavelength
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Part 1 A） Chemist 1: New product development This career role involves the development of new paints to meet changing market needs. The chemist would be working as a member of a team developing and testing new colloidal paints to suit specific purposes. This might include weatherproof paints‚ which retain their colour and are resistant to solar radiation‚ or indoor paints that can be easily and repeatedly washed. Chemist 2: Environmental monitoring This career role as a public servant could
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12U Equilibrium Unit Test Multiple Choice K/U Identify the letter of the choice that best completes the statement or answers the question. ____ 1. When solid lead(II) phosphate is in equilibrium with its ions‚ the ratio of lead(II) ions to phosphate ions is which of the following? a. 1:1 d. 2:3 b. 1:2 e. 3:2 c. 2:1 ____ 2. In a saturated solution of silver phosphate‚ the concentration of silver ion is 4.5 10-4 mol/L. The Ksp of silver phosphate would be which of the following
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In class we decided that the rate of a reaction increases when there are more collisions or when the activation energy is reduced. We then determined that there were four ways to increase the reaction rate: increase temperature‚ add a catalyst‚ increase surface area‚ and increase the concentration of reactants. The objective of this lab was to experimentally show how temperature and surface area impact the rate of reaction‚ so only two of these methods were tested. The evidence indicates that increasing
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International Business: The New Realities‚ 3e (Cavusgil) Chapter 4 The Cultural Environment of International Business 1) Cross-cultural risk is often intensified by managers with geocentric tendencies. Answer: FALSE Difficulty: Easy Skill: Concept Objective: 4-1 AACSB: Dynamics of the global economy; Multicultural and diversity understanding 2) An ethnocentric orientation positively impacts the ability of managers to manage business projects and new business practices abroad.
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IB#Mathematics#Exploration# ! This!exploration!is!your!chance!to!explore!an!area!of!math!you!are!interested!in‚!kind!of!like!a!Math! Personal!Project.!!Pay!close!attention!to!the!rubric!the!whole!way!through.! ! It!will!be!carried!out!in!several!stages.!!Below!you!will!find!a!summary!of!dates!on!which!the! different!stages!of!the!process!are!due.!These!dates!are!given!to!you!in!advance!so!that!you!can! balance!your!workload!against!other!subjects!ahead!of!time.! ! The!project!will!be!introduced
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Data-based questions Study the photos below and answer the following questions. Photo A Photo B Photo C (a) What are industries shown in photos A‚ B and C respectively? (3 marks) (b) Draw a diagram to illustrate the manufacturing system of the industry shown in photo A. (4 marks) (c) Describe and explain the characteristics of these three industries. (i) Photo A (3 marks) (ii) Photo B (3 marks) (iii) Photo C (in tradition) (3 marks) (d) How do personal factors affect
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PSYCHOLOGY liam.o’leary.11@ucl.ac.uk In Psychology‚ you will only get penalised for NOT ASKING QUESTIONS. Paper 1 = Core material 50% of final grade Section A – 53 % Section B – 47% A – Knowledge & Comprehension B – Evidence of critical thinking: application‚ analysis‚ synthesis and evaluation C – Organisation (Structure) Strategy: 20 mins + 5 mins planning for each of SAQs questions 50 mins for LAQ question CHOOSING and planning 10 mins for spellcheck Paper 2 = 25% of final grade Two
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Reaction Rates of Barley Alpha Amylase with Starch at Specific pH ’s and Temperatures Page 1 Abstract Enzyme ’s are used as catalysts in certain reactions. They help lower the activation energy needed for the reaction to go to completion. At optimum temperature and pH the amount of collisions of substrate and enzyme is at its highest‚ any deviation from the optimum temperature and pH will result in the denaturization of the enzyme. The purpose of this experiment is to find the optimum
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