An engineer turns the temperature of a gas down, holding the volume constant at 1,250 L. Initially, the temperature of the gas was 724.°C and had a pressure of 254. kPa.  Determine the pressure of the gas when the temperature decreased to 155°C.

Q: A 10.0 L tank at 12.5 °C is filled with 3.91 g of sulfur tetrafluoride gas and 6.79 g of dinitrogen…

A: Given : Mass of sulfur tetrafluoride i.e SF4 = 3.91 g Mass of dinitrogen monoxide i.e N2O = 6.79 g…

Q: A 8.00 L tank at 1.27 °C is filled with 9.88 g of dinitrogen difluoride gas and 13.1 g of chlorine…

A: GivenMass of dinitrogen difluoride gas = 9.88 gmolar mass of dinitrogen difluoride gas = 66.010…

Q: A reaction between liquid reactants takes place at 33.0 °C in a sealed, evacuated vessel with a…

A:

Q: L Sketch of a gas-collection apparatus Calculate the mass of CO that is in the collection tube.…

A: Given,Final Volume of CO gas = 112. mLTemperature = 55.0 oC

Q: Sometimes in lab we collect the gas formed by a chemical reaction over water (see sketch at right).…

A:

Q: A gas mixture in a 3.900 L container at 305°C contains 1.20 g each of Ar, CO, and CH4. Find the…

A: We have given that Volume of gas mixture = 3.9 L Temperature of Gas mixture = 3050C = 578 K Mass of…

Q: A reaction between liquid reactants takes place at 12.0 °C in a sealed, evacuated vessel with a…

A: Mole is equal to weight of substance divide by it's molar mass

Q: A 9.00 L tank at 22.7 °C is filled with 6.21 g of sulfur hexafluoride gas and 7.82 g of boron…

A:

Q: A gas mixture in a 4.900 L container at 310°C contains 1.25 g each of Ar, CO, and CH4. Find the…

A: The number of moles for a given chemical species refers to the ratio of mass of the species to that…

Q: An engineer turns the temperature of a gas down, holding the volume constant at 1,250 L. Initially,…

A: Given: Note: 101.325 kPa = 1 atm Initially: Pressure of a gas (P1) = 252 kPa = 2.487 atm Temperature…

Q: A 6.00 L tank at 18.7 °C is filled with 5.93 g of carbon monoxide gas and 2.28 g of sulfur…

A:

Q: An engineer turns the temperature of a gas down, holding the volume constant at 1,250 L. Initially,…

A: Given :-  Initial pressure (P1) = 295. KPa Initial temperature (T1) = 628.oC  Final temperature (T2)…

Q: Sometimes in lab we collect the gas formed by a chemical reaction over water (see sketch at right).…

A:

Q: A sample of an unknown compound is vaporized at 150. °C. The gas produced has a volume of 980. mL at…

A:

Q: Sometimes in lab we collect the gas formed by a chemical reaction over water (see sketch at right).…

A: Temperature = 45.0 oCVVolume of gas = 116 mL

Q: A gas sample originally occupies 436mL at 24°C. When the volume is expanded to 612mL and the…

A:

Q: Sometimes in lab we collect the gas formed by a chemical reaction over water (see sketch at right).…

A: Answer: Mass of CO collected = 0.14g

Q: Sometimes in lab we collect the gas formed by a chemical reaction over water (see sketch at right).…

A: For an ideal gas,    PV= nRT  Where Volume of a n mol of gas at temperature T and pressure P = V

Q: Sulfur tetrafluoride gas is collected at  −4.0°C  in an evacuated flask with a measured volume of…

A: Applying ideal gas equation  PV = nRT where  P= pressure, V= volume, n= no. of moles R= gas…

Q: Dinitrogen monoxide gas is collected at 19.0 °C in an evacuated flask with a measured volume of 45.0…

A: We need to use ideal gas equation to calculate moles and then mass. Equation is given as :  PV = nRT…

Q: Sometimes in lab we collect the gas formed by a chemical reaction over water (see sketch at right).…

A: T = 30oC=30+273=303 KV = 78.7 mLP(H2O) at 30oC = 31.8 mmHgP(atm) = 1 atm or 760 mmHgR = 0.08206…

Q: Zinc reacts with hydrochloric acid to produce hydrogen gas (as shown by the following equation). If…

A: In the given question,  Gas produced is hydrogen gas.  Volume of hydrogen gas = 47.4 mL = 47.4×10-3…

Q: A closed vessel of fixed volume contains 20.0 g of CO2(g) exerting a pressure of 2.25 atm. Some…

A:

Q: A 9.00 L tank at 4.56 °C is filled with 8.55 g of chlorine pentafluoride gas and 9.34 g of…

A: Number of moles of any Substance can be calculated by - Moles = mass/Molar mass Here, Mass of…

Q: Chlorine pentafluoride gas is collected at 12.0 °C in an evacuated flask with a measured volume of…

A: Given :-  Volume of gas = 20.0 L  Pressure = 0.230 atm  Temperature = 12.0°C  To be calculated :-…

Q: A reaction between liquid reactants takes place at - 16.0 °C in a sealed, evacuated vessel with a…

A:

Q: An engineer turns the temperature of a gas down, holding the volume constant at 1,250 L. nitially,…

A: Initial temperature (T1)= 647 °C  T1= 273 + 647 = 920 K  Initial pressure (P1)= 211 kPa  Final…

Q: A reaction between liquid reactants takes place at 33.0 °C in a sealed, evacuated vessel with a…

A: We can solve this by using ideal gas equation i.e. PV=nRT. ...... (1) P is the pressure of the gas V…

Q: An engineer turns the temperature of a gas down, holding the volume constant at 1,250 L. Initially,…

A:

Q: Sometimes in lab we collect the gas formed by a chemical reaction over water (see sketch at right).…

A:

Q: metimes in lab we collect the gas formed by a chemical reaction over water (see sketch right). This…

A:

Q: A 10.0 L tank at 28.9 °C is filled with 7.97 g of sulfur tetrafluoride gas and 15.3 g of sulfur…

A: PV = nRT Number of mol = Mass/molar mass Mole fraction of ith species (Xi) = ni/n , where n = total…

Q: A reaction between liquid reactants takes place at -13.0 °C in a sealed, evacuated vessel with a…

A:

Q: A 10.0 L tank at 3.85 °C is filled with 10.3 g of sulfur hexafluoride gas and 6.25 g of dinitrogen…

A: Number of moles of sulfur hexafluoride can be calculated as, Number of moles of SF6=MassMolar…

Q: A sample of an unknown compound is vaporized at 160. °C. The gas produced has a volume of 1200. mL…

A: Given:  Volume of ideal gas produced: 1200 ml = 1.2 L  Pressure of gas: 1 atm  Temperature: 160°C =…

Q: An engineer turns the temperature of a gas down, holding the volume constant at 1,250 L. Initially,…

A:

Q: A 44.0 L metal cylinder stores a sample of gas at 6 °C under 1.02 atm. The temperature of the…

A: The effect of pressure and temperature is measured by Boyle’s law and Charles's law respectively.…

Q: An engineer turns the temperature of a gas down, holding the volume constant at 1,250 L. Initially,…

A:

Q: A 9.00 L tank at 9.39 °C is filled with 6.14 g of dinitrogen monoxide gas and 9.14 g of boron…

A: Number of moles of N2O = mass/mol.wt. = 6.14 g/(44.01 g/mol) = 0.139514 mol  Number of moles of BF3…

Q: Boron trifluoride gas is collected at 20.0 °C in an evacuated flask with a measured volume of 45.0…

A: Mole is equal to weight of substance divide by it's molar mass

Q: An engineer turns the temperature of a gas down, holding the volume constant at 1,25 L. Initially,…

A:

Q: What pressure of H, gas is produced if 42.28 g of Al is reacted with excess HCl in a sealed 15.1 L…

A:

Q: A 9.00 L tank at 1.5 °C is filled with 3.22 g of carbon monoxide gas and 16.7 g of chlorine…

A:

Q: ometimes in lab we collect the gas formed by a chemical reaction over water (see sketch at right).…

A:

Q: Sometimes in lab we collect the gas formed by a chemical reaction over water (see sketch at right).…

A:

Q: Sometimes in lab we collect the gas formed by a chemical reaction over water (see sketch at right).…

A:

Q: The temperature of a 4.396 L sample of sulfur dioxide is changed, causing a change in pressure from…

A:

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.