contains 66.0 g CO2‚ 2.02 g of H2‚ and 16.0 g of O2. If the total pressure of the mixture is 725 torr‚ what is the partial pressure of each gas? [ do not neglect significant figures! ] SHOW YOUR WORK to get full credit. 1) Number of moles: 2) Pressure of each gas: 2. [ out of 16 pts ] When 11.1 g of lead reacts with 3.81 L of oxygen gas‚ measured at 1.00 atm and 25.0°C‚ 11.8 kJ of heat is released at constant pressure. What is ∆H° for this reaction? (R = 0.0821 L •
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for a Closed System Question A gas is contained in a cylinder fitted with a movable piston as presented in Figure E6.4.1. Figure E6.4.1: A cylinder fitted to a moving piston If the cylinder is placed in boiling water with the piston held in a fixed position‚ 5 kcal of heat is absorbed by the gas‚ which equilibrates at 150oC and a higher pressure. The piston is then released‚ and the gas does 250 J of work in moving to its new equilibrium position. The final gas temperature is 150oC. Write the
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C hapter 1 MATTER IN IN OUR SURROUNDINGS As we look at our surroundings‚ we see a large variety of things with different shapes‚ sizes and textures. Everything in this universe is made up of material which scientists have named “matter”. The air we breathe‚ the food we eat‚ stones‚ clouds‚ stars‚ plants and animals‚ even a small drop of water or a particle of sand– each thing is matter. We can also see as we look around that all the things mentioned above occupy space‚ that is
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Some examples of matter would be water‚ air‚ and nitrogen! ● Slide 3: What are the three states of matter that are important in Chemistry? What are the major characteristics of solids? The three states of matter that are important in chemistry are solid‚ liquid‚ and gas. The major characteristics of solids are: particles are packed tightly together in an organized matter‚ usually dense‚ incompressible and do not flow. ● Slide 4: What are the major characteristics of liquids? The major characteristics of
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definite shape nor a definite volume. | 2. | Incompressible | Compressible to a small extent. | Highly compressible | 3. | There is little space between the particles of a solid. | These particles have a greater space between them. | The space between gas particles is the greatest. | 4. | These particles attract each other very strongly. | The force of attraction between liquid particles is less than solid particles. | The force of attraction is least between gaseous particles. | 5. | Particles of
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8.2.1 (iv) Fractional Distillation of Crude Oil By Blake Turner – Year 11 Fractional Distillation of Crude Oil Introduction Crude oil is the term for "unprocessed" oil‚ the stuff that comes out of the ground. It is also known as petroleum. Crude oil is a fossil fuel‚ meaning that it was made naturally from decaying plants and animals living in ancient seas millions of years ago -- most places you can find crude oil were once sea beds. Crude oils vary in colour‚ from clear to tar-black‚
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chemistry. In this lab‚ the ideal gas law helps determine and evaluate the molar mass of gases and volatile liquids. The ideal gas law compares four properties of a gas which include pressure‚ volume‚ moles‚ and temperature. During this experiment‚ the moles would be unknown‚ in effect the student must use a substance mass divided by its molar mass. With this‚ the ideal gas law can be arranged in an equation fit for helping the student determine the molar mass of a gas. Purpose: The purpose of the lab
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fracturing. Physical and Chemical Properties At normal pressure‚ liquid nitrogen boils at 77 K (−195.8°C or −320.4°F).The liquid to gas expansion ratio of nitrogen is 1:694‚ which means liquid nitrogen boils to fill a volume with nitrogen gas very quickly.Nitrogen is non-toxic‚ odorless‚ and colorless. It is relatively inert. It is not flammable.Nitrogen gas is slightly lighter than air once it reaches room temperature. It is slightly soluble in water. Storage liquid nitrogen is usually
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the management of a petroleum economy: revisting the Nigeria crisis. A lecture presented at the second Edition of the the lectures in honour of Prof. G.A Olawoyin (SAN) News watch July 11‚ 2011 legal Framework for Appropriate funding of the oil and Gas industry
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distillation method was used to divide hexane and toluene from a mixture (50:50) of hexane and toluene. Hexane was separated from toluene and was observed from the gas chromatography‚ it showed that hexane increased from 0.0.873 to 0.886 moles. Once the mixture of toluene and hexane hit 70 degrees in the experiment‚ the distillate was used for the gas chromatography. Hexane was higher in the distillate stage. The first drop of condensation appeared at 79°C. The volume of the distillate was 0.88ml and 0.98ml
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