2. Pentane C5H12 boils at 36°C at 1 atmosphere pressure. What is the molar heat of vaporization inusi kJ/mol if the vapor pressure of pentane at 25°C is 505 torr? o (3-Ai qeta

Q: A cubic piece of platinum metal (specific heat capacity = 0.1256 J/ °C g) at 200.0 °C is dropped…

A: Given:Specific heat capacity of platinum     = 0.1256 J/ oC.gInitial temperature of platinum…

Q: Write the balanced combustion equation. Record fractions as ratios (e.g. 1/2) if needed. Include…

A: Answer:When 1 mole of a substance is burned completely in presence of oxygen then energy released in…

Q: What quantity of heat, in kJ, is required to convert 50.0 g of ethanol (C₂H5OH) at 23.0 °C to a…

A:

Q: Calculate the enthalpy change (in kJ) when 27.6 g of water vapor at 126.7 °C is converted to water…

A: Enthalpy change is calculated using formula: ∆H = - q  Where , q = heat    When water at 126.7 °C is…

Q: A student runs two experiments with a constant-volume "bomb" calorimeter containing 1200. g of water…

A: Introduction: Specific heat: The quantity of heat required by a one mole of substance to raise the…

Q: For a particular isomer of C,H13, the combustion reaction produces 5093.7 kJ of heat per mole of…

A:

Q: When 1 kg of Pb (c = 0.13 J/g-°C) of initial temperature 100 °C was added to water (p = 1 g/mL, c =…

A: Specific heat capacity is defined as the amount of heat energy required to raise the temperature of…

Q: Calculate the change in molar enthalpy of carbon dioxide assoicaited with raising the temperature of…

A: The question can be solved by using integration. The detailed solution is shown below.

Q: Acetaldehyde, CH; CHO, is a colorless, flammable liquid used in the manufacture of acetic acid,…

A:

Q: When 2 mol of NH3(g) react with N₂O(g) to form N₂(g) and H₂O(g) according to this equation, 880 kJ…

A: 1.) In exothermic reaction, heat is evolved but in endothermic reaction heat is absorbed. ∆H° can be…

Q: The following information is given for benzene, C6H6, at 1 atm: AHvap(80.1 °C) AHfus (5.50 °C) =…

A: We know, condensation is the exact opposite process of vaporization.  So, ∆Hvap = –∆Hcond Where,…

Q: I have 7.702 moles of steam (water vapor) at 148.5°C in a balloon. The steam is slowly cooled to…

A: (1) From 148.5oC to 100oC, the heat transfer that took place is given by the formula, q1 =moles of…

Q: A container holds a mixture of three nonreacting gases: 2.24 mol of gas 1 with CV1 = 10.3 J/mol ·…

A:

Q: 35g of Gold (sp = 0.0308 cal/goC) at 100oC is added to 40g of Water at 22oC in a Coffee-Cup…

A: Given, Mass of gold, mgold = 35 g Initial temperature of gold, Tgold = 100 °C Specific heat of gold,…

Q: If a 125 g sample of iron is heated to 250.0oC and then placed in 500.0 g of water at 25.0 oC in an…

A:

Q: What is the heat capacity of a bomb calorimeter if the combustion of 2.888 mmol of salicylic acid…

A: To solve this problem we have to calculate the heat capacity of bomb calorimeter .

Q: 4 PCI3(g) + 1207 kJ → P4(s) + 6 Cl2(g) A) Endothermic, heat is produced B) Endothemic, heat is…

A: Given, a chemical reaction as follows,4PCl3(g)+1207 kJ→P4(s)+6Cl2(g)we are asked to classify the…

Q: CHa (8) + 3 02 (g)- 2 CO2 (8) + 2 H20 (e) Standard enthalpies of formation of CO2 (g) and H20 (e)…

A:

Q: Consider the heating curve provided for 1.00 mole of a substance that begins as a solid at -14.8 °C…

A: The initial temperature of the solid is = -14.8oC The final temperature of the solid is = 4.1oC…

Q: Ethyl chloride, C2H5CI, can be used as a local anesthetic. It works by cooling tissue as it…

A: Heat of vapourisation of ethyl chloride is 26.4 kJ/mol, which means that to vapourise 1 mol of ethyl…

Q: A piece of unknown metal with a mass of 16.7 g is heated in boiling water to 94.4°C and then dropped…

A: Given:  Mass of metal = 16.7 gm  Initial temperature of metal = 94.4°C  Mass of water in coffee cup…

Q: Ammonia will burn in the presence of a platinum catalyst to produce nitric oxide, NO. 4NH3(g) +…

A: We are given three reactions:1. N2(g) + O2(g) -> 2NO(g); ∆H = 180.6 kJ2. N2(g) + 3H2(g) ->…

Q: Ammonia will burn in the presence of a platinum catalyst to produce nitric oxide, NO. 4NH3 (g) +…

A: Manipulate the reactions given below so that they closely resemble the reaction given above, Since…

Q: Which of the following statements is correct about isolated system? It can transfer heat only It can…

A:

Q: A sample of biphenyl (C12H10) weighing 0.791 g was ignited in a bomb calorimeter. The initial temp…

A: The given reaction is . Mass of biphenyl = 0.791 gInitial temperature = Change in temperature = 2.13…

Q: The thermochemical equation for photosynthesis is shown below: 6 H20) + 6 CO26) - C6H1206(s) + 6…

A:

Q: The value of AH° for the reaction below is -126 k). The amount of heat that is released by the…

A: Sodium peroxide reacts with water to form sodium hydroxide and oxygen. The equation for the balanced…

Q: A 110.1 gram sample of an unknown substance (MM = 189.50 g/mol) is cooled from 233.0 °C to 147.6 °C.…

A: The question is based on Hess law.   it  states that net enthalpy change for the reaction remains…

Q: Hess's Law Calculate the formation of heat for the combustion of liquid acetone is the target…

A: In this question, we want to determine the combustion of acetone. How we can determine, you can see…

Q: Consider the heating curve provided for 1.00 mole of a substance that begins as a solid at -14.8 °C…

A: The specific heat capacity of the liquid is 97.25 J/g.oC, which states that 97.25 J of heat energy…

Q: Que. 9 Calculate the number of kJ of heat necessary to raise the temperature of 60.0 g of aluminium…

A:

Q: A0.836 g of CęH,4 are burned in a constant volume calorimeter, the calorimeter temperature rises…

A:

Q: What is the final temperature when 100.0 g of Al (s = 0.900 J g–1 °C–1) at 0.0°C is placed in…

A:

Q: A mixture of 7.8 mol of H₂ (g) and 3.9 mol of O₂ (g) is placed in a sealed evacuated container made…

A: The hydrogen (H2) and oxygen (O2) can react with each other to form water under suitable conditions.…

Q: Question 14 of 34 Submit What quantity of heat, in kJ, is required to convert 50.0 g of ethanol…

A:

Q: 8. From the following heats of combustion, A,H° =-726.4 kJ mol A,H° =-393.5 kJ mol A,H° =-285.5 kJ…

A: Given data CH3OH(l)  + 3/2O2(g) -------> CO2(g) + 2H2O(l), ------(1)                     ∆rH0=…

Q: 13. 60 grams of L:OH is Gadded G.9gof waher at 25 The temperature incuesses to 45.5°, What is the…

A: LiOH →Li+ + OH- Heat releases due to dissociation of LiOH in water.

Q: Consider the heating curve provided for 1.00 mole of a substance that begins as a solid at -14.8 °C…

A: The specific heat capacity of the liquid is 97.25 J/mol.oC, which states that 97.25 J of heat…

Q: The following information is given for benzene, C6H6, at 1atm: AHvap(80.1 °C) = 30.7 kJ/mol boiling…

A:

Q: Styrene (C8H8) is one of the substances used in the production of synthetic rubber and burns…

A:

Q: Predict the total quantity of heat that would be required if you wanted to prepare a cup of instant…

A: Volume of cold water is 200 ml and density is 1.0 g/mL.Specific heat of water is 4.18 J.g.-1.°C-1…

Q: A 112.1 gram sample of an unknown substance (MM = 189.50 g/mol) is cooled from 233.0 °C to 147.6 °C.…

A: Given data is Mass of the sample =112.1 gram  MM of the sample =MM = 189.50 g/mol Initial…

Q: Consider a balloon filled with 2115 L of helium at 1.00 atm pressure and 45.5°C. The temperature of…

A:

Q: A cylinder in a car engine takes 4.50 x 10-2m3air into the chamber at 303.15 Kand at atmospheric…

A:

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.