A Snickers candy bar has 120 kcals attributed to its fat content. What is this energy in kilojoules (kJ)? (4.184 J = 1 calorie)

Q: Adding 5.47 g of to 140 g of water in a coffee-cup calorimeter (with stirring to dissolve the salt)…

A: According to the question, we are adding 5.47 g of NH4NO3 to 140 g of water in a coffee-cup…

Q: In a coffee-cup calorimeter, 24,5 g sample of solid KCIO, is dissolved in 200.0 g of water at 15.0…

A: given mass of KClO3 = 24.5 g mass of water = 200 g specific heat = 4.184 J/g-°C T1 = 15°C T2 = 6.6°C…

Q: e the information to answer the following questions. This reaction is... Suppose 41.0 g of NH3…

A: The given data: 2NH3(g) ==> N2(g) + 3H2(g)∆H° = 160 KJ When ∆H° is positive,  it means heat is…

Q: Sodium chloride, the table salt (NaCl) is added in cooking to enhance the flavor of the food.  When…

A:

Q: A student places 125g of liquid water, H201), at 24 °C into a coffee-cup calorimeter, and then adds…

A: Here the system is showing two change , one is the dissolution of KBr and another one is for…

Q: An aluminum kettle weighs 1.05 kg.(a) What is the heat capacity of the kettle?(b) How much heat is…

A: Specific heat- It is the amount of heat required to raise the temperature of 1g of substance by 10…

Q: A chemist measures the energy change AH during the following reaction: 2 HgO(s) → 2 Hg(1) + O₂(g)…

A: In an exothermic reaction, heat is released, and in an endothermic reaction, heat is absorbed.

Q: 3. When 1.010 g sucrose (C12H22011) undergoes combustion in a bomb calorimeter, the temperature…

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Q: Q.4. In a calorimetry experiment, a 0.550 g piece of aluminum (specific heat capacity=0.897 J/g K)…

A: Thus, the heat released or absorbed is calculated using the following equation, = m×s×∆T   m = mass…

Q: 1). A reaction was performed in a coffee cup calorimeter with an assumed calorimeter constant of…

A: Since you have posted multiple questions, we'll answer the first one. If yo want any other questions…

Q: What is the heat of a reaction, in joules, with a total reaction mixture volume of 57.5 mL if the…

A: Density of the mixture = 1 g/ml Volume of the mixture = 57.5 ml Mass of the mixture = Density of the…

Q: 4. How much work is done by or on the system (state which), in kcal, in a reaction if the internal…

A: To calculate the work done by or on the system , we would Calculate value and sign of w using first…

Q: The reaction for the combustion of propane is kcal (DOʻHT + (8) 0E – (3)OS + (3)*H°Ɔ mol AH = -526.3…

A: Given, C3H8 (g) + 5O2 (g) → 3CO2 (g) + 4H2O (l) ∆H = - 526.3 kcal/mol Note: negative sign (-)…

Q: 2. The major source of aluminium in the world is bauxite (mostly aluminium oxide). The thermal…

A: Since you have asked multiple question, we will solve the first question for you.If you want any…

Q: You mix 208 ml of 0.291 M LIOH with 208 ml of 0.536 M HF in a coffee-cup calorimeter, and the T of…

A: Calorimeters are used for the determination of heat of reaction. For a coffee-cup calorimeter the…

Q: We allow 73 g of oxygen to react with 85 g of ethane.  The reaction is shown below.  Since the heat…

A: Given - Balanced thermodynamical Reaction -  C2H6 (g) + 7/2 O2 (g) → 2 CO2 (g) + 3 H2O (g) ,…

Q: A 1.99 g sample of a soluble salt dissolves in 23.8 mL of water in a coffee cup calorimeter.  When…

A: Given, mass of sample of salt m = 1.99 g increase in temperature = 24.3 °C specific heat of solution…

Q: A chemist measures the energy change AH during the following reaction: 2 H₂O(l) → 2 H₂(g) + O₂(g)…

A: In this question we have identify the given reaction is endothermic or exothermic and calculate the…

Q: In a coffee-cup calorimeter, 24.5 g sample of solid KCIO, is dissolved in 200.0 g of water at 15.0…

A: mass of KClO3 = 24.5 g molar mass of KClO3 = 122.55 g/mol specific heat = 4.184 J/g-°C Change in…

Q: What is the change in internal energy for a system that performs 213 kJ of work on its surroundings…

A: Given, System performs 213 KJ of work on its surrounding And system loses 79 KJ of heat in the…

Q: 12. An aluminum kettle weighs 1.05 kg.(a) What is the heat capacity of the kettle?(b) How much heat…

A: (a) Given that mass of aluminium kettle =1.05 kg = 1050 g Now, heat capacity is explained as the…

Q: A chemist measures the energy change AH during the following reaction: 2 NH3(g) → N₂(g) + 3H₂(g) ΔΗ=…

A:

Q: A chemist measures the energy change AH during the following reaction: 2 H₂O(1)→ 2 H₂(g) + O₂(g) Use…

A: In an exothermic reaction, heat is released and in an endothermic reaction, heat is absorbed.

Q: In a coffee-cup calorimeter, 23.8 g sample of solid KBr is dissolved in 100.0 g of water at 15.0 °C.…

A: Given mass of water = 100 g Mass of KBr = 23.8 g Molar mass of KBr = 119 g/mol specific heat (C) =…

Q: Adding 5.00 g of to 140 g of water in a coffee-cup calorimeter (with stirring to dissolve the salt)…

A: The enthalpy change ΔH is the heat of solution (qrxn) per mole of solute (n). i.e.…

Q: 4. A 10.0 gram piece of Al, originally at 100°C, is dropped into a calorimeter cup containing 100.0…

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Q: Magnesium reactions with HCl according to the equation below. When 0.103g of Mg(s) is combined with…

A:

Q: For the combustion of methane(CH4)   CH4 (g)  + 2 O2 (g)  -->  CO2 (g) + 2H2O (g)       Δ H = -882…

A: In a thermochemical equation, the term, ∆H , represents the change in heat energy per mol reaction.…

Q: A 5.71 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

A: Mass of unknown salt = 5.71 gMolar mass of unknown salt = 116.82 g/molAmount of water = 150.00…

Q: When a 7.99-g sample of gaseous hydrogen bromide dissolves in 32.4 g of water in a coffee-cup…

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Q: metal X =48.1g; specific heat capacity =0.228 J/C If metal X is heated to 95.1C and put into a…

A:

Q: In a coffee-cup calorimeter, 100 mL of 1.0 M NaOH and 100.0 mL of 1.0 M HCI are mixed. Both…

A: Molarity of NaOH = 1.0 M  Volume of NaOH solution = 100.0 mL = 0.100 L  Molarity of HCl = 1.0 M…

Q: The addition of 3.15 g of Ba(OH)₂ 8H₂O to a solution of 1.52 g of NH SCN in 100 g of water in a…

A:

Q: A)When 1 mole of CO(g) reacts with Cl2(g) to form COCl2(g) according to the following equation, 108…

A:

Q: If 0.067 mol of hydrochloric acid  (HCl)  is mixed with 0.067 mol of sodium hydroxide  (NaOH)  in a…

A:

Q: chemist measures the energy change AH during the following reaction: 2 NH3(g) → N₂(g) + 3H₂(g) ΔΗ=…

A: The given data:  2NH3(g) ==> N2(g) + 3H2(g) deltaH° = 160 KJ  When deltaH is positive,  it means…

Q: 5. A 1.500-g sample of a hydrocarbon is placed in a bomb calorimeter and undergoes combustion. The…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: A 1.200 g sample of ZnCO3 (s) dissolved in 40.0 mL of a dilute HCl solution (density = 1.10 g/mL) in…

A: The required equation is given below.