2. Calculate the molar enthalpy of combustion in a reaction where the enthalpy change is -109KJ and 3.45 moles of the substance are combusted. (2)

Q: In an insulated bomb calorimeter, 0.568 g of solid citric acid (C6H8O7, molar mass 192.12 g) was…

A:

Q: When methanol, CH, OH, is burned in the presence of oxygen gas, O2, a large amount of heat energy is…

A: Thermodynamic is the branch of chemistry that mainly deals with the heat transfer between system and…

Q: When methanol, CH,OH, is burned in the presence of oxygen gas, 0,, a large amount of heat energy is…

A:

Q: if 0.0102 moles reacted and 476.5 J of heat were absorbed by the reaction in a coffee cup…

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Q: 2. When acetone, CH3COCH3, is completely burned to carbon dioxide and liquid water, at 25°C, Delta…

A: The balanced chemical reaction between acetone and oxygen to produce carbon dioxide and liquid water…

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: When 2.50 g of methane burns in oxygen, 125 kJ of heat is produced. What is the enthalpy of…

A: The molar mass of methane is 16.04 g/mol 1 mol = 16.04 g x = 2.5 g x = 2.5 g/16.04 g mol-1 = 0.15586…

Q: What does "Enthalpy change of a chemical reaction" mean?

A: Enthalpy change of a chemical reaction is defined as the amount of heat released or absorbed in the…

Q: What mass of methane, CH4(g) in kg must be burned to liberates 2.80x10^7 KJ of heat if the heat of…

A: To Find: To find the mass of methane in kg when it burns to liberates 2.80×107KJ.

Q: 2.Describe four different ways in which the enthalpy change associated with the following chemical…

A: The reaction can be given as  HNO3(aq)+ KOH (aq) →KNO3(aq)+ H2O And the reaction generated 53.4…

Q: The change in the internal energy of a system (ΔE) is -74 J. What is the work done when the system…

A: We have to calculate the work done.

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

A: a) The balanced chemical equation is,

Q: (a) What is meant by the term standard conditions with referenceto enthalpy changes? (b) What is…

A: a) Standard conditions with respect to the enthalphy of changes would be the enthalphy that is…

Q: Propane (C3H8) burns according to the following balanced equation: C3H8(g)+5O2(g)→3CO2(g)+4H2O(g)…

A: The given combustion reaction is given below : C3H8(g)  +  5O2(g)  →  3CO2(g)  +  4H2O(g) Given…

Q: When methanol, CH,OH, is burned in the presence oxygen gas, 0, a large amount of heat energy is…

A: A chemical reaction is symbolic representation of the conversion of substances to new substances. In…

Q: Suppose that 0.250 mol of methane, CH4(g), is reacted with 0.400 mol of fluorine, F2(g), forming CF…

A: 0.250 mol  of methane is reacted with 0.400 mol of fluorine.

Q: If a system has 425 kcal of work done to it, and releases 5.00×102 kJ of heat into its surroundings,…

A: Convert the unit of work done to kJ:

Q: When methanol, CH,OH, is burned in the presence of oxygen gas, O,, a large amount of heat energy is…

A: Enthalpy of reaction = - 764 kJ/mol Energy required = 729 kJ We need to find mass of methanol to be…

Q: 2. The work done when a gas expands in a cylinder is 264 J. During the process, there is a heat…

A:

Q: 4-A system suffers an increase in internal energy of 80 J and at the same time has 50 J of work done…

A:

Q: The standard enthalpy of formation of hydrogen chloride gas, HCI(g) is -92.31 kJ/mol. Write the…

A: The objective of the question is to write the thermochemical equation to represent formation of…

Q: For a given sample of CH3OH, the enthalpy change during the reaction is 82.3 kJ. How many grams of…

A: The reaction will be:

Q: KJ/mol. The heat of reaction for the combustion of a mole of Ti in this calorimeter is

A: The ∆Hcombustion is the amount of heat in the energy needed to burn per mole of a substance. Its…

Q: 1. What is the essence of determining the heat capacity of the calorimeter? Is it possible to…

A: 1. To determine the essence of the heat capacity of the calorimeter.

Q: Many portable gas heaters and grills use propane, C3H8(g). Using enthalpies of formation, calculate…

A: C3H8+5O2(g)→3CO2(g)+4H2O(l)                 ∆H°rxn=?Known values:-∆H°fCO2=-393.3 KJmol∆H°fH2O…

Q: When 13.99mL of HCl of unknown concentration (but less than that of the base) are reacted with…

A: Given : Concentration of NaOH = 3.172 M Volume of NaOH solution = 15.00 mL = 0.0150 L…

Q: 1)What is the specific heat if 24.8 g of a metal absorbs 275 J of energy and the temperature rises…

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Q: Hydrazine, N2H41), is used in rocket fuels. The thermochemical equation for the combustion of…

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Q: 12. The standard enthalpy of formation, ΔHfº, for which of the following is zero? a)  F2(g) c)…

A: The difference in the standard enthalpies of formation of products and reactants gives the value of…

Q: What is enthalpy, and what is ΔH for a reaction, and what does it mean if ΔH is positive or…

A: Enthalpy can be defined as the total amount of heat of the system which can be represented by a…

Q: 49. When 2.50 g of methane burns in oxygen, 125 kJ of heat is produced. What is the enthalpy of…

A:

Q: A typical room in a house contains 5.10 x 104 L of air (density = 1.29 g/L). How many moles of…

A: Specific heat capacity is the amount of heat that is required to rise a temperature of 1 kg…

Q: (i) Standard enthalpy change of combustion

A: Enthalpy is a state of function  Enthalpy value for  a particular system can't be measured  But we…

Q: When methanol, CH3OH, is burned in the presence of oxygen gas, O2, a large amount of heat energy is…

A:

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: If the heat of combustion for a mole of methane (CH) is -2,200 kJ, how  many grams of methane must…

A: The enthalpy of condensation (or heat of condensation) is by definition equal to the enthalpy of…

Q: determine the enthalpy change for the complete combustion of one mole of ethane with oxygen gas to…

A:

Q: When methanol, CH,OH, is burned in the presence of oxygen gas, O,, a large amount of heat energy is…

A: Given information:                      CH3OH(g) + 32O2(g)  → CO2 (g)  + 2H2O(l)        ∆H = -764 kJ

Q: 19. The combustion of hydrogen-oxygen mixtures is used to produce very high temperatures (approxi-…

A: Given,

Q: If the molar mass of water is 18.02 g/mol and the specific heat of water is 4.184 J/g.◦C, calculate…

A: The molar mass of water = 18.02 g/mol. The specific heat of water = 4.184 J/g.◦C Molar heat capacity…

Q: The complete combustion of propane, C3H8 (g), is represented by the following unbalanced equation…

A:

Q: Calculate the standard enthalpy of formation for C3H6O (l) from its combustion using the following…

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Q: The equation and enthalpy change for the reaction between D(g) and F2(g) are given below. D(g) + 2…

A:

Q: 5.000 g of Compound X with molecular formula CçH, are burned in a constant-pressure calorimeter…

A:

Q: 2. Calculate the molar enthalpy of combustion in a reaction where the enthalpy change is -109KJ and…

A:

Q: What will happen to the enthalpy of combustion if the bomb calorimeter contains less than 2.0 L of…

A: It involves calorimetry experiment.   whatever heat absorbed by the water will get produced  during…