9C. The fuel in pocket lighters, butane, is a gas at room temperature with a boiling point of 0.0°C at 1.00 atm. However, butane is a liquid in these devices because the fuel is stored under pressure. Compute the minimum pressure required for butane to be a liquid at 25°C. In other words, compute the pressure at which its boiling point is 25°C. Some possibly useful information for butane: AH kJ/mol AHvap=22.9 kJ/mol =4.661 fus

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A: Trouton's rule states that, for various liquids the entropy of vaporization is same i.e equivalent…

Q: Determine the specific heat capacity of an alloy that requires 58764 J to raise the temperature of…

A: specific heat capacity = 2.30 J/°C g

Q: When a 45.0 g sample of an alloy at 100.0oC is dropped into 100.0 grams of water at 25.0oC, the…

A:

Q: The addition of 107.0  g potassium fluoride to 607.0  mL of water (d = 1.00 g/mL) causes the…

A: Mass of KF = 107.0 grams Volume of water = 607.0 mL Density of water = 1.00 g/mL Mass of KF solution…

Q: For 2-methylbutane, the AH° of vaporization is 25.22 kJ/mol and the AS° of vaporization is 84.48…

A: ∆H°, ∆S°, pressure and temperature of vaporization of 2-Methylbutane, whose ∆G° is to be determined.

Q: Calculate q when 0.10 g of ice is cooled from 10.°C to 275°C (cice = 2.087 J/g⋅K).

A: The given data contains, mass = 0.10 g. heat capacity=2.087 J/K.g

Q: What is the minimum number of complete ice cubes at 0 °C needed to cool 500. grams of liquid water…

A: The energy lost or gained can be calculated by the multiplication of the mass of the compound (m),…

Q: Use the following information to answer the next question Fructose is a sugar molecule that has the…

A: The mass of fructose combusted = 1.30 g The mass of water heated = 236 g The initial temperature =…

Q: You fill the calorimeter with 55.5g of water at 16.5°C, heat the 15.5 g “silver” coin to 100.0°C,…

A: =15.5 × 0.240 ×(100-22) J =291.096 J

Q: Calculate q when 0.10 g of ice is cooled from 10.°C to -75°C(cᵢ꜀ₑ=2.087 J/gK).

A:

Q: If water goes from gas  to  liquid at a temp of 25 degree c predict what the signs for delta h s and…

A:

Q: When ammonia reacts with dinitrogen oxide gas (ΔHf° = 82.05 kJ/mol), liquid water and nitrogen gas…

A: To determine the heat is liberated or absorbed by the reaction that produces 355 mL of nitrogen gas…

Q: 1. 6FEO + 02 g) →2F@;O4 (6) 2Fe304 (3) AH=-3607.2 kJ 2. 4Fe;O4 (3) + 02 (3)→6FE;O3 (5) AH2 = +3408 3…

A: Introduction: Hess’s law states that enthalpy is a state function according to this law when a…

Q: 15) What is the (s, 1, g) of a substance at 0.5atm and 100°C? 16) What is the (s, 1, g) of a…

A: A phase diagram is a visual depiction of a substance's physical states under various pressures and…

Q: 1. Cows on a farm sometimes end up eating little pieces of metal, like tacks or little scraps of…

A: Delta S is a measure of change in entropy of a system.  Delta H is a measure of change in energy of…

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A: Exothermic reactions are those in which heat is evolved and endothermic reactions are those in which…

Q: A unit of heat energy that was formerly used frequently was the calorie (cal). Look up the…

A: Calorie : It is amount of energy necessarily needed to raise the temperature of water quantity of 1…

Q: Two liters of N2 at 0°C and 5 atm pressure are expanded isothermally against a constant pressure of…

A:

Q: Liquid butane combust in air. Predict the sign for Delta G, Delta S, and Delta H at 25 Degrees…

A: Liquid butane on combustion in air produces carbon dioxide, water and heat energy. 2 C4H10 (l) + 13…

Q: When a 4.18 g sample of solid sodium hydroxide was dissolved in a calorimeter in 120.0 g of water,…

A: ΔH (in kJ/mol NaOH) for the following solution process is to be calculated NaOH(s)→Na+(aq)+OH−(aq)

Q: When steam condenses onto a cold glass pane, how are the signs and values q for the glass and the…

A: D. qglass  = -qsteam

Q: A 21.0 g sample of polyisoprene, which has a specific heat capacity of 1.880 J-·g°c¯*, is dropped…

A: Mass of polyisoprene sample = 21.0 g = mpSpecific heat capacity of polyisoprene = Cp = 1.880…

Q: When a 8.52 g sample of solid potassium hydroxide dissolves in 123.2 g of water in a coffee-cup…

A: Given that:Mass of solid KOH = 8.52 gMass of water = 123.2 gTemperature changes from 21.6oC to…

Q: Which one of the following definitions best describes the concept of work? * the random motion of…

A: Work = force × distance. It means that force required to move or cause deformation to the system.…

Q: Liquid butane combust in air. Predict the sign for Delta G, Delta S, and Delta H at 25 C:

A: The balanced chemical equation for combustion of butane will be- 2C4H10 (l)  +  13O2 (g)     →…

Q: Calculate the enthalpy of vaporization for the phase change from gaseous methanol to liquid…

A:

Q: The normal melting point of benzene, C6H6, is 5.5 *CFor the process of melting, what is the sign of…

A: a) Since the process melting is converting solid into liquid Hence to convert solid into liquid we…

Q: Calculate ΔS (for the system) when the state of 4.00 mol diatomic ideal gas molecules, for which…

A: ΔS (for the system) = To be determined No of moles of gas = n= 4 moleCp,m = 72RInitial Temperature…

Q: Exactly 14.5  mL of water at 24.0 °C is added to a hot iron skillet. All of the water is converted…

A:

Q: Calculate AG° at 599 K for H20(g) + 1/2 02(g) = H202(g) using the following data: H2(g) +02(g) 5…

A: In the given question equilibrium constant of the reaction is determined with the help of…

Q: When 6.50g of NaOH(s) dissolves in 100g of H2O(l) in a constant pressure calorimeter, the…

A: The enthalpy of dissolution is the enthalpy change associated with the dissolution of a substance in…

Q: For cyclohexane, the AH° of vaporization is 33.10 kJ/mol and the AS° of vaporization is 111.80…

A:

Q: Consider the reaction: 2A(g) + B(g) → 2C(g) If ΔG° = 50.0 kJ/mol at T = 25°C and PA = PB = 1 atm and…

A:

Q: Given that Hvap is 58.2 kJ/mol, and the boiling point is 83.4C, 1atm, if one mole of theis substance…

A: S surrounding= -∆Hvap/Temperature  T=83.4 +273= 356.4K

Q: 2. A rubberized, cubic chamber was filled with butane gas and was expanded from 3.0L to 4.5L at a…

A: According to first law of thermodynamics, we have dU = q + w      -----(1) Where, dU is change in…

Q: Calculate the amount of heat (in kJ) required to raise the temperature of a 0.169 kg sample of…

A: Well change in temperature = 367.4 - 298 = 69.4 K equivalent to 69.4 °C   To raise 1 g through 1°C…

Q: The pressure of 5.0 L of gas increases from 1.50 atm to 1240 mm Hg. What is the final volume of the…

A: Boyle's law states that at constant temperature pressure of the gas is inversely proportional to the…

Q: 10. A handful of sliced potatoes (c=4.20 J/g°C) are dropped into 1250 grams of hot oil (c = 2.00…

A:

Q: 1,850 J is absorbed by 0.65 kg of gold (0.128 J/g•˚C) to a temperature of 78.4˚C: 112.33˚C 100.64˚C…

A: Heat is given by, Heat(q) = m.s.■T Where, m = mass of substance  s = specific heat capacity  □T =…

Q: Calculate the normal boiling point of a substance in Kelvin to 4 significant figures given the…

A: • Let us consider a change of one mole of a substance A from liquid state to vapor state as,…

Q: The addition of 105.0  g potassium fluoride to 599.0  mL of water (d = 1.00 g/mL) causes the…

A: Given, Mass of potassium fluoride = 105.0g. Volume of water = 599.0mL. Density of water = 1.00g/mL.…

Q: 30 moles of a gas are contained in a 50 L container subjected to 5 atm, if its temperature decreases…

A:

Q: For cyclohexane, the ∆H° of vaporization is 33.10 kJ/mol and the ∆S° of vaporization is 111.80…

A: Given : ∆H° = 33.10 KJ/mol = 33100 J/mol                                                    (since 1…

Q: Which of the following substances is not in its standard state at 25 °C? O A) H2(g) O B) H2O(1) C)…

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.