xam 2 [pic] Summer 2011 Chemistry 1411 EXAM # 2 Activity Series of Metals in Aqueous Solution [pic] CHEM 1411 Exam # 2A Name:________________________________ (Chapters 4‚5‚6‚ and 7) Score: [pic] Part I- ( 3 points each) - Please write your correct answer next to each question number‚ DO NOT CIRCLE. ____ 1. Compare the rates of effusion of CO2 & SO2‚ rCO2/rSO2 A. CO2 will effuse 1.45 times
Premium Enthalpy Mole Thermodynamics
demonstrates calorimetry‚ or the technique of measuring heat effects in the surroundings. In order to make sure that there is no temperature change‚ or that it is an isothermal heat transfer‚ it is kept at a similar temperature in an ice bath. By knowing the change in volume‚ the density of ice‚ and the density of liquid water‚ it is presumed that then you could decipher the mass of the ice that melted. With this‚ it is possible to understand the transfer of heat from this chemical equation to its surroundings
Premium Thermodynamics Energy Heat
Effect of Temperature on Cricket Respiration Crickets are ectotherms that rely on their environment as a source of heat for their metabolism. Warmer temperatures allow crickets to respire at a greater rate. Respiration rate (ppm/sec/g) 1.2 1 0.8 0.6 0.4 0.2 0 0 5 10 15 20 25 30 35 40 45 Temperature (°C) Figure 1: Respiration rate (ppm/sec/g) of crickets at 6 different temperatures (°C). Values are means of 6 respiration rate measurements. Error bars represent
Premium Energy Carbon dioxide Heat
Blake Battogtokh Period 6 Research Plan Research Questions: 1. What are the four types of heat transfer? 2. What are the functions of a refrigerator? 3. What are the definitions of each type of heat transfer? 4. Is ice-cold bath the best cooling device to cool a soda? The goal of the project is to determine which type of cooling device will be effective in cooling a soda. In other words‚ the effect of cooling devices on soda cans. There will be four types of cooling devices used
Premium Heat Water Temperature
Tesla White Academic Article #1 January 26‚ 2013 10:00 a.m. The concerns of this article revolve around human health and how it is affected by climate change. Climate change endangers human health affecting all sectors of society both domestically and globally. The atmosphere determines the dispersions‚ transport‚ and development of air pollutants and there is concern that change in climate could affect the human body associate with gases and particles. “As part of a congressionally mandated
Premium Climate Weather Global warming
reaches the planet’s surface and is reflected upward again as a type of slow-moving energy called infrared radiation. Heat travels due to radiation and hetas up both the thermometers. But the one inside the testtube gets heated more consistently. This happens because there is air trapped inside the testtube which acts as a heat store. As the air molecules get heated‚ they absorb the heat and then slowly give it out in all directions as well. in the cas of the thermometer which is out in the
Premium Infrared Black body Heat
Comparison of different types of blood pumps Nowadays‚ there are two main types of blood pumps: kinetic pumps and positive displacement pumps. Kinetic pumps: Centrifugal pump is one of the most familiar kinetic pumps. A centrifugal pump converts the input power to kinetic energy in the liquid by accelerating the liquid by a revolving device - an impeller. The most common type is the volute pump. Fluid enters the pump through the eye of the impeller which rotates at high speed. The fluid is accelerated
Premium Blood Heart Artery
few minutes these small seeds become popcorn. I think it pops by heating up the seeds at a certain temperature and time. When you heat them up for too long they can burn. I am interested and looking forward into finding out why popcorns pop. There are three elements that make popcorn pop. The first is the moisture inside the kernel. When the popcorn kernel heats up‚ the moisture inside it expands. Popcorn needs between 13.5-14% moisture to pop. When the temperature is really hot it sucks up
Premium Popcorn Heat
ratio of the powder‚ this allows for more heat to penetrate the entire sample. This larger surface area-to-volume ratio allows for a sharper more accurate melting point. 4. Approximately 20 crystals should be loaded onto the coverslip to ensure that the sample is heated evenly. 5. The temperature of the stage should be 20°C below the expected melting point when you begin to heat 1-2°C per minute. 6. The melting point range would increase because the heat would not be able to properly penetrate
Premium Temperature Thermodynamics Heat
determined by heating the unknown hydrate to constant mass and calculating the ratio of the moles of water to the moles of anhydrous material. Observations will be made of any color changes during heating and re-hydration of the compound as well as heat effects during the re-hydration. A hydrate is a compound that is associated with a definite number of water molecules. The water is present as individual water molecules and usually no chemical bonds are involved in holding the ions of the compound
Premium Water Sodium chloride Mole