Calculate the amount of heat needed to boil 47.7g of octane (C8H18), beginning from a temperature of 56.3°C. Be sure your answer has a unit symbol and the correct number of significant digits.

Q: Mercury was once used in thermometers and barometers. When 69.7 J of heat are absorbed by 100.0 g of…

A: Given, Heat absorbed Q = 69.7 J change in temperature ΔT = 29.98 - 25 = 4.98 ℃ Mass m = 100 g

Q: Mercury freezes at -40oC.  How many Joules of heat energy would you need to heat 2.0 g of Hg(l) from…

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Q: mass

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Q: Calculate the amount of heat needed to boil 108. g of acetic acid (HCH,CO,), beginning from a…

A: Given data, Mass of acetic acid (m) = 108 g Begining temperature (T1) = 99.4 °C T1 = (99.4 + 273.15…

Q: Write T if true, and F if false 1. Heat flow is a directional quantity. Heat flows from a warmer…

A: Explained as follows

Q: A 70.0 gram metal bar is heated to 256 celsius then submerged into a well insulated calorimeter…

A: Given mass of metal bar Mb = 70g  Mass of water Mw = 50g  Complete solution is given below in next…

Q: Calculate the heat capacity, in joules and in calories per degree, of the following: (a) 28.4 g of…

A: Given, (a) 28.4 g of water (b) 1.00 oz of lead we are asked to calculate the heat capacity for…

Q: Two 20.0 g ice cubes at −17.0 ∘C are placed into 245 g of water at 25.0 ∘C. Assuming no energy is…

A: Given,Mass of two ice cubes, mice = 2 * 20.0 g = 40.0gMass of water, mwater = 245 gInitial…

Q: A student is using a calorimeter to determine the specific heat of a metallic sample. She measures…

A: Use the concept of heat lost by metal = heat gained by water to calculate specific heat of the…

Q: A sheet of gold weighing 10.3 g and at a temperature of 10.0°C is placed flat on a sheet of iron…

A: The amount of heat absorbed (or released) by fixed amount of a substance to change its temperature…

Q: Answer the following questions. Show complete solutions. Follow conventional way for significant…

A: Given: Work done w=45J The internal energy ( decrease in energy)= 23 J=-23J ( Since it is a decrease…

Q: An unknown substance with a mass of 45.12 absorbs 261.3 J of heat. Its temperature increases from…

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Q: Calculate the amount of heat needed to boil 184. g of acetic acid (HCH,CO,), beginning from a…

A: Let's assume that, the energy required to raise the temperature of acetic acid from its initial…

Q: "Mercury was once used in thermometers and barome-ters. When 46.9 J of heat are absorbed by 100.0 g…

A: To calculate the specific heat of mercury By using the formula,     Q = mC∆T C = specific heat…

Q: A sheet of gold weighing 10.6 g and at a temperature of 15.3°C is placed flat on a sheet of iron…

A: Mass of gold weight = 10.6 g Temperature of Gold = 15.3°C Mass of iron weight = 21.2 g  Temperature…

Q: Determine the amount of heat energy in joules required to raise the temperature of 7.40g of water…

A: Given:  Mass of water = 7.40 g  Initial temperature = 29°C Final temperature = 46°C Standard data:…

Q: The specific heat capacity of a substance is defined as the amount of energy needed to increase the…

A: Hey, since there are multiple questions posted, we will answer first question. Thus, first question…

Q: 4. A refrigerator is used to cool 4 litres of soft drink from room temperature (23 °C) to 4 °C. If…

A: Volume of soft drink = v = 4L Density of soft drink = 1015 kg/m3 Temperature initial = 23°C…

Q: Determine the total heat evolved in Joules in a solution of 19 mL of NAOH and 19 mL of HCI…

A: Given, Volume of NaOH = 19 mL Volume of HCl = 19 mL Initial temperature, Ti=26.8°C Final…

Q: amount of heat required to raise 1 g of water 1°C    a. BTU b. calorie c. joule d. kJ

A: The mass of water in gram = 1 g The temperature of water  = 1oC

Q: In the laboratory a student finds that it takes 19.7 Joules to increase the temperature of 10.3…

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Q: Ten pounds of CO2 at room temperature (80 °F) are stored in a fire extinguisher that has a volume of…

A:

Q: Calculate the quantity of heat (in Joules) required to raise the temperature of 20.0 g of water from…

A: Given that : Maas of water (m) = 20.0 g Initial temperature Ti = 25.1°C Final temperature Tf =…

Q: How much energy does it take to raise the temperature of  48g of liquid water by 43oC? Please round…

A: Given: Mass = 48 g Change in temperature = 43°C

Q: An electrical heater is used to supply 205.0 J of energy to a 20.0 g sample of silver (specific heat…

A: Given information:Mass of silver = 20.0 gInitial temperature = 305.0 KAmount of heat (q) = 205.0…

Q: A 100.0g sample of water at 25.30 degrees Celsius was placed in an insulated cup. Then 45.00g of…

A: Given that: Mass of water = 100.0 g Initial temperature of water = 25.30°C Mass of lead pellets =…

Q: Cyclohexanol C6H11OH is an organic compound that freezes at 26 degrees Celsius. How much energy is…

A: Given, Enthalpy of melting of cyclohexanol - 1.70 kJ/mol. Amount of cyclohexanol taken - 18.5 g…

Q: A solution is made by mixing 244.0 mL of ethanol initially at 12.9 °C with 244.0 mL of water…

A: Heat energy absorbed by ethanol = Heat energy released by water Heat energy released /absorbed =…

Q: An iron kettle weighing 1.43 kg contains 2.84 kg of water at 25.3°C. The kettle and water are heated…

A: Thermochemistry is branch of chemistry in which we deal with heat of reaction such as heat evolved…

Q: Two 20.0 g ice cubes at −10.0 ∘C are placed into 285 g of water at 25.0 ∘C. Assuming no energy is…

A: Mass of water = 285 g Temperature of water = 25˚C. Heat capacity of water = 75.3 JK-1mol-1 Heat lost…

Q: What is the final temperature of a system if 11.00 g of gold at 90.0°C is placed in 11.00 g of water…

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Q: What mass of water will change its temperature by 3.00 degrees C when 525 J of heat is added to it?

A: The answer to the following question is-

Q: A volume of 75.0 mL of H2O is initially at room temperature (22.00 Celcius). A chilled steel rod at…

A: Given:Volume of water = 75.0 mLDensity of water = 1 g/mL.Calculation for mass of water:

Q: Calculate the specific heat of a substance if 420 calories is needed to raise the temperature of…

A: Given,   specific heat capacity of a substance (s) = ? Amount of heat needed (Q) = 420 cal Mass of a…

Q: An engineering student wants to study the heat transfer between a 50 g of heated block of iron (cFe…

A: Assume that the water-horseshoe system is thermally isolated (insuIated) from the environment for…

Q: Use this value to calculate the mass of ice required to cool 325 mL of a beverage from room…

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Q: Calculate the amount of heat needed to boil 156. g of ethanol (CH,CH,OH), beginning from a…

A:

Q: What quantity of heat is required to raise the temperature of 55.0 g of gold from 32 degree Celsius…

A: Heat required to raise the temperature of solids is given by  Q = mCΔT  where m = mass  C = specific…

Q: Which of the following enthalpy changes is also the standard enthalpy of fromation? O42 Mg(s) +…

A: The standard enthalpy of formation of a compound is the enthalpy change during the formation of 1…

Q: A block of copper(0.230+mol) starts at 15.5 degrees Celsius. What is the final temperature of cu if…

A: In order to find the final temperature we first write down the given data: Number of moles of…

Q: 75: Octane (C8H18) is a component in gasoline that burns according to the equations: C3H12(0) +…

A:

Q: water in a container at a temperature of 30 °C. Ciron = 0.444 J/g °C Cwater = 4.184 J/g °C Pwater=1…

A: Mass of iron = 20 g Initial temperature of iron = 120oC Volume of water = 300 mL Initial temperature…

Q: The specific heat capacity of silver is 0.2386 J/g °C. Assuming no loss of heat to the surroundings…

A: The specific heat capacity of silver is = 0.2386 J/goC The mass of silver is = 100.0 g The initial…

Q: Calculate the amount of heat needed to boil 193. g of octane (C3H13), beginning from a temperature…

A: The amount of heat needed for boiling of octane can be calculated by using following formula - Q = m…

Q: Calculate the heat necessary to increase temperature of a) 100. g of water b) 2.00 mol H2O(l) from…

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Q: Determine the total heat evolved in Joules in a solution of 20 mL of NaOH and 19 mL of HCI…

A:

Q: Determine the specific heat of 122 grams of an unknown substance if it absorbed 270 kJ of heat as it…

A: Specific heat of a substance can be defined as the amount of heat required to raise the temperature…

Q: Calculate the specific heat of a metal if 45.0 grams of the metal at 100.0 °C, when placed into…

A:

Q: The final temperature of a gold nugget (mass=376g) that starts at 288 K and loses 4.85 kJ of heat to…

A: Specific heat capacity is the amount of heat that is required to rise a temperature of 1 kg…