A sample of hydrogen is collected by displacing a sample of water with a temperature of 35°C.  The mixture has a total pressure of 114 kPa.   What is the partial pressure of the dry hydrogen? What is the pressure of "wet" oxygen if 0.8 mol of dry oxygen at 101.3 kPa is collected? The atmospheric pressure in the lab that day is 99.4 kPa. The oxygen is to be collected over water at a temperature of 15.0°C

Q: What is the initial pressure of a gas if it occupied a volume of 0.375 L, but now occupies a volume…

A: PV= nRT  P1/V1=P2/V2

Q: A sample of oxygen gas, which is saturated with water vapour, is kept in a 10 L vessel at 30° C and…

A: Given, Total pressure, (PO2 + PH2O) = 758 Torr Pressure of water vapor, (PH2O) = 31.8 Torr

Q: Given that a sample of krypton gas effuses in 13.6 minutes, how long (in minutes) will it take an…

A: The rate of effusion is inversely proportional to the square root of the molar mass of that element.…

Q: Dry ice is carbon dioxide in the solid state.  1.28 grams of dry ice are placed into a 5.73 L…

A: From an Ideal gas equation PV= nRT.

Q: Gas X effuses through a pinhole at a rate of 4.73 × 104mol/s. Methane gas, CH4(g), effuses through…

A:

Q: A balloon has a pressure of 137 kPa and a volume of 93L. If the temperature is held constant, what…

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Q: A 4.00 g sample of a mixture of BaO and CaO is placed in a 1.00 L vessel containing CO2 at a…

A: First we have to calculate the reacted pressure of CO2 gas in the given reaction:-The initial…

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: 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: Nitrogen forms a surprising number of compounds with oxygen. A number of these, often given the…

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Q: 1.10 g of Carbon dioxide were introduced into a 1.00 L flask which contained some pure oxygen (O2)…

A: Given : mass of CO2 introduced = 1.10 g Since molar mass of CO2 = 44 g/mol Hence moles of CO2…

Q: Sodium metal reacts with chlorine gas to form sodium chloride. A closed container of volume 2.00 x…

A: The reactants given are sodium metal and chlorine gas and the product is sodium chloride. Given:…

Q: A 1-L sample of CO initially at STP is heated to 546 K, and its volume is increased to 2 L. (a)…

A: On increasing the volume of the gas molecule, the gas molecules spread far apart. Due to this the…

Q: a scuba diver exhales 1.85 L of air while swimming at a depth of 65.70 m where the sum of…

A:

Q: We separate U-235 from U-238 by fluorinating a sample of uranium to form UF6 (which is a gas) and…

A: The diffusion of gaseous particles through a small hole is called an effusion.

Q: A container with volume 1.48 L is initially evacuated. Then it is filled with 0.226 g of N2+. Assume…

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Q: A sample of nitrogen gas is placed into a container at 200 K. If the temperature of the container is…

A: From ideal gas equation  PV /T = nR  for a particular moles of a gas PV/T  = constant therfore we…

Q: Hydrogen gas is produced by the reaction between metallic aluminum and aqueous hydrochloric acid. 2…

A: The given chemical reaction is 2Al(s) + 6HCl(aq) → 2AlCl3(aq) + 3H2(g)  Total volume of the gas =…

Q: The hydrogen gas from the reaction of 2.200 g of iron with an excess of acid is collected in a 10.00…

A: Number of Mole- Ratio of given mass of substance to the molar mass of substance is called number of…

Q: An unknown amount of oxygen gas is mixed with 2.00 g of SO, at 0.00 °C in an 800.0 mL sealed gas…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: 1. A sample of oxygen gas, which is saturated with water vapour, is kept in a 10- L vessel at 30°C…

A: Since you posted multiple questions, we answered the first two questions. We know that according to…

Q: A piece of magnesium reacts with an aqueous solution of HCl to produce H2 gas. The hydrogen gas is…

A: The ideal gas equation is shown below: PV = nRT Where; P = pressure of the gas V= volume of the gas…

Q: 11. If a container holds a mixture of nitrogen at 1100 torr and hydrogen at 0.45atm, what is the…

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Q: 1.If you are asked to calculate the volume of Carbon dioxide gas at 25oC and 802 torr that could be…

A: We have given the Carbon dioxide gas Temperature =T= 25°C  Pressure = P=  802 torr  V = volume of…

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: In deep sea diving the composition of air a diver breathes must be changed in accordance with the…

A: Given that : % of oxygen in the air = 20% The partial pressure of oxygen in air = 0.20 atm Total…

Q: Hydrogen gas is produced by the reaction between metallic aluminum and aqueous hydrochloric acid. 2…

A: Given:  Volume of H2 gas = 291.7 ml  Total pressure = 1.26 atm  Temperature = 29.4 °C = 302.4 K…

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: How can comparing the rates of effusion of gases X and Y allow the molar mass of Y to be calculated?…

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Q: A 1.90 g sample of elemental lithium,Li(s) is reacted with water, yielding lithium hydroxide, LIOH,…

A: The balanced reaction given is, => Given: Mass of Li reacting = 1.90 g. Temperature at which the…

Q: A helium-filled balloon used in long-distance flying contains 420,000 ft3 (1.2  107 L) of helium.…

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

Q: A metal tank contains three gases:  oxygen, helium, and nitrogen.  If the partial pressures of the…

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Q: 0.0380g of Mg strip reacted completely with 6 M HCl in the gas buret of 35.8 mL oh hydrogen gas is…

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Q: What is the mass of a piece of magnesium wire that produces 48.7 mL of hydrogen gas collected over…

A: Reaction:  Mg(s) + 2H+(aq) ---> 2Mg (aq) + H2 (g) 1 mol of H2 gas is produced by 1 mol of Mg…

Q: A 1.20 g sample of dry ice is added to a 765 mL flask containing nitrogen gas at a temperature of…

A: Given information:Mass of dry ice = 1.20 gVolume of flask  = 765 mLPressure = 725 mmHgTemperature =…

Q: A medical supply company stores oxygen in a 200.5 L tank at a pressure of 9,585 kPa. If the company…

A:

Q: Hydrogen gas is produced by the reaction between metallic aluminum and aqueous hydrochloric acid. 2…

A:

Q: A piece of magnesium reacts with an aqueous solution of HCl to produce H2 gas. The hydrogen gas is…

A: Answer: When hydrogen gas is collected over HCl, solution it would also be containing water vapor in…

Q: There is 2.878 x 10-4 mol of an unidentified gaseous substance effuses through a tiny hole in 98.9…

A: Effusion is the process by which any gaseous substance is escaped from a large system through a tiny…

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

A: N₂ (g) + 3 H₂ (g) → 2 NH₃ (g)  According to the above reaction 1 mole of Nitrogen will react with 3…

Q: Since helium is lighter than air, it is difficult to measure the mass of a sample, so to find out…

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Q: A 5.00 mol sample of oxygen gas is confined to a pressure of 5atm at a temperature of 27degrees…

A: Given  O2 gas Moles of O2 gas, n = 5.00 mol Pressure of O2 gas , P = 5 atm Temperature of O2 gas , T…

Q: A sample of nitrogen gas has a volume of 478 cm3 and a pressure of 104.1 kPa. What volume would the…

A: The pressure of a fixed amount of gas changes inversely with its volume (if the temperature is…

Q: Under conditions in which the density of carbon dioxide is 1.96 g/L and that of nitrogen is 1.25…

A: The given data: The density of the Carbon dioxide = 1.96 g/L. The density of the nitrogen = 1.25…

Q: A substance containing only carbon and hydrogen is analyzed and found to contain 85.7% carbon by…

A: Density of compound at STP = 1.87 g/Li.e. 1 L of compound weighs 1.87 g1 mol of compound at STP =…

Q: Sulfur trioxide, SO3, is produced in enormous quantities each year for use in the synthesis of…

A: Given , Mass of sulfur = 4.60 g Molar mass of sulfur = 32.0 g/mol Moles of sulfur = mass/molar mass…

Q: You collect a sample of hydrogen gas in an inverted buret by displacement of water at 25.2oC. The…

A: VH2= 30.26mL Patm =29.6111 Hg

Q: A piece of dry ice (solid carbon dioxide) with a mass of 25.5 g sublimes (converts from solid to…

A: According to ideal gas equation,  PV = nRT V = (nRT÷P) n = moles = (given mass ÷ molecular mass)

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…

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.