of 38.7 g carbon‚ 9.7 g hydrogen‚ and 51.6 g oxygen. a. What is the empirical formula of the compound? [2] b. If its molar mass is 62.1 g/mol‚ what is the molecular formula of ethylene glycol? [1] 4. The temp in kelvin of 4.0 L of hydrogen is increased by a factor of 3 and the pressure is increased by a factor of 4. Calculate the final volume of the gas. [2] 5. How many liters of product at 950 mmHg and O°C is produced by the burning of three liters
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similarities and differences in their birth‚ their call to adventures‚ and their characteristics. Both characters had an unusual birth. Kirk’s unusual birth was that he was born with during a space attack when the Romulans came and attacked the USS Kelvin. During the attack his father sacrificed himself for the safety of Kirk and Kirk’s mom. Spock on the other hand was born part human and part Vulcan. Spock’s father is Vulcan and Spock’s mother is human. Spock gets made fun of because of his father
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Neptune is the eight planet from the sun. Neptune is the outermost plant of the gas giants. Neptune has a very different surface than most of the planet. Neptune has a very thin rings of ice. Neptune does not have any life‚ but its weather there is very active. Large storms usually occur there. Neptune has a rocky inner core which have water around. Neptune’s atmosphere has hydrogen‚ helium and methane. Neptune has rings around it. Neptune has 5 rings which are Galle‚ Le Verrier‚ Lassell
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Ch. 1 Questions 3.) How do you think the principle of uniformitarianism accounts for occasional catastrophic events such as meteorite impacts‚ huge volcanic eruptions‚ or great earthquakes? The principle of uniformitarianism states‚ “The present is the key to the past (Murck‚ B. W.‚ Skinner‚ B. J.‚ Mackenzie‚ D.‚ Visualizing Geology 2008). This means that anything that happens or will happen today‚ most likely has happened in the past. Scottish geologist James Hutton’s observation is that the physical
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Kelvin Chambwa Question: Personal growth and career development of managers and employees alike are among the most important tasks for managers. a) Describe characteristics of adult development b) Explain causes of career related stress for ages between 30 and 50 years c) Discuss organisational causes of stress and stress management strategies Introduction Early adulthood is entered when men (and women) begin careers and families. After an evaluation of themselves at about age
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The catalytic effect of D-block ions and the kinetics of reactions iodine clock reaction: By Stephen Parsons 6K2 Centre number: 61813 Candidate number: 8270 Table of Contents My aim and my reaction: 3 Rate of reaction: 4 Activation enthalpy: 5 Collision theory: 6 The effect of temperature on reaction rate: 7 The effect of concentration on reaction rate: 7 The effect of a catalyst on reaction rate: 8 D-block elements: 9 The effect of extra kinetic energy (from stirring etc.): 10 Where
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First hand investigation of the Dissolution of Solutes Background Information Molar heat of solution * The molar heat of solution of a substance is the heat absorbed when one mole of the substance dissolves in a large excess of water. It is expressed in kJ/mol. * The specific heat of water is a constant‚ with a value of 4.18 J/ g*oC. AIM: To determine the molar heat of solution for two different solids Equipment: * A calorimeter (made using 2 Styrofoam cups with a cardboard lid)
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Chemistry Exam Review Matter and Chemical Bonding Significant Digits All non zero integers are significant ~ 456cm All zeros to the left of the first non zero digit are not significant~ 0.005kg All zeros between non zero digits are significant~ 207.08 km All zeros at the end of a number that has a decimal point are significant ~ 34.070 mg Density Density is a physical property of matter‚ as each element and compound has a unique density associated with it. Density defined in a qualitative
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HOW TO DEAL WITH PEOPLE YOU CAN’T STAND? Good morning everyone. My name is Amanda and they are my group members Chen‚ Mah‚ Kelvin and Wani. Today we’re going to talk about how to deal with people you can’t stand. We all know that there is at least one in everyone’s lives‚ and let’s be honest we probably are that person in someone else’s life at some point or another. One of the simplest ways to deal with people you can’t stand is to avoid them but unfortunately‚ that’s not always possible. Whether
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unit that is used in science which is the most useful and dominate in this field. Other measurement units such as the metric system aren’t as useful as the SI system when it comes to being used in science. The metric system doesn’t have moles or kelvins‚ which are very important in the use of science. There are many more reasons why the SI system should continue to be used in science for measurement‚ and I’m going to explain why. National governments adopt one system of measurement because it is
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