Homework Answers
- Generally gaseous propane condenses at the temperature below -43 degree C and to achieve this temperature heat must be released or the process of condensation have to be an exothermic one.
- Gaseous propane molecule almost does not have any intermolecular forces ( Vander waals force) of attraction between them. On condensing the non polar propane molecules comes closer to each other and gradually start to develop van der waal forces of attraction between them which gives rise loose bonding ( energy of which is much lower than a covalent bond) between each molecule. This loose bonding would result release of heat energy ( about 15 KJ/mol) in case of propane.
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Week 10– Concept Questions Liquid propane is used as fuel for the grill at BBQs. The...
A home propane tank at is empty when its internal pressure is psi psi absolute pressure....
A home propane tank at is empty when its internal pressure is psi psi absolute pressure. If its volume of 125 ft^3 is filled to the point where its pressure is 75 psi absolute pressure(with all propane staying in the gaseous phase), how much mass has beenadded? Note that the molecular weight of propane is the same as that of carbondioxide, so the gas-specific constant for carbon dioxide given in the class text appendix can be used for propane. Also,...
General Chemistry II Part II. Fuel efficiency (6 pts) Fuel efficiency is the efficiency of the...
General Chemistry II Part II. Fuel efficiency (6 pts) Fuel efficiency is the efficiency of the conversion of chemical energy contained in a fuel into work. Let's see which one of these fuels (hydrogen gas or liquid propane) will allow us to do more electrical work. Use the thermodynamic data provided to answer the following questions: 1. First determine the amount of heat released in direct combustion of (a) 1 mole of hydrogen gas; (b) 1 mole of liquid propane...
MHE Reader Propane, C3Hs(&), reacts with oxygen gas to produce carbon dioxide gas and water vapor....
MHE Reader Propane, C3Hs(&), reacts with oxygen gas to produce carbon dioxide gas and water vapor. a) b) 2. Write a balanced equation including states of matter for the reaction. If 4.55 g of propane reacts with excess oxygen under standard conditions, calculate the theoretical yields (in grams) for both carbon dioxide and water, and · the total amount of heat released/absorbed when the reaction is complete. c) Ethanol is currently being used as a replenishable fuel alternative/supplement because it...
Week 11- Concept Questions Explain what type of forces, Intermolecular or Intramolecular are involved in the...
Week 11- Concept Questions Explain what type of forces, Intermolecular or Intramolecular are involved in the following processes. How do you know? How is this related to chemical vs physical changes? Forces overcome when ice melts Forces overcome when gaseous water is converted into hydrogen gas and oxygen gas Forces that prevent ice cubes from taking on the shape of their container Forces overcome when liquid water is vaporized
a) A natural gas fuel contains 80 v/o methane, 10 v/o ethane, and 10 v/o propane. Determine the heat released by combustion of 1m3 of the gas. Assume that products of combustion are CO2 and liquid H2O...
a) A natural gas fuel contains 80 v/o methane, 10 v/o ethane, and 10 v/o propane. Determine the heat released by combustion of 1m3 of the gas. Assume that products of combustion are CO2 and liquid H2O. b) How would the answer to part (a) change if the water produced were vaporized?
A Fuel Gas Consists Of 75% Butane (C4H10), 10% Propane (C3H8) And 15% Butene (C4H8) By Volume. ... Question: A fuel gas...
A Fuel Gas Consists Of 75% Butane (C4H10), 10% Propane (C3H8) And 15% Butene (C4H8) By Volume. ... Question: A fuel gas consists of 75% butane (C4H10), 10% propane (C3H8) and 15% butene (C4H8) by volume. It... A fuel gas consists of 75% butane (C4H10), 10% propane (C3H8) and 15% butene (C4H8) by volume. It is to be fed to the combustion chamber in 10% excess air at 25ºC, where it is completely burnt to carbon dioxide and water. The...
The same housemate that used all your hot water turned on your backyard grill and left...
The same housemate that used all your hot water turned on your backyard grill and left it on until the propane tank was empty. Assuming that you initially had a full tank of propane (5 gallons), what was the gross heat released from burning all of the propane? Propane (CsH.) has a standard enthalpy of -103.8 kJ/mol and a density of 4.23 lb/gal. See lecture notes for other standard enthalpy constants. Expert Q&A + e to wait to take water...
A fuel gas consists of 75% butane (C4H10), 10% propane (C3H8) and 15% butene (C4H8) by...
A fuel gas consists of 75% butane (C4H10), 10% propane (C3H8) and 15% butene (C4H8) by volume. It is to be fed to the combustion chamber in 10% excess air at 25ºC, where it is completely burnt to carbon dioxide and water. The flue gases produced are to be used to generate 5 bar steam from water at 90ºC. net calorific value (MJm-3) at 25oC Butane (C4H10) = 111.7MJm-3, Butene (C4H8) = 105.2 MJm-3. Propane (C3H8) = 85.8 MJm-3. air...
Concept Questions 1. Liquidity True or false: All assets are liquid at some price. Explain. 2....
Concept Questions 1. Liquidity True or false: All assets are liquid at some price. Explain. 2. Accounting and Cash Flows Why might the revenue and cost figures shown on a standard income statement not represent the actual cash inflows and outflows that occurred during a period? CHAPTER 2 Financial Statements and Cash Flow 35 3. Accounting Statement of Cash Flows Looking at the accounting statement of cash flows. what does the bottom-line number mean? How useful is this number for...
10 Smear Preparation A. Short-Answer Questions 1. How does smear preparation of cells from a liquid...
10 Smear Preparation A. Short-Answer Questions 1. How does smear preparation of cells from a liquid me medium? ar preparation of cells from a liquid medium differ from preparation of cells from a solid 2. Why is it important to limit the quantity of cells used to prepare a smear? 3. Describe the potential consequences of making a smear that is too thick. 4. For preparation of a smear on a slide, what is the purpose of heat fixation? What...
A home propane tank at is empty when its internal pressure is psi psi absolute pressure. If its volume of 125 ft^3 is filled to the point where its pressure is 75 psi absolute pressure(with all propane staying in the gaseous phase), how much mass has beenadded? Note that the molecular weight of propane is the same as that of carbondioxide, so the gas-specific constant for carbon dioxide given in the class text appendix can be used for propane. Also,...
General Chemistry II Part II. Fuel efficiency (6 pts) Fuel efficiency is the efficiency of the conversion of chemical energy contained in a fuel into work. Let's see which one of these fuels (hydrogen gas or liquid propane) will allow us to do more electrical work. Use the thermodynamic data provided to answer the following questions: 1. First determine the amount of heat released in direct combustion of (a) 1 mole of hydrogen gas; (b) 1 mole of liquid propane...
MHE Reader Propane, C3Hs(&), reacts with oxygen gas to produce carbon dioxide gas and water vapor. a) b) 2. Write a balanced equation including states of matter for the reaction. If 4.55 g of propane reacts with excess oxygen under standard conditions, calculate the theoretical yields (in grams) for both carbon dioxide and water, and · the total amount of heat released/absorbed when the reaction is complete. c) Ethanol is currently being used as a replenishable fuel alternative/supplement because it...
Week 11- Concept Questions Explain what type of forces, Intermolecular or Intramolecular are involved in the following processes. How do you know? How is this related to chemical vs physical changes? Forces overcome when ice melts Forces overcome when gaseous water is converted into hydrogen gas and oxygen gas Forces that prevent ice cubes from taking on the shape of their container Forces overcome when liquid water is vaporized
The same housemate that used all your hot water turned on your backyard grill and left it on until the propane tank was empty. Assuming that you initially had a full tank of propane (5 gallons), what was the gross heat released from burning all of the propane? Propane (CsH.) has a standard enthalpy of -103.8 kJ/mol and a density of 4.23 lb/gal. See lecture notes for other standard enthalpy constants. Expert Q&A + e to wait to take water...
Concept Questions 1. Liquidity True or false: All assets are liquid at some price. Explain. 2. Accounting and Cash Flows Why might the revenue and cost figures shown on a standard income statement not represent the actual cash inflows and outflows that occurred during a period? CHAPTER 2 Financial Statements and Cash Flow 35 3. Accounting Statement of Cash Flows Looking at the accounting statement of cash flows. what does the bottom-line number mean? How useful is this number for...
10 Smear Preparation A. Short-Answer Questions 1. How does smear preparation of cells from a liquid me medium? ar preparation of cells from a liquid medium differ from preparation of cells from a solid 2. Why is it important to limit the quantity of cells used to prepare a smear? 3. Describe the potential consequences of making a smear that is too thick. 4. For preparation of a smear on a slide, what is the purpose of heat fixation? What...
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