How much heat in kcal must be added to 0.47 kg of water at room temperature (20°C) to raise its temperature to 45°C?

Q: What is the mass of a sample of water if 102 kcals raises its temperature by 69.7°C?

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Q: Convert the heat of neutralization of acetic acid from -52.2 kj/mmol to calories per %3D millimole…

A: The heat of neutralization of acetic acid  = - 52.2 KJ /mmol We know ; 1 Kilo Joules  = 1000 Joules…

Q: The formation of rust (Fe2O3) from solid iron and oxygen gas releases -1.7  103 kJ. 4 Fe(s) + 3…

A: The question is about to calculate the mass of rust formed when 150 kcal are released -

Q: How many moles are contained in each number of grams of fructose (C 6H 12O 6, molar mass 180.2…

A: The given information is: The chemical formula of fructose = C6H12O6 Molar mass of fructose = 180.2…

Q: A 0.500-g sample of KCl is added to 50.0 g of water in a calorimeter (as shown). If the temperature…

A: In case of a calorimeter we can relate the heat change of a system to the product of the mass of the…

Q: Ethanol, C₂H6O, is most often blended with gasoline - usually as a 10 percent mix - to create a fuel…

A: In a combustion reaction of an organic compound, it reacts with oxygen to form carbon dioxide and…

Q: a sample of octane is burned in a bomb calorimeter containing 1.00 x 10^2 g H2O. If the water temp…

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

Q: ow much heat in kcal must be added to 0.79 kg of water at room temperature (20°C) to raise its…

A: We know that Q = m × c × ∆ T m = mass of water  = 0.79 kg c = specific heat of water = 1 K cal / kg…

Q: The calorie content of a candy bar is 230. Calories per serving (1 bar). Calculate the specific…

A: The Calorie content of the candy bar is = 230 Calories per bar1 candy bar = 52.7 g1 Calorie = 1000…

Q: Perform the conversions between energy units. J 558 kJ = kJ 2565 kcal = kcal 8.63 x 106 J =

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Q: When 1.31 g of KClO3 was added to 138.34 g of water in a calorimeter, the  temperature dropped by…

A: mass of KCIO3 = 1.31 g mass of water = 138.34 g Temperature dropped = 0.506 °C Heat capacity of H2O…

Q: convert 661.9 kcal to MJ give answer to 4 sig figs

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Q: When 1.3 g of KClO3 was added to 151.1 g of water in a calorimeter, the temperature dropped by 0.588…

A: Given, Mass of KClO3= 1.3g Mass of water= 151.1g Temperature dropped(dT)=0.588°C  The heat capacity…

Q: Perform the conversions between energy units. 663 kJ=663 kJ=   JJ 2655 kcal=2655 kcal=   kJkJ…

A: Unit conversion of the energy:        1 kJ = 1000 J 1kcal = 4.184 kJ

Q: When 1.34 g of KClO3 was added to 142.07 g of water in a calorimeter, the  temperature dropped by…

A: mole = massmolar mass heat = m * s * ∆Twherem = mass of solutions = specific heat of solution∆T =…

Q: Perform the conversions between energy units. 441 kJ= 2715 kcal = J kJ

A: For KJ to J, multiply the energy value by 1000.For KCal to KJ, multiply the energy value by…

Q: Suppose you are studying the Ksp of KClOX3, which has a molar mass of 122.5 g/mol, at multiple…

A: NOTE : The salt is KClO3 and not KClOX3  Since the solid begins to appear at 74 oC. Hence the…

Q: L. Using Table 1, calculate AH; for each of the following reactions. Tell if each is exothermic or…

A:

Q: Calculate the heat capacity, in calories per degree, of 28.4 g of lead. Specific heat of lead is…

A: 1- First we will determine the heat capacity in J/°C  We know that,  Heat capacity = [ specific heat…

Q: Calculate the standard enthalpy for the reaction: 4NH:(g) + 5O:(g) → 4NO(g) + 6H;O(g), through:…

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Q: To measure the caloric content of a new breakfast bar, you burn a 2.00 g sample in a calibrated bomb…

A: Given : Mass of breakfast bar = 2.00 g                             Heat capacity of calorimeter =…

Q: During the combustion of 5.00 gg of octane, C8H18C8H18, 239.5 kcalkcal (1002 kJkJ) is released.…

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Q: 1. Complete the following: Name of product: pastry crisps fat grams _x 9 kcal/g kcal %3D Mass in one…

A: Total grams multiplied by energy in Kcal/g will help in calculation of total calories.

Q: How many Joules are there in 54.0 kcal? (1 cal = 4.184 J)

A: One calories is equal to 4.184 joule.                1 kcal = 1000 cal.…

Q: The heat of reaction for the combustion of hexane, C6H14, is 995.0 kcal/mol. What is the heat of…

A: The heat change in a particular reaction is known as enthalpy change (∆H). The endothermic reactions…

Q: 2 CH3OH) +3 O2(g) → 2 CO2) + 4 H20) + 347 kcal Calculate the amount of heat in kcal & kJ released…

A: Given : The reaction equation is as follows. 2CH3OH(l) + 3O2(g) → 2CO2(g) + 4H2O(l) + 347 kcal Mass…

Q: Answer the following questions for the balanced reaction. CO2 (g)     +      2H2O(l)          -->…

A: balanced reactionCO2(g) + 2H2O(l) → CH4(g) +2O2g   ∆Hrxn = 213 KCal∵molar mass of CO2 = 44 g…

Q: Calculate ∆H°f, in kcal/mol for C₂H₂(g) from the reaction 2 C2H2(g) + 5 O2(g) > 4 CO2(g) + 2 H2O(g)…

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Q: Is dissolving AgNO3 in water an exothermic or endothermic process? What about dissolving MgSO4 in…

A: A chemical reaction in which heat energy is released is called exothermic reaction. Enthalpy is…

Q: is 2 NO2(g)   → N2O4(g) + 19 kcal a exothermic or endothermic

A: In simple words,  Endothermic reaction - when heat is absorbed , the reaction is endothermic.…

Q: L. Using Table 1, calculate AH for each of the following reactions. Tell if each is exothermic or…

A: Calculate enthalpy of the given reactions----

Q: Perform the conversions between energy units. 791 kJ=                                             J…

A:

Q: if 1 cal rises the temp of 1ml of water by 1 degree celcius, how many calories are needed to raise…

A: Amount of heat,Q required to change the temperature of a substance of mass ,m and specific heat…

Q: Part D Food calories D1 Name of food product Naked juice D2 Mass of food nutrients in one serving…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3 sub-parts. Please resubmit the…

Q: Classify each as exothermic or endothermic AND explain why.   N2O4(g) + 19 kcal →  2 NO2(g)…

A: Exothermic process:- The process which produces energy                                     that…

Q: When CH4(g) reacts with H2O(g) to form H2(g) and CO(g) , 49.2 kcal of energy are absorbed for each…

A: The reactants are CH4 (g) and H2O (g)  And the products are H2 (g) and CO (g)  hence the reaction…

Q: Vanillin is a natural constituent of vanilla that is also manufactured for use in artificial vanilla…

A: Given the mass of vanillin taken for combustion = 1.013 g Since the temperature of the calorimeter…

Q: For the reaction: 2 C020) + 4 H20w + 347 kcal O 2(g) -> 2 CH30H) +3 0, Calculate the amount of heat…

A: When methanol reacts with oxygen or burns with oxygen releases a lot of energy and gives water and…