A barometer reads the atmospheric pressure 764.7 torr . A sample of gas is placed in vessel attached to an open -end mercury monometer. The level of mercury in the open-end arm of the monometer has a height of 136.4 mm, and that in the arm that is in contact with the gas has a height 103.8 mm. What is the pressure of gas in atmosphere?

Q: Oxygen gas is collected at a pressure of 129 kPa in a container which has a volume of 11.5 L.  What…

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Q: Nitrogen and oxygen react to form nitric oxide (NO). All substances are in the gas phase. If 0.502…

A: The objective of the question is to determine the partial pressure of nitric oxide.

Q: A 1.00-L gas sample at 100.°C and 500. torr contains 47.0% helium and 53.0% xenon by mass. What are…

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Q: The volume of a sample of hydrogen gas was decreased from 11.97 L to 5.26 L at constant temperature.…

A: According to ideal gas law  PV = nRT  where P = pressure  V = volume n = moles  R = gas constant  T…

Q: A 1.59 g sample of a silicon-fluorine compound is determined to be 26.99% silicon by mass at 27.0…

A: m=RT/PV = ((2.60)(.0821)(300))/((1.50)(.250)) = 170.7 Mol wt=170.7 33.01 %Si -100 = 66.99%F 33.01g…

Q: A helium-filled weather balloon has a volume of 508 L at 20.9°C and 754 mmHg. It is released and…

A: According to ideal gas law, PV = nRT where P = pressure V = volume n = moles R = gas constant T =…

Q: The ideal gas law predicts gas behavior including the relationships between th number of moles,…

A: The ideal gas law predicts gas behaviour using the relation : PV=nRT  where , P = pressure of gas…

Q: A helium-filled weather balloon has a volume of 728 L at 18.9°C and 758 mmHg. It is released and…

A: According to ideal gas law, PV = nRT where P = pressure V = volume n = moles R = gas constant =…

Q: A sample of sulfur dioxide (1.75 L, 25 °C, 1.56 atm) is mixed with pure oxygen (2.00 L, 35 °C, 1.12…

A: A mixture of gases contain sulfur dioxide and oxygen which leads to the formation of sulfur…

Q: Thermal decomposition of solid ammonium nitrate (NHẠNO3), similar to the explosion in Beirut,…

A: The total pressure exerted by a system (mixture of gases) is equal to the sum of partial pressures…

Q: In a laboratory where gases are being collected, the atmospheric pressure is 753.5 mm Hg, and the…

A: In a laboratory where gases are being collected, the atmospheric pressure is 753.5 mm Hg, and the…

Q: Three monoatomic gases (neon, argon, and an unknown gas) are allowed to mix at room temperature…

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Q: A mixture of oxygen and neon gases, in a 9.80 L flask at 59 °C, contains 15.3 grams of oxygen and…

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Q: A sample of Helium gas is observed to effuse through a pourous barrier in 5.26 minutes. Under the…

A: Given, effusion time He gas =5.26 minuteseffusion time of unknown gas =17.1 minutesboth the gas has…

Q: A tank contains a mixture of 19.3 g of argon gas and 6.74 g of neon gas at 27 °C. The total pressure…

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Q: A helium-filled weather balloon has a volume of 729 L at 16.9°C and 755 mmHg. It is released and…

A: Initially,P1 = 755 mmHgV1 = 729 LT1 = 16.9°C = (16.9 + 273.15)K = 290.05 KLater,P2 = 454 mmHgV2 =…

Q: When methane is burned in oxygen, carbon dioxide and water are formed. When 8.00 L of methane at 125…

A: The chemical equation for combustion of methane is: CH4(g)+2O2(g)→CO2(g)+2H2O(g)    -------(1)

Q: A 1.00 L flask is filled with 2.00 mol Ar, 2.00 mol H2 and 4.00 mol Kr. Which of the following…

A: Given data, Volume of flask = 1.0L Moles of H2 = 2.00 moles Moles of Ar = 2.00 moles Moles of Kr =…

Q: The volume of a sample of hydrogen gas was decreased from 12.01 L to 5.30 L at constant temperature.…

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Q: A typical barometric pressure in Kansas City is 744 torr. What is this pressure in atmospheres, in…

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Q: 1.50 grams of nitrogen (N₂) gas is sealed in a 750.00 ml container at 35.0°C. Calculate the pressure…

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Q: The air all around us is a mixture of gasses containing nitrogen, oxygen, carbon dioxide, argon and…

A: Given: The partial pressures of N2, O2, CO2, Ar, H2O vapors as: 1. pN2 = 5.6 atm 2. pO2 = 828 mmHg…

Q: The volume of a sample of hydrogen gas was decreased from 12.62 L to 5.91 L at constant temperature.…

A: According to Boyle’s law,

Q: An expandable weather balloon reached a height at which the temperature was 357 K, the atmospheric…

A: Unit of given atmospheric pressure is converted as follows,

Q: volume of the balloon at this altitude is  L. A sample of nitrogen gas occupies a volume of 6.89 L…

A: 1) Using state equation, P1V1/T1 = P2V2/T2 754×731/296.9 = 641×V2/282.9 V2 =819L

Q: The volume of a sample of hydrogen gas was decreased from 13.68 L13.68 L to 6.97 L6.97 L at constant…

A: Given data,Initial volume(V1)=13.68LFinal volume(V2)=6.97LFinal pressure(P2)=9.11atm

Q: Hydrogen gas, oxygen gas, and water vapor are collected in eudiometer. The eudiometer contains…

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Q: sample of helium gas at a pressure of 640. torr and a temperature of 29.9°C, occupies a volume of…

A: The question is based on the concept of Boyle's law.   it states that for a given amount of gas , at…

Q: A volume of 0.70 L of air at 37 ° C is expelled from the lungs into cold surroundings at  4.9 ° C.…

A: Given V1 = 0.7 L T1 = 37°C = 37+273 = 310°K V2 = T2 = 4.9°C = 273+4.9 = 277.9°K

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: Experiments carried out by French chemists Jacques Alexandre César Charles and Joseph-Louis…

A: Charle's law:- At constant pressure, the volume occupied by a fixed amount of gas is proportional to…

Q: The total pressure within a closed vessel containing equal masses of hydrogen, helium, and argon gas…

A: Recall the expression of partial pressure partial pressure=mole fraction×total pressuregiven that…

Q: You start with an equimolar mixture of the gases SO₂ and O₂ in a container. The SO₂ and O₂ react to…

A: The reaction for the process is: 2SO2  +  O2  →  2SO3 We have equimolar mixture of SO2 and O2.…

Q: The volume of a sample of hydrogen gas was decreased from 11.09 L to 4.38 L at constant temperature.…

A: Boyle's law This law states that the absolute pressure exerted by a given mass of an ideal gas is…

Q: 1.329 x 10–2 L of H2 (g) is collected over water at a total gas pressure of 744 torr and a…

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Q: A scientist does an experiment to collect a gas in a chamber that maintains standard pressure.…

A: Standard pressure = 1 atm = 760 mm Hg Also, for ideal gas- P1V1 = P2V2

Q: The ideal gas law allows us to predict that: As the temperature of a gas increases, the volume of…

A: The ideal gas law allows us to predict that: As the temperature of a gas increases, the volume of…

Q: You start with an equimolar mixture of the gases SO, and O, in a container. The SO, and O, react to…

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Q: The volume of a sample of hydrogen gas was decreased from 13.77 L13.77 L to 7.06 L7.06 L at constant…

A: As per the given data we haveInitial volume (V1)=13.77LFinal Volume (V2)=7.06LFinal 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.