widely used in the compression/cooling circuits of refrigeration or air-conditioning systems. Since the discovery that such compounds (HCFCs and CFC's) released into the atmosphere were a major cause of depletion of stratospheric ozone, newer refrigeration systems make use of certain hydrofluorocarbons (HFCs), which are degraded in the lower atmosphere, instead. Often, mixtures of such compounds are used. Suppose a sample of refrigerant gas consisting of a simple mixture of the gases pentafluoroethane (C2HF5) an

Q: Iron ore is reduced to pure iron by smelting, during which the iron (III) oxide in the ore reacts…

A:

Q: Butane gas, C4H10, is sold to campers as bottled fuel. Its density at 258C and 1.00 atm is 2.38 g/L.…

A: The standard enthalpy change for a reaction can be calculated as shown below.

Q: The molar heat capacity of a diatomic molecule is 29.1 J-K-1.mol-1, Assuming the atmosphere contains…

A: Heat energy released or consumed in a process is given by the following equation. Q =…

Q: About how long would it take hydrogen cyanide gas (HCN) to travel 10.0 meters at 25.0°C, when its…

A: Since we know that kinetic energy is given by  KE = MV2 / 2 where M = mass and V = velocity Since…

Q: The average oxygen content of arterial blood is approximately 0.25 g of O2 per liter. Assuming the…

A: In order to solve this question, the value of gas constant we will take will be 0.0821 L atm K-1…

Q: Suppose 4.00 x 103 m3 of natural gas is used in a year to heat a certain building. Assuming that…

A: Number of moles of methane can be calculated using ideal gas equation:

Q: opened

A: If the flasks are opened simultaneously, which has will travel the farthest has to be given,

Q: A weather balloon containing 3.50 kg of helium gas, is released from a location at which the…

A: a) Using ideal gas law, PV=nRT=wMRT

Q: The combustion of methane is CH4 + 2O2 → CO2 + 2H2O  ΔH = -802 kJ/mol How much heat is produced…

A: • The given reaction is,    CH4 + 2O2 → CO2 + 2H2O ; ΔH = - 802 kJ/mol      • The values provided…

Q: calculate the volume of each product and the energy involved in the transformation for the complete…

A: Given:  P = 760 mm Hg = 1 atm  T = 25° C  So the given condition are standard conditions.  Standard…

Q: a) At 25 C and standard pressure, CO2 has a density of 1.79 g/L, calculate the volume of 2 moles of…

A: a) Given, At 25° C  and standard pressure,    1.79 g CO2  gas occupy  1 L volume  We know that,…

Q: Most of the sulfur used in the United States is chemically synthesized from hydrogen sulfide gas…

A: Given data :  Volume rate of dioxygen = 784 litres per second  Pressure of gas = 0.87 atm…

Q: What is our R value? Include units. Units mol x K : 1 : 5 : 7 # kPa * atm * mmHg * cm : mL

A: Value of R = 0.0821L × atmmol × K                R = 0.08314 L × atmmol × K               R = 8.314…

Q: Gas pipelines are used to deliver natural gas (methane, CH4, 16.043 g/mol) to various regions in the…

A: The total volume of methane delivered = 2.7 x 1012 L

Q: The reaction of iron with hydrochloric acid is represented by the following thermochemical equation.…

A: Answer :-  e. 0.397(L) Volume of H2 gas produced at STP = 0.397 L…

Q: the densities of diamond and graphite are 3.5 and 2.3 g / cm³, respectively. The conversion of…

A: C(graphite)    →   C(diamond)                                   ∆H = +2 KJ/mol it is an endothermic…

Q: 2C4H10(g) + 13O2(g) → 8CO2(g) + 10H2O(1), AH° rsa=-5814 kJ/mol. How many grams of CO2 are generated…

A: Answer option B: 605.4 g of CO2 are generated per 1×104 kJ of heat released.

Q: thermometer A sample of polystyrene, which has a specific heat capacity of 1.880 J-g¯°c¯³, is put…

A:

Q: Consider the gases carbon dioxide and fluorine. At high temperatures, the heat capacity ratio of…

A:

Q: When you inflate a mattress, you force yourself to blow up some air, your lungs provide work against…

A: We need to recollect a relation between atmospheric / air pressure and  sea level,  1) Higher sea…

Q: The emission of NO2 by fossil fuel combustion can be prevented by injecting gaseous urea into the…

A:

Q: Which statement is no of Brownian motion? It is independent of temperature. It is due to the random…

A: Brownian motion is the irregular motion of particles due to the collisions with other rapid moving…

Q: Explain why the plot of PV for CO2 differs from that of an ideal gas. CO2 22.6 CH4 I 22.5 Не 22.4…

A: According to the assumptions from the kinetic theory of gases, it states that, Gases consist of…

Q: Of these gases, which has the fastest-moving molecules (on average) at a given temperature? A) They…

A:

Q: Long-term space missions require reclamation of the oxygen in the carbon dioxide exhaled by the…

A: The required mole ratio for the formation of CH4 from CO2 is: 1 mol CH41 mol CO2 or 11

Q: increased the leveiS of greennot Ise But of air. gases. Human activities, such as the combustion of…

A: Physical change is defined as change only state but chemical mixture will not change Chemical…

Q: c. What volume in liters, measured at 26.0 °C and 724mmHg, of SO2 must react if 2.46 kJ of heat are…

A: Given: Temperature (T) = 26oC = (26 + 273) K = 299 K            Pressure (P) = 724 mm Hg  Since, 760…

Q: (a) The atomic weight of carbon is 12, hydrogen is 1 and oxygen is 16, and the formula for the…

A: The balanced chemical reaction is as follows; CH4  +  2O2 --------------> CO2  +  2H2O  +…

Q: 9) Incandescent light bulbs can get very hot to the touch as they convert much of the electrical…

A:

Q: Incandescent light bulbs can get very hot to the touch as they convert much of the electrical energy…

A:

Q: Carbon dioxide, which is recognized as the major contributorto global warming as a “greenhouse gas,”…

A: According to ideal gas equation:

Q: Gas pipelines are used to deliver natural gas (methane,CH4) to the various regions of the United…

A: The number of moles (n) of methane is calculated as shown below where Vm is the molar volume of the…

Q: How many liters does 42.85 grams of C3H8 occupy at STP?

A:

Q: a dry natural gas consists of (60 gm methane, 20gm ethane, 15,gm propane, 8 gm I. Butane, 4 gm…

A:

Q: In a city X the atmospheric pressure is 547 torr. Waht is the boliling point of water (AH = 40.7…

A: In order to find the boiling point we first write down the given data: Atmospheric pressure= 547…

Q: (a) how many grams of methane should the fuel injection system send to the cylinder to consume 80%…

A: The above given reactions are combistion reactions of methane. In combustion reactions gases like…

Q: A pure sample of Substance S is put into an evacuated flask. The flask is then heated steadily and…

A: The graph of S given is,

Q: A gas occupies a volume of 200 cm3 at STP. What volume will it occupy at 100oC and 1 atm?

A: At STP, the temperature of the gas will be 273 K and pressure will be 1 bar = 1 / 1.01325 = 0.987…

Q: A  sample of 4.5 moles of an unknown gas occupies a volume of 1.6L at 23.2atm, what is the ideal…

A: The equation of the state of a fictitious ideal gas is known as the ideal gas law. Although it has…

Q: The molar heat capacity of a diatomic molecule is 29.1 J-K-1.mol-1, Assuming the atmosphere contains…

A: Step 1:Total heat intakeq = C *Δt    = 29.1 J/Kmol * 3K    = 69.84 J/mol

Q: Which of the following statement about coal gasification is INCORRECT? A. The synthesis gas is CH4.…

A: Coal gasification is the process of producing syngas- a mixture consisting primarily of CO, H2,CO2,…

Q: How many grams of C₆H₆ liquid must decompose according to the following chemical equation to…

A: The reaction is  C6H6l → 3C2H2g △H = 630 KJ the molar mass of C6H6 is 78.11 g/mol this is…

Q: Ethylene gas (C2H4) is emitted by fruits and is known to be responsible for their ripening. Based on…

A: why a bunch of bananas ripens faster in a closed paper bag than in a bowl reason and explaination…

Q: Upon an experimental process, a round-bottomed glass flask (evacuated) weighs 62.0 g when its empty.…

A: We can find the molar mass by using ideal gas law : PV = nRT  Where, P= Pressure             V=…

Q: In the following reaction : NaO2(s)+H2O(l)⟶NaOH(s)+O2(g)NaO2(s)+H2O(l)⟶NaOH(s)+O2(g)   (YES, this…

A:

Q: Which molecules have the greater average speed or are they the same? b. Which molecules have the…

A: Molecular mass of O2 is 32 g/mol. Molecular mass of CO2 is 44 g/mol