A 334-mL cylinder for use in chemistry lectures contains 5.225 g of helium at 23 °C. How many grams of helium must be released to reduce the pressure to 75 atm assuming ideal gas behavior?

Q: In the mixture of gas in the container, there are three gases: Ne, Ar and Xe. Upon analysis, 4.46…

A: Give  Gas              Number of mole  Ne                  4.46  Ar                   0.74 Xe…

Q: A mixture of methane and oxygen gases is maintained in a 6.75 L flask at a temperature of 13°C. If…

A: The total pressure exerted by a mixture of gases on the container is equal to the sum of partial…

Q: The barometric pressure measured outside an airplane was 245 mmHg. Calcuate this pressure in kPa.

A: Physical chemistry.

Q: Using the Ideal Gas Law to Calculate Molar Mass A 1.22-g sample of an unknown gas has a volume of…

A:

Q: The partial pressures of CH 4, N 2, and O 2 in a sample of gas were found to be 135 mmHg, 508 mmHg,…

A: Given : Partial pressure of CH4 = 135 mm Hg Partial pressure of N2 = 508 mm Hg And partial pressure…

Q: A 10.0 L tank at 8. °C is filled with 17.7 g of sulfur hexafluoride gas and 5.37 g of boron…

A: Given: Volume of tank = 10.0 L Temperature = 8 oC Mass of sulfur hexafluoride i.e. SF6 = 17.7 g. And…

Q: For many purposes we can treat ammonia NH3 as an ideal gas at temperatures above its boiling point…

A: This question can be solved using the ideal gas equation. P1V1T1= P2V2T2

Q: What is the pressure in a 19.0 L cylinder filled with 0.681 mol of nitrogen gas at 322 K? VO AE ΑΣφ…

A:

Q: For many purposes we can treat ammonia (NH3) as an ideal gas at temperatures above its boiling point…

A: The volume of ammonia gas= 830 ml (Constant) Initial temperature, T1= 11.00°C = (11+273) = 284 K

Q: A 7.00 L tank at 19. °C is filled with 7.37 g of sulfur hexafluoride gas and 6.63 g of sulfur…

A: Given :-  Volume of tank = 7.00 L  Temeprature = 19. °C = 292 K  Mass of sulfur hexafluoride, SF6 =…

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.