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

Q: A pound of body fat stores an amount of chemical energy equivalent to 3500 Cal. When sleeping, the…

A: A pound of body fat stores an amount of Chemical Energy equivalent to 3500 Cal. Also, while sleeping…

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: Classify each chemical reaction as endothermic or exothermic. Endothermic reactions Answer Bank…

A: The objective of the question is to classify the given chemical reactions as either endothermic or…

Q: Suppose you burn a 2.3 g sample of potato chips. You use the heat given off from that process to…

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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: Conside 'pothetical chemical reaction: A+B → C+D (In this equation A, B, C and D stand for some…

A:

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 heat given off by an acid solution as it is neutralized by a base solution could be measured by…

A: There are different apparatus for measurement of different values in laboratory.

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: Determine the amount of heat absorbed by a solution in which 485.0 g of NH,NO3is dissolved in water.…

A: enthalpy change given in the question(+25.7kj/mol) is the amount of heat absorbed by the solution…

Q: Which of the following is true about an exothermic reaction? O The number of moles of products is…

A: ''In exothermic reaction, heat is released" therefore heat of reaction is negative

Q: Stored chemical energy E) How does the diagram below show that the reaction is endothermic? Products…

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Q: A serving of peanut butter contains 204 food calories. The serving contains 9 grams of protein, 16…

A: Given information: Food calories = 204 cal Mass of fat = 16 g Mass of protein = 9 g Mass of…

Q: Consider a hypothetical chemical reaction: A +B → C+D (In this equation A, B, C and D stand for some…

A: The given chemical reaction is as follows: A + B → C + D The reaction profile diagram tells us about…

Q: How many kilocalories are required to produce 2.815 mol of aluminum? Here is the equation for…

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Q: heat + KMnO4 H2O, OH

A: Potassium permanganate i.e. KMnO4 is an inorganic compound which is used as an oxidizing agent.

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: To a test tube containing 5.0 ml of 1.00 M NaOH at 27°C in a calorimeter, 5.0 ml of 2.00 M HNO3 at…

A: To a test tube containing 5.0 ml of 1.00 M NaOH at 27°C in a calorimeter, 5.0 ml of 2.00 M HNO3 at…

Q: Is this reaction exothermic, endothermic, or neither? If you said the reaction was exothermic or…

A: A.) Endothermic reaction is that in which heat is absorbed and temperature fall down.  Exothermic…

Q: Champagne is poured cold into cold glasses because it would go "flat" (dissolved CO2 bubbles come…

A: The question is based on dissolution of gas. it also involves the application of le- chatelier…

Q: If the heat of combustion for a specific compound is −1370.0 kJ/mol and its molar mass is 47.85…

A: Given, Heat of combustion for specific compound , Q= -1370 kJmol Molar mass, M = 47.85 gmol Required…

Q: hen 1.0 gg of gasoline burns, it releases 11 kcal of heat. The density of gasoline is 0.74 g/mLg/mL.…

A: Given : Energy = 11Kcal. Amount of gasoline = 1.0 gallon.

Q: A student performs a calorimetry experiment. The student combines 100. g of 0.40 M HC1(aq) with 100.…

A: Heat absorbed by the particular species = mass × heat capacity × temperature change

Q: O Macmillan Learning Perform the conversions between energy units. 8.70 × 10² kJ = 3255 kcal = 5.27…

A: As we know that,1 kJ = 103 J1 kcal = 4.184 kJ1 kcal = 4184 J

Q: A pint of premium ice cream can contain 1100 Calories. What mass of fat, in grams and pounds, must…

A: Given the average number of calories produced by combustion of 1 gram of fat is 9.1 calorie But also…

Q: Which of the following is NOT a part of filtration systems? Filter paper Funnel O Condenser

A: To find: Which of the given is not a part of filtration system

Q: Ammonia (NH3) decomposes to hydrogen and nitrogen and 22.0 kcal/mol of energy is absorbed. 2 NH3(g)…

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Q: The graph below shows the reaction coordinate diagram for a reaction in the presence and absence of…

A: 1:From the energy profile diagram, in absence of catalyst activation energy is higher. Activation…

Q: Hydrocarbons, compounds containing only carbon and hydrogen, are important in fuels. The heat of…

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

A: Specific heat :- The amount of heat required to rise the temperature of 1 gram or 1 kg of a…

Q: The addition of hydrochloric acid to a silver nitrate solution precipitates silver chloride…

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Q: 1a. For the following reaction, write how the each of the changes will affect the indicated…

A: Solutions- Here we have to determine the how the each of the changes will affect the indicated…

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: A 2.5 g sample of french fries is placed in a calorimeter with 500.0 g of water at an initial…

A: This problem is based on calorimeter where we need to find out Caloric value of the French…

Q: QUESTION 35 AH = +572 kJ for the decomposition of water by the reaction 2H20(1) → 2H2(g) + O2(g).…

A: Decomposition of water is an endoergic reaction.Energy is being absorbed. Mass of one mole of water…

Q: Anna was asked to identify and explain if the equation CO2 (l) → CO2 (g) was an endothermic or…

A: CO2 (l) → CO2 (g)  The above reaction is an example of endothermic reaction. Beacuse  here only…

Q: A serving of fish contains 47.0 g of protein value of 4.00 kcal/g and fat has 9.10 kcal/ Report…

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Q: Which of the following general reactions appropriately models a combination reacti ► View Available…

A: Concept introduction: 1. Combination reaction: Generally, A reaction in which two or more reactants…

Q: Hydrocarbons, compounds containing only carbon and hydrogen, are important in fuels. The heat of…

A: We have to calculate the energy released for combustion of 370 g of cyclopentane.

Q: 5.00 g of Al with an excess of Cl₂ was preformed in a laboratory. The percent yield of aluminum…

A: A balanced chemical equation contain equal number of atoms of each elements on both sides of the…

Q: How much heat in kcal must be added to 0.68 kg of water at room temperature (20°C) to raise its…

A: Given that,Mass of water = 0.68KgWater is at room temperature (T1) = 20 degree CelsiusThe…

Q: If reacting 3.08 g of chlorine monoxide (ClO), a highly reactive radical, with an excess of ozone…

A: Chlorine oxide reacts with ozone to form chlorine radical and oxygen gas. The equation for the…

Q: When 3.02 g of NH4Cl  is dissolved in enough water to make 20.05 mL of solution, the temperature…

A: To find enthalpy change, first find q of reaction by using formula of q. Then divide the calculated…