hboardMy HomeC OWLV2 | Online teaching and learning resource from Cengage Lear.[References]INTERACTIVE EXAMPLE Converting Units: Any Unit to Another UnitGasoline at a gas station in Canada costs 1.13 Canadian dollars (CAD) per liter. If the exchange rate between US and Canadian dollars is 1 US dollar (USD) = 1.15 CAD, whatis the cost of the gasoline in US dollars per gallon? 1 gallon = 3.78 L.USD/galShow Tutor Stene

The cost of gasoline in Canada is = 1.13 dollar (CAD)/liter The exchange rate of US and Canadian…

Answered: tO Another Unit Gasoline at a gas…

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter4: Energy And Chemical Reactions

Section: Chapter Questions

Problem 123QRT

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Suppose that you are closing a cabin in the north woods for the winter and you do not want the water in the toilet tank to freeze. You know that the temperature might get as low as 30. C, and you want to protect about 4.0 L water in the toilet tank from freezing. Calculate the volume of ethylene glycol (density = 1.113 g/mL; molar mass = 62.1 g/mol) you should add to the 4.0 L water.
During a recent winter month in Sheboygan, Wisconsin, it was necessary to obtain 3500 kWh of heat provided by a natural gas furnace with 89% efficiency to keep a small house warm (the efficiency of a gas furnace is the percent of the heat produced by combustion that is transferred into the house). (a) Assume that natural gas is pure methane and determine the volume of natural gas in cubic feet that was required to heat the house. The average temperature of the natural gas was 56 F; at this temperature and a pressure of 1 atm, natural gas has a density of 0.68 1 g/L. (b) How many gallons of LPG (liquefied petroleum gas) would be required to replace the natural gas used? Assume the LPG is liquid propane [ C3H8 : density, 0.5318 g/mL; enthalpy of combustion, 2219 Id/mo for the formation of CO2(g) and H2O(l) ] and the furnace used to burn the LPG has the same efficiency as the gas furnace. (c) What mass of carbon dioxide is produced by combustion of the methane used to heat the house? (d) What mass of water is produced by combustion of the methane used to heat the house? (e) What volume of air is required to provide the oxygen for the combustion of the methane used to heat the house? Air contains 23% oxygen by mass. The average density of air during the month was 1.22 g/L. (f) How many kilowatt—hours ( 1kWh=3.6106 J) of electricity would be required to provide the heat necessary to heat the house? Note electricity is 100% efficient in producing heat inside a house. (g) Although electricity is 100% efficient in producing heat inside a house, production and distribution of electricity is not 100% efficient. The efficiency of production and distribution of electricity produced in a coal-fired power plant is about 40%. A certain type of coal provides 2.26 kWh per pound upon combustion. What mass of this coal in kilograms will be required to produce the electrical energy necessary to heat the house if the efficiency of generation and distribution is 40%?
1-86 The specific heats of some elements at 25oC are as follows: aluminum = 0.215 cal/g · oC; carbon (graphite) = 0.170 caI/g oC; iron = 0.107 cal/g mercury = 0.033 1 caI/g oC. (a) Which element would require the smallest amount of heat to raise the temperature of 100 g of the element by 10oC? (b) If the same amount of heat needed to raise the temperature of 1 g of aluminum by 25oC were applied to 1 g of mercury, by how many degrees would its temperature be raised? (c) If a certain amount of heat is used to raise the temperature of 1.6 g of iron by 10oC, the temperature of 1 g of which element would also be raised by 10oC, using the same amount of heat?
What is the difference between (a) mass and density? (b) an extensive and an intensive property? (c) a solvent and a solution?
A 15.5 g sample of sodium carbonate is added to a solution of acetic acid weighing 19.7 g. The two substances react, releasing carbon dioxide gas to the atmosphere. After reaction, the contents of the reaction vessel weigh 28.7 g. What is the mass of carbon dioxide given off during the reaction?
Carl is approaching the Canadian border on a trip from Vermont to Montreal, Canada, and the gas in his tank is low. He wants to determine if it would be more cost efficient to buy gas before or after crossing the border. He consults Gas Buddy and finds that the cost of gas in the US is 2.45 USD per gallon, while just across the border it is $1.40 CAD per liter. The currency exchange rate is $0.750 USD per $1.000 CAD. How much more gas (in gallons) will he get for $20 USD if he buys the gas before crossing the border instead of buying it in Canada? (1.000 liter = 0.264 US gallons).
What is the most common way that energy is exchanged with the environment during a chemical reaction? a b Through the creation of water molecules By burning oxygen с Through the production of electricity d By the production or absorption of heat A__ is a device that is designed so that there is no exchange of heat between the system and surroundings. a barometer b calorimeter с chromatograph d spectrophotometer
Electrical energy is measured in kilowatt hours, kWH. A watt is 1 joule per second, a kilowatt is 1000 joules per second. An hour has 3600 seconds, therefore 1kWh=3.6x10^6 joules. How many kWh are there in a meal that is 437 Cal?
Jollibee Burger Item Sodium(mg) Fat(g) Calories Item cost($) Beef Patty 50 17 220 $0.25 Bun 330 9 260 $0.15 Cheese 310 6 70 $0.10 Onions 1 2 10 $0.09 Pickles 260 0 ,. 5 $0.03 Lettuce 3 0 4 $0.04 Ketchup 160 0 20…
Calculate the additional life insurance needs for an individual whose income stream was $90,000, the income spent on the individual was 22% of the income stream, where that income stream would have been needed for 30 Years. Assume a 6% return (after tax and inflation) is desired and that there already is $200,000 life insurance provided for the income-earner by his/her employer. Which solution most closely approximates the additional insurance needed? O $766,291 O $871,115 O $571,115 O $471,115 $671,115 13
A catalytic converter contains between 3.00 and 7.00 g of Pt. The current price of platinumis $26.89 per ounce. What is the range in cost of Pt in one catalytic converter?
Below are some potentially useful conversion factors. 1 lb 1 gallon 1 quart = = = 453.6 g 4 quartts 0.946 L -33 The precipitation of aluminum hydroxide, Al(OH)3 (Ksp = 1.3 × 10−³³), is commonly used to purify potable water. It forms a spongy precipitate that settles slowly, carrying even very small suspended particles down with it, thereby removing all finely divided matter and most microbes. Part A The Ksp can be used to find the minimum concentration of hydroxide ions required to start the precipitation of Al(OH)3 given a concentration of aluminum ions, and thus determine the pH above which this precipitation occurs. Calculate this pH value if 4.40 lb of aluminum sulfate, Al2(SO4)3, is added to 2150 gallons of water (with a negligible change in volume). Express your answer numerically to two decimal places after the dot.

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tO Another Unit Gasoline at a gas station in Canada costs 1.13 Canadian dollars (CAD) per liter. If the exchange rate between US and Canadian dollars is 1 US dollar (USD) - 1.15 CAD, what is the cost of the gasoline in US dollars per gallon? 1 gallon 3.78 L. USD/gal