1: A sample of gas has a mass of 0.555 g. Its volume is 117 mL at a temperature of 75°C and a pressure of 0.805 bar. What is the molar mass of the gas?

Q: Calculate the Keg if all are gases. 5 2 NH3 1.000 atm 0.600 atm 0.400 atm N2 3 H2 heat start: equil:…

A: For an equilibrium reaction , expression for Keq is written in terms of concentration of gaseous…

Q: A gas is held in a piston-cylinder assembly. initially gas is at 28.3 0C and volume is 1.8 L. Gas is…

A: Provided initial temperature=28.3°C Or, initial temperature (T1)=(273.15+28.3) Kelvin initial…

Q: The unbalanced equation for combustion of ethane is: C₂H6(g) + 0₂(g) →→→ CO₂(g) + ______ H₂O(g).…

A: The objective of the question is to give-Balanced Equation.The final pressure.

Q: A 2.25 L vessel at 23°C contains three gases: N2, H2, and Og. The system contains 2.40 g of N2,…

A:

Q: O A 10.0 L tank at 3.48 °C is filled with 14.2 g of dinitrogen difluoride gas and 14.0 g of chlorine…

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Q: A 7.00L tank at 8.89°C is filled with 2.65g of carbon dioxide gas and 14.2g of chlorine…

A: Given , Volume of tank , V = 7.00 L TemperatureT=8.89°C=(8.89+273.15)K=282.04 K

Q: A 350 mL sample of gas is at STP. What will be the new pressure when the gas is compressed to 200 mL…

A: Given :-  Initial volume of gas at STP = 350 mL  Final volume at 40°C = 200 mL  To calculate :-…

Q: A 1.65 g sample of an unknown gas at 45 °C and 1.10 atm is stored in a 1.25 L flask. What is the…

A:

Q: A 2.55 g sample of an unknown gas at 31 ∘C and 1.05 atm is stored in a 2.85 L flask. What is the…

A: First the density is determined by using density formula as shown below,

Q: Consider the following chemical reaction: CO2(g) + NaOH(aq)  ---------> Na2CO3(s) + H2O(l) CO2(g)…

A: Initial moles of CO2 taken can be calculated using the ideal gas equation.

Q: A sample of N2O3 gas has a pressure of 0.32 atm.  The temperature is then doubled and the N2O3 gas…

A: Let the initial temperature is T K and pressure is P1=0.32 atm. On increasing temperature to 2T K…

Q: An unknown gas at 25.1 ∘C25.1 ∘C and 1.10 atm1.10 atm has a molar mass of 44.10 g/mol.44.10 g/mol.…

A:

Q: A gas storage cylinder in an ordinary chemical laboratory measures 7.0cm wide and 28.cm high. This…

A: Answer -

Q: A 2.65 g sample of an unknown gas at 75 ∘C and 1.10 atm is stored in a 2.65 L flask. What is the…

A:

Q: The molecular view of a gaseous mixture is shown. Arrange Highest partial pressure the gases in the…

A: It has been found from the given structure that the no. of moles of each gas present in the…

Q: Part 1. A chemist reacted 12.0 liters of F2 gas with NaCl in the laboratory to form Cl2 gas and NaF.…

A: Given: Volume (V), F2 used = 12 L The pressure (P) = 1.5 atm Temperature (T) = 28 K Standard P, T…

Q: 1.) A gas originally at 27oC and 1.0 atm pressure in a 3.3 L flask is cooled at constant pressure…

A: For a definite amount of gas, at constant pressure, the volume of the gas increases with an increase…

Q: A 700.0 mL gas sample gas sample at STP is compressed to a volume of 200.0 ml temperature is…

A: For an ideal gas at constant temperature the pressure is inversely proportional to the volume of the…

Q: [References] A gas sample containing 2.80 moles at 22°C exerts a pressure of 450. torr. Some gas is…

A: For the ideal gas the temperature, pressure, and mole of the initial state and the final state at…

Q: A 4.96 g sample of toluene (formula C7H8), is mixed with 17.05 atm of O2 in a 1.75 L combustion…

A: The partial pressure of a gas in a mixture is equal to the pressure exerted by an individual of that…

Q: Three 9−L flasks, fixed with pressure gauges and small valves, each contain 8 g of gas at 275 K.…

A: Given, Volume of each flask = 9 L Temperature = 275 K Flask A contains CH4. Flask B contains H2.…

Q: 8. The graph to the left shows the distribution of gas molecules with different velocities (u).…

A:

Q: Suppose you have a mixture of two gases, gas A and gas B, in a container. The total pressure of the…

A: Given :-  total moles of gaseous mixture = 3.5 mol  total pressure = 1.2 atm  partial pressure of…

Q: A 3.55 g sample of an unknown gas at 59 °C and 1.05 atm is stored in a 1.05 L flask. What is the…

A: a) Since mass of gas is given = 3.55 g  and volume of gas = volume of flask = 1.05 L hence density…

Q: A sample of gas contains 0.1600 mol of CH4(g) and 0.1600 mol of H2O(g) and occupies a volume of 18.4…

A: Given information: 0.1600 mol of CH4(g) and 0.1600 mol of H2O(g) volume of 18.4 L at reactant side…

Q: A 8.00L tank at 26.7°C is filled with 19.4g of dinitrogen difluoride gas and 2.54g of sulfur…

A:

Q: Chlorine gas reacts with fluorine gas to form chlorine trifluoride.  Cl2 (g) + 3 F2 (g) → 2 ClF3…

A: Cl2+3F2→2ClF3337 mmHg    855 mmHgmoles of cl2moles of F2=partial pressure cl2partial pressure…

Q: A 6.00L tank at 18.5°C is filled with 2.08g of boron trifluoride gas and 18.9g of sulfur…

A: Volume of tank (V) = 6.0 L                  Temperature (T) = 18.5oC…

Q: Some N₂ gas is mixed with some O, gas, and the sketch below shows a representative sample of the…

A: Given: The number of N2 molecules present in the mixture is 7. The number of O2 molecules present in…

Q: A 4.05 g sample of an unknown gas at 33 °C and 1.05 atm is stored in a 3.05 L flask. What is the…

A:

Q: A 8.00 L tank at 20.5 °C is filled with 7.14 g of carbon dioxide gas and 10.1 g of dinitrogen…

A: Given, Volume of tank = 8.00 L Temperature = 20.5 °C Mass of carbon dioxide = 7.14 g Mass of…

Q: When air is inhaled, it enters the alveoli of the lungs, and varying amounts of the component gases…

A: #(a): The total atmospheric pressure at sea level is, Pt = 1 atm or 760 torr Partial pressure of a…

Q: Kiki, Karl’s twin sister, did a lab just like our butane lab. But she did not have butane  as her…

A: Answer:- This question is answered by using the simple concept of ideal gas equation to calculate…

Q: A 2.75 g sample of an unknown gas at 33 °C and 1.10 atm is stored in a 1.75 L flask. What is the…

A:

Q: A 3.95 g sample of an unknown gas at 53 °C and 1.05 atm is stored in a 2.35 L flask. What is the…

A: Given: Mass (M) is 3.95 g Pressure (P) is 1.05 atm Volume (V) is 2.35 L Temperature (T) is 53oC To…

Q: At 65 degrees Celsius, pure PCl5 (g) is present in a flask at a pressure of 200.0 mmHg. At 200.0…

A: According to the Gay-Lussac’s law, for a given amount of a gas, the pressure is directly…

Q: A gas storage cylinder in an ordinary chemical laboratory measures  5.7cm  wide and  23.cm  high.…

A: Given: A gas storage cylinder in an ordinary chemical laboratory measures 5.7 cm wide and 23 cm…

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

A:

Q: A gas storage cylinder in an ordinary chemical laboratory measures 3.0 cm wide and 12.cm high.…

A: Width of gas storage cylinder d = 3.0 cm Height of gas storage cylinder h = 12 cm Initial pressure…

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.