How many moles of KCIO3 must be reacted according to the following balanced chemical reaction to transfer -34.2 kJ of heat? 2 KCIO3(s) → 2 KC((s) + 3 O2(g) AH = -89.4 kJ %3D

Q: 2C2H6 (g) + 7O2 (g) → 4CO2(g) + 6H2O (g) ΔH = -1560 kJ How much heat (in kJ) is released if 11.1 g…

A: Moles of ethane=11.1/30=0.37

Q: A system undergoes a process consisting of the following two steps: Step 1: The system absorbs 71 J…

A: The relationship between the parameters is given as where w = work and q = heat

Q: An unknown metal with mass (2.480x10^1) g absorbs (6.15x10^1) J of heat. The temperature of this…

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Q: The complete combustion of a small wooden match produces approximately 512 cal of heat. How many…

A: Given, The approximate amount of heat produced by the combustion of a small wooden match = 512 cal…

Q: Charcoal is primarily carbon. What mass of CO2CO2 is produced if you burn enough carbon (in the form…

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Q: A system undergoes a process consisting of the following two steps: Step 1: The system absorbs 73 J…

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Q: A system initially has an internal energy U of 501 J. It undergoes a process during which it…

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Q: How many grams of C,H, liquid must decompose according to the following chemical equation to…

A: Given :-  C6H6(l) ---> 3C2H2(g)  ΔH = 630 kJ To calculate :-  Amount of C6H6 that will be…

Q: solve the attached

A: First, calculate the number of moles of N2: No of moles = Mass/Molar mass = 68.0g/(28.0gmol-1) =…

Q: The combustion of butane, C4H10, is given as: 2C4H10(g) + 1302(g) → 8CO2(g) + 10H20(1), AH° = -5314…

A: Given , ∆H ° = -5314 KJ

Q: An automobile engine generates 2228 Joules of heat that must be carried away by the cooling system.…

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Q: When determining the heat capacity of the unknown metal we assumed the heat capacity of water has a…

A: When determining the heat capacity of the unknown metal we assumed the heat capacity of the water…

Q: 9.2  An automobile engine provides 566 Joules of work to push the pistons and generates 2142 Joules…

A: In this question, we will calculate the change in internal energy ( ∆E ) of the system.  You can see…

Q: How much heat is needed to raise the temperature of 13.0g of iron from 19.00C to 100.00 °C? The…

A: Please note- As per our company guidelines we are supposed to answer only one question. Kindly…

Q: How many grams of C̟H, liquid must decompose according to the following chemical equation to…

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Q: How much heat (in kJ) will be released (AH) if 1.20 mol of SrO is mixed with 0.677 mol of CO2 in the…

A: According to balanced chemical equation, 234 kJ of heat is released when 1 mole of SrO reacts with 1…

Q: How much heat is generated if 20 grams of hydrogen is consumed in the following reaction?   2H2…

A: Given that:  Combustion reaction of H2 2H2 + O2 .....> 2H2O + 570KJ  In this reaction 570KJ…

Q: The combustion of butane, C4H10, is given as: 2C4H10(g) + 1302(g) 8CO2(g) + 10H,O(I), AH° = -5314…

A: Given values -> 2C4H10+13O2-> 8CO2+10H2O ∆H°= -5314kj

Q: In a given gaseous reaction, 72 J of heat is absorbed and AE = -442 J. (a) Calculate w (work). work…

A: First law of thermodynamics  When heat absorbed by a system  Q=∆E+W Q=heat absorbed by a system…

Q: One mole nitrogen oxide, NO, reacts with oxygen gas to produce a brown gas, NO2. a. How many moles…

A: The standard enthalpy of reaction (∆Hr) is calculated as the difference of the sum of enthalpies of…

Q: If a system has 4.00×102 kcal4.00×102 kcal of work done to it, and releases 5.00×102 kJ5.00×102 kJ…

A: Given, Work done to the system = 4.00*102kcal. Heat released = 5.00*102kJ.

Q: In the following reaction, how many moles of CH;OH are required to give off 5766 kJ of heat? 2 CH;OH…

A: In the given question we are assuming that system is closed and pressure is constant. So released…

Q: The value of ΔH° for the reaction below is +128.1 kJ: CH3OH (l) → CO (g) + 2H2 (g) How many kJ of…

A: Given: The reaction is as follows, CH3OH (l) → CO2(g) + 2H2(g)          ∆H° = +128.1 kJ Mass of…

Q: 8. How much heat, in kilojoules, is needed to produce 1850 grams of ammonia (NH3), according to the…

A: Formula used :- Number of moles(n) = given mass(w)/Molar mass (M)      n= w/M

Q: How many moles of H2 are required to produce -2151 kJ of heat in the following reaction? N2 (g) + 3…

A: The balanced reaction taking place is given as, =>

Q: The value of ΔH° for the reaction below is 128.1 kJ CH3OH (l) --> CO (g) + 2H2 (g)  How may kJ of…

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Q: How much heat will be released (AH) if 0.5263 mol of NH3 are mixed with 0.20 mol of O, in the…

A: Balanced equation: 4NH3 (g) + O2 (g) --------->  2N2H4 (g)  +  2H2O (g)    ∆H° = -286 kJ/mol This…

Q: 200 grams

A: A) moles of NH3 = 200g / 17gmol-1 = 11.765mol  B) moles of O2 = 450g / 32gmol-1 = 14.063mol

Q: How many moles of H, are required to produce -4551 kJ of heat in the following reaction? N, (g) + 3…

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Q: How many moles of KClO₃solid must be reacted according tothe following balanced chemical reaction to…

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Q: In the following reaction, how many moles of CH;OH are required to give off 5766 kJ of heat? 2 CH;OH…

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Q: 4. Sodium carbonate is a white powder used in the manufacture of glass. When hydrochloric is added…

A: The chemical equation can be written as: 2H+(aq)+CO32-(aq)→CO2(g)+H2O(l) To calculate the ΔHº for…

Q: The reaction between sodium metal and chlorine gas produces 822 kJ of heat energy for every chlorine…

A: The number of moles of any substance can be obtained by dividing the mass by molar mass which may be…

Q: Combustion of table sugar produces CO2(g) and H2O(l). When 1.46 g table sugar is combusted in a…

A: Given,  The mass of sucrose burnt = 1.46 g Heat (q) = 24 kJ. a.Assuming that table sugar is pure…

Q: & How much work is done by or on the system (state which), in kcal, in a reaction if the internal…

A: Given: Mass of water = 185 g. Initial temperature of water = 20.0 oC Final temperature of water =…

Q: absorbs 1.357E3 J of heat. The final temperature of the sand is 6.7E1 °C. What is the mass (in g) of…

A: Given: Initial temperature = 2.24E1 °C Final temperature = 6.7E1 °C Amount of heat absorbed =…

Q: If a system has 5.00 x 102 kcal of work done to it, and releases 5.00 x 102 kJ of heat into its…

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Q: 2. A gas gains 15.0 kJ of heat and then performs 5.0 kJ of work. Calculate the AE of the gas.

A: FIRST LAW OF THERMODYNAMICS: Energy can neither be created nor destroyed , energy can only be…

Q: In the following reaction, how many moles of CH3OH are required to give off 5576 kJ of heat? 2 CH;OH…

A: To determine Moles of CH3OH required to give off heat 5576 KJ

Q: A chemical system produces 170. kJ of heat and does 18 kJ of work. What is AE for the surroundings?…

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Q: If 115 cal are added to 51.4 g of solid iron, what is the change in temperature of the iron? The…

A: Given: Heat added = 115 cal Mass of solid iron = 51.4 g Specific heat of iron is 0.11 cal/goC

Q: "he combustion of fuel in a piston cylinder causes an internal energy change of -2.821E3 kJ. The…

A: According to firstaw of thermodynamics change is internal.energy is sum of heat change and work .

Q: The oxidation of glucose, C6H12O6(s), is described by the following thermochemical equation:…

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Q: How much heat (in kJ) will be released (AH) if 0.4501 mol of NH3 are mixed with 0.200 mol of O, in…

A: Applying concept of limiting reagent and heat released.

Q: How many kilojoules of heat are produced when 34.0 g of Fe,O3 reacts with an excess of CO according…

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Q: Consider the following reaction: 2Mg(s)+O2(g)⟶2MgO(s)ΔH∘=−1203kJ What mass of magnesium must be…

A: Magnesium reacts with oxygen to form magnesium oxide. The equation for the balanced chemical…

Q: If a system has 475 kcal of work done to it, and releases 5.00 x 102 kJ of heat into its…

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Q: A 27.7 g sample of ethylene glycol, car radiator coolant,loses 688 J of heat. What is the initial…

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Q: In the following reaction, how many moles of CH,0H are required to give off 3791 kJ of heat? 2 CH,OH…

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Q: Charcoal is primarily carbon. What mass of CO2 is produced if you burn enough carbon (in the form of…

A: The mass of CO2 produced when 5.4 x 102 kJ of energy is produced is calculated as,