A 0.817-g sample of a colorless liquid was vaporized in an evacuated 250.-mL flask at 121°C to give a pressure of 786 mmHg. What is the molecular weight of this substance? Molecular weight = amu

Q: What is the pressure, in kPa, of a gas sample with a pressure of 1127 mmHg?

A: Given information: Pressure of gas sample = 1127 mmHg

Q: At 27 °C, 500 cc of H2, measured under a pressure 400 torr, and 1000 cc of N2, measured under a…

A:

Q: Initially given 3.6 L at 380 mmhg and 25 celsius is then transferred to a 5.0L flask at 0 celsius;…

A: Record the given data,

Q: What is the pressure, in pascals, exerted by 1299 g CO(g) when confined at -29 ∘C to a cylindrical…

A: Provided mass of CO=1299g Molar mass of CO= 28g/mol Moles of CO=(1299g)/(28g-mol-1) Moles(n) of…

Q: A flask weighs 50.1305g when clean, dry, evacuated, 150.2410g when filled with water (density =…

A:

Q: Consider the reaction:2 SO2( g) + O2( g) →2 SO3(s)(a) If 285.5 mL of SO2 is allowed to react with…

A: a) 2SO2(g)+O2(g)→2SO3(s)2SO2(g)+O2(g)→2SO3(s) For sulfur dioxide, 285.5 mL SO2×1 mol SO2/22400 mL…

Q: Gas Z was collected over water at 21°C on a day when atmospheric pressure was 757 torr. The volume…

A: The pressure in the collection tube is due to water vapor and the gas Z. Since, the total pressure…

Q: 1. A flask contains 155 cm of hydrogen collected at a pressure of 22.5 kPa. 3 Under what pressure…

A:

Q: What volume of gas is produced when 16.0 g of lithium reacts with 30.0 mL of water? Assume that the…

A: Given, Mass of Li  = 16.0 g  Volume of water = 30.0 mL  Density of water = 1.00 g/mL  Pressure =…

Q: O2 is prepared by decomposing calcium chlorate (Ca(ClO3)2) and collecting 255 ml sample over water…

A: Given data -  total pressure = 798 mmHg  vapor pressure of water at 40o C = 55.3 mmHg Volume = 255…

Q: Calculate the molar mass of a gas that has a density of 1.70 g/L at STP

A:

Q: What volume of gas is produced when 16.0 g of lithium reacts with 30.0 mL of water? Assume that…

A: The reaction is as follows; 2Lis+2H2Oaq→2LiOHaq+H2g 1 mol of H2O reacts with 1 mol of Li 18 g of H2O…

Q: Three 5-L flasks, fixed with pressure gauges and smallvalves, each contain 4 g of gas at 273 K.…

A: As you have posted multiple parts and have not specified which part you want us to solve. Hence we…

Q: What is the pressure exerted by 2.00 moles of oxygen gas confined to a volume of 500 mL at 20.0°C?

A:

Q: If you have a barometric pressure of 200 mm Hg, what is the partial pressure of oxygen in the air?

A: Mass percentages of gases in atmosphere: CO2= 0.04%   O2= 22.83%  N2= 75.33%  H2O= 1.8% The partial…

Q: gas mixture contains O 2 , N 2 , and Ar at partial pressures of 125, 175, and 225 mmHg,…

A: Interpretation: The partial pressure in millimeters of mercury for carbon dioxide gas when added to…

Q: A mixture of neon and argon gases exerts a total pressure of 690.4 kPa.If the partial pressure of…

A: Given:Total pressure of gas mixture, Pt=690.4kPaPressure of Neon gas, PNe = 3214.8mm HgTo…

Q: What volume of gas is produced when 16.0 g of lithium reacts with 30.0 mL of water? Assume that…

A: Lithium reacts with water to produce lithium hydroxide and hydrogen gas. Reaction can be represented…

Q: In dry atmospheric air, the four most abundant components are N2, X = 0.808; O2, X = 0.1915; Ar, X =…

A: Air is a gaseous mixture of different gases. These gases are present in different mole fractions in…

Q: A 3.30g sample of a white solid was vaporized in a 400.0 mL vessel. If the vapor has a pressure of…

A: Number of moles can be calculated as follows: n=PVRTn=1.31atm×0.4L0.0821L.atm/mol.K×428K…

Q: 11 - Calculate the density of CO2 gas at 27°C and 380 mmHg pressure.

A:

Q: The Haber Process synthesizes ammonia at elevated temperatures and pressures. Suppose you combine…

A: To solve this problem we will use Stoichiometry of balanced chemical equation .  First we will find…

Q: A gas occupies a volume 1.27 L and 25 Celsius is adjusted to new volume of 1.02 L at standard…

A:

Q: A canister of oxygen gas is compressed from 68.0 mL at standard pressure to 19.0 mL. What is the new…

A: apply Boyel law for the given question  Boyel law is ,at constant temperature , PV = constant  or…

Q: What is the pressure in a 5.52-L flask if 0.114 mol of carbon dioxide is added to 0.623 mol of…

A: PV = nRT P = pressure of gas V = volume of gas n = moles of gas R = universal gas constant T =…

Q: The Haber Process synthesizes ammonia at elevated temperatures and pressures. Suppose you combine…

A:

Q: A 2.56-g sample of a colorless liquid was vaporized in an evacuated 250.-mL flask at 121°C to give a…

A:

Q: Consider the generic reaction: 2 A(g) + B(g)》2 C(g). If a flask initially contains 1.0 atm of A and…

A: Reaction proceeds to completion implies that almost all of the reactants are converted into product.…

Q: After blowing up a balloon, a student was curious what the partial pressure of each gas was in the…

A: Partial pressure of a gas in a mixture is the pressure exerted by that gas when it occupy the total…

Q: If a 0.614g sample of gas maintains a pressure of 238 mmHg when contained in a 1.0L flask at 0.0…

A: GivenMass of given gas= 0.614gVolume of the flask = 1LTemperature of the gas= 0.0° CPressure of the…

Q: In a combustion reaction, what mass of oxygen gas is needed to react with 25.0 mL of C4H10 gas,…

A: Given :-  Volume of C4H10 gas at STP = 25.0 mL  To calculate :-  Mass of O2 (in grams)

Q: 9. a) You have determined experimentally that at standard temperature and pressure (0 °C and 1 atm)…

A: For ideal gas the equation of state is :  PV = nRT = (W/M)RT  Or, M = WRT/PV ...(1)  Here, W =…

Q: A gas occupies a volume 2.51 L and 26°C is adjusted to a new volume of 1.21 L at standard…

A: Initial conditions  Volume, V1= 2.51 L Temp , T1= 26°C = 299.15 K Pressure,P1  = ? Final…

Q: If standard atmospheric pressure is 14.7ln/in^2, calculate what a pressure of 1.72lb/in^2 would be…

A:

Q: A 2.5 L canister under a pressure of 150 kPa at 20 °C is compressed to a volume of 1.5 L at 35 °C.…

A: The answer to the following question is-

Q: What is the mass of chlorine gas present in 17.0 L at a pressure of 98.5 kPa and a temperature of…

A: This problem will be solved using ideal gas equation which is given as PV= nRT  Where, P = pressure…

Q: 14 - What is the pressure of the sample of gas trapped in the open-tube mercury manometer shown…

A: The pressure of the gas is given by --         = 736 mmHg - 92 mmHg         = 644 mm Hg

Q: 0.361 g of an unknown liquid occupied a volume of 250.0 mL at 758 mm Hg pressure and 100 °C. What is…

A:

Q: What is the pressure in a sealed 2000 mL flask kept at 23.4 degrees Celsius containing N2 gas?

A: It is given that:Volume of a sealed flask = 2000 mLTemperature= 23.4 ͦ C

Q: The Haber Process synthesizes ammonia at elevated temperatures and pressures. Suppose you combine…

A: Given, Volume of N2 at STP = 1580 LVolume of H2 at STP = 4240 LWe know that, at STP 1 mole of a gas…

Q: A student adds 3.00 g of dry ice (solid CO2) to an empty balloon. What will be the volume of the…

A: Given : Mass of dry ice i.e CO2 = 3.00 g And the condition is STP i.e standard temperature of 273 K…

Q: 500 mL of a 1.52 mol/L solution of vinegar (acetic acid) is used to react with a 2.53 g sample of…

A: Given the molarity of acetic acid(CH3COOH) in the vinegar solution, C = 1.52 mol/L Volume of acetic…

Q: A sample of Oz with a pressure of 1.42 atm and a volume of 280 mL is allowed to react with excess CO…

A: We have to calculate the pressure of CO2 produced.

Q: Calculate the density of xenon gas at a pressure of 742 mmHgmmHg and a temperature of 45 ∘C

A:

Q: The gas from a certain volcano had the following composition in mole percent: 65% CO2, 25% H2, 5.4%…

A: According to Dalton's law of partial pressure the total pressure of a gaseous mixture is the sum…

Q: Substance air (78 % N2, 21 % O2) CO2 (g) Density of gas at STP 1.279 g/L 1.977 g/L 1. The table…

A: More is the density, the more it displace others from the vessel.

Q: The total pressure exerted by a mixture of He, Ne, and Ar gases is 2.00 atm. What is the partial…

A: Dalton's law ( also called Dalton's law of partial pressure) that  in a mixture of non reacting…

Q: The pressure 25.0 meters under water is 347 kPa. what is this pressure in mmHg?

A: Given that: Pressure = 347kPa We know that: 1atm = 760mmhg

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.