You weigh a dry flask, and place a chunk of solid into it, then weigh it again. You then fil the flask to the top with water and weigh the full flask Finally, you take the solid out, fil the flask to the top with water and weigh it once more. Mass of flask in g) 56.89 Mass of flask plus solid (e) 133.6 Mass of flask plus solid and water (g) 146.26 Mass of flask filled with water Ig) 84.54 Density of water at the measured water temperature (g/cc) 0.992 Calculate the following Volume of the flask (not occupied by the solid) in (cc)

You weigh a dry flask, and place a chunk of solid into it, then weigh it again. You then fil the flask to the top with water and weigh the full flask Finally, you take the solid out, fil the flask to the top with water and weigh it once more. Mass of flask in g) 56.89 Mass of flask plus solid (e) 133.6 Mass of flask plus solid and water (g) 146.26 Mass of flask filled with water Ig) 84.54 Density of water at the measured water temperature (g/cc) 0.992 Calculate the following Volume of the flask (not occupied by the solid) in (cc)

Introductory Chemistry For Today

8th Edition

ISBN:9781285644561

Author:Seager

Publisher:Seager

Chapter6: The States Of Matter

Section: Chapter Questions

Problem 6.78E

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Similar questions

How much heat, in joules and in calories, must be added to a 75.0g iron block with a specific heat of 0.449 Jig C to increase its temperature from 25 C to its melting temperature of 1535 C?
How much heat, in joules and in calories, is required to heat a 28.4-g (1-oz) ice cube from 23.0 C to 1.0 C?
9.81 A substance has the following properties: Hfusion = 10.0 kJ/mol Hvaporiztion = 20.0 kJ/mol Cp(solid) = 30 J/mol/K Cp(liquid) = 60 J/mol/K Cp(gas) = 30 J/mol/K Which of the four graphs below would he most consistent with these data? Explain how you are able to identify the correct graph.
Hypothetical elements A2 and B2 react according to the following equation, forming the compound AB. A2(aq)+B2(aq)2AB(aq);H=+271kJ/mol If solutions A2(aq) and B2(aq), starting at the same temperature, are mixed in a coffee-cup calorimeter, the reaction that occurs is a exothermic, and the temperature of the resulting solution rises. b endothermic, and the temperature of the resulting solution rises. c endothermic, and the temperature of the resulting solution falls. d exothermic, and the temperature of the resulting solution falls. e exothermic or endothermic, depending on the original and final temperatures.
A book is held 6 feet above the floor and then dropped. Which statement is true? a.The potential energy of the book is converted to kinetic energy. b.The potential energy of the book is destroyed. c.Kinetic energy is created. d.The total energy of the system will not be conserved.
A piece of iron was heated to 95.4C and dropped into a constant-pressure calorimeter containing 284 g of water at 32.2C. The final temperature of the water and iron was 51.9C. Assuming that the calorimeter itself absorbs a negligible amount of heat, what was the mass (in grams) of the piece of iron? The specific heat of iron is 0.449 J/(gC), and the specific heat of water is 4.18 J/(gC).
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%?

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