What mass of natural gas (CH4) must burn to emit 267KJ of heat? CH4 (g) + 2 O2 (g) -------> CO2 (g)+ H2O (g)                          (triangle) Ho rxn = -1790 KJ

Q: A coffee-cup calorimeter contains 70 mL of water with an initial temperature of 24.9°C. An unknown…

A: Given that, For water, Volume of water = 70 ml Density of water = 1 g ml-1 Mass of water = 70ml × 1…

Q: A coffee-cup calorimeter contains 20 mL of water with an initial temperature of 24.8°C. An unknown…

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Q: THERMODYNAMICS: The combustion of 1.00 mol of glucose (C6H1206) liberates 2820 kJ of heat. If 1.14 g…

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Q: THERMODYNAMICS: The combustion of 1.00 mol of glucose (C6H1206) liberates 2820 kJ of heat. If 1.67 g…

A: Given: Heat of combustion of glucose = 2820 KJ/mol. Mass of glucose burned = 1.67 g. Initial…

Q: 10. You need a water bath at 37.0 °C. The temperature of the cold tap water is 22.0 °C and the…

A: When water at two different temperatures is mixed, the temperature of cold tap water increases and…

Q: When a sample titanium was supplied 1.00kj of energy, the temp rose to 103.5 degrees celcius. If the…

A: Given information, Amount of heat supplied (Q) = 1.00 kJ = 1*103 J Change in temperature (∆T) =…

Q: 9. If a 85.0°C iron rod that weighs 1.20 kg was placed in 15.2 L of water at 20.0°C, what is the…

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Q: THERMODYNAMICS: The combustion of 1.00 mol of glucose (C6H1206) liberates 2820 kJ of heat. If 1.65 g…

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Q: A coffee-cup calorimeter contains 50.0 g of water at 60.51°C. A 12.4 g piece of graphite at 24.21°C…

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Q: Suppose you heat a metal object with a mass of 30.0 g to 95.5 °C and transfer it to a calorimeter…

A: Given information is as follows: The mass of the metal = 30 g The initial temperature of the metal =…

Q: THERMODYNAMICS: The combustion of 1.00 mol of glucose (C6H1206) liberates 2820 kJ of heat. If 1.38 g…

A: Given:  Heat released on combustion of 1 mol glucose = 2820 KJ  Mass of glucose = 1.38 gm  Mass of…

Q: The propane fuel (C3H8) used in gas barbeques burns accordingto a thermochemical equation:C3H8(g) +…

A: The reaction is carried out in more than one step then the sum of all the steps gives the overall…

Q: THERMODYNAMICS: The combustion of 1.00 mol of glucose (C3H12O8) liberates 2820 kJ of heat. If 1.75 g…

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Q: 4.18 J/g."C). 5. A 295-g aluminum engine part at an initial temperature of3.00°C absorbs 85.0 kJ of…

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Q: THERMODYNAMICS: The combustion of 1.00 mol of glucose (C6H1206) liberates 2820 kj of heat. If 1.49 g…

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Q: How many Joules of energy are required to heat a 19.3 gram lead ball from 25.0˚C to 47.7˚C? (The…

A: The specific heat of lead states that 0.128 Joule of heat is needed for an increase in temperature…

Q: Pls help ASAP

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Q: -A block of iron metal weighing 5.00 grams with a temperature of 75.0°C was immersed in a beaker…

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Q: How much heat (J) is required to raise the temperature of 24.0 mL of Iodine from 30.00 °C to 36.70…

A: Given, Volume of iodine is 24.0 mL  Initially at 30.00 °C Final temperature became --- 36.70 °C How…

Q: 1. What mass of methane (CH4) must be burned to release 185 kJ of heat?        CH4(g) + 2O2(g)…

A: Molar mass of CH4 = 1 * atomic mass of C + 4 * atomic mass of H = (1 * 12 + 4 * 1) g/mole = 16…

Q: A bottle contains 905 grams of chloroform, CHCI3, with a specific heat capacity of 0.96 J/(g.°C).…

A: Given :-  m = 905 g  Specific heat capacity (c)  = 0.96 J/(goC)  T1 = 21.0 oC  T2 = 30.0 oC  To…

Q: THERMODYNAMICS: The combustion of 1.00 mol of glucose (C6H1206) liberates 2820 kJ of heat. If 1.75 g…

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Q: Calculate the energy required to heat 486.0 mg of silver from -9.6 °C to -3.7 °C. Assume the…

A: Q = m . s . ∆T Where, Q = heat absorbed;  m = mass of metal, s = specific heat of metal and ∆T =…

Q: A coffee-cup calorimeter contains 70 mL of water with an initial temperature of 24.9°C. An unknown…

A: The heat absorbed (q) by the water can be obtained by the multiplication of mass (m) of water with…

Q: 11. A 45.0 g block of iron that has an initial temperature of 340 °C and a 45.0 g block of gold that…

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Q: p **** THERMODYNAMICS: The combustion of 1.00 mol of glucose (C6H1206) liberates 2820 kJ of heat. If…

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Q: THERMODYNAMICS: The combustion of 1.00 mol of glucose (C6H1206) liberates 2820 kJ of heat. If 1.17 g…

A: Given: Heat of combustion of glucose = 2820 KJ/mol. Mass of glucose burned = 1.17 g. Initial…

Q: THERMODYNAMICS: The combustion of 1.00 mol of glucose (C6H1206) liberates 2820 kJ of heat. If 1.98 g…

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Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 693.0 g sample…

A: given, the mass of the sample = 693.0 g the temperature rises from initial temperature, T1 = 17.1 oC…

Q: The specific heat capacities for several substances are shown in the table. Substance Specific Heat…

A: Specific Heat Capacity is the amount of heat required to change the temperature of a unit mass…

Q: What mass of natural gas (CH4)  must burn to emit 265 kJ  of heat? CH4(g)+2O2(g)→CO2(g)+2H2O(g)…

A: To solve this problem we have to consider the given thermochemical equation . According to this…

Q: THERMODYNAMICS: The combustion of 1.00 mol of glucose (C6H1206) liberates 2820 kJ of heat. If 1.58 g…

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Q: The thermite reaction in which aluminum metal reacts with iron(III) oxide to produce a spectacular…

A: The reaction is as follows: 2Al(s)+Fe2O3(s)--------->Al2O3(s)+2Fe(l).          ΔH =  -202.9 kcal.…

Q: joules of energy

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Q: The heat of combustion of octane, C8H18 , can be measured in a way similar to the method you used to…

A: Heat capacity is given by,

Q: What mass of natural gas (CH4) must you burn to emit 267kJ of heat? CH4(g)+2O2(g)=CO2(g)+2H20(g)…

A: Number of moles of methane reacted can be calculated as follows,

Q: The specific heat of toluene, C7H8, is 1.13 J/g-K. How many joules of heat are needed to raise the…

A: Given :-  Specific heat of toluene = 1.13 J/g.K  Mass of toluene = 40.0 g  Initial temperature =…

Q: A 350g sample of aluminum is taken out of the freezer at –20oC and placed into 500g of water at 14.6…

A: Given Mass of water = 500 g Initial temperature = 14.6°C Final temperature = 10°C Mass of…

Q: An 80.0 g sample of metal, initially at 96.0°C, is placed into 150. g of water initially at 26.0°C…

A: Interpretation: An 80.0 g sample of metal, initially at 96.0°C, is placed into 150.0 g of water…

Q: A bucket full of water increased in temperature from 25.0 oC to 27.28 oC after absorbing 1,982.32…

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Q: 1. A student is determining the enthalpy of solution for ammonium nitrate by adding ammonium nitrate…

A: A calorimeter is used to find the amount of heat involved in a chemical reaction. The knowlede of…

Q: THERMODYNAMICS: The combustion of 1.00 mol of glucose (C6H1206) liberates 2820 kJ of heat. If 1.76 g…

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Q: A piece of unknown substance weighs 55.8 g and requires 1910 J to increase its temperature from…

A: (a)Calculate the change in temperature:

Q: A solution is made by mixing 232.0 mL of ethanol initially at 12.7 ∘C with 232.0 mL of water…

A: According to Law of calorimetry,amount of heat released by the substance having higher temperature…

Q: 5. A 465 g chunk of iron is removed from an oven and plunged into 375 gwater in an insulated…

A: The heat transferred during the reaction can be determined the equation, q = mc∆TThe temperature of…

Q: A lead fishing weight has a mass of 57 g. The weight absorbs 146 cal of heat. If its initial…

A: The specific heat of a compound suggests the amount of heat needed for per unit mass of the compound…

Q: An chemistry professor stops in every day and orders 250 ml of Sumatran coffee at precisely 95°C. He…

A: Given : Volume of coffee = 250 mL Initial temperature of coffee = 95 °C Initial temperature of milk…

Q: C3H6O) is quite flammable. If a bottle of nail polish (187 mL) burns, how much heat is released? The…

A: The mass of acetone=187 mL×0.788gmL=147.36gin a chemical reaction, some bonds are broken and some…

Q: In an experiment, 138 g of graphite is heated to 90.0°C and then quickly transferred to 150.0 g of…

A: Since whatever heat is lost by graphite, is used by the water and calorimeter. Hence heat lost by…