A sample of 60 cm3 of Ar(g) at 27°C was contained at a pressure of 155 kPa in a J shaped tube with mercury. Later the temperature was changed. When the mercury level was adjusted to give the same pressure of Argon the volume changed to 50 cm3 . What was the final temperature of Argon?   why the no. of moles doesnot change while the vol.changes from 60 cm^3 to 50 cm^3

Q: What is the pressure (in atm) of 0.250 mole of nitrogen gas at 18C in a 7.50 x 10^3 mL container?

A: We have given that   Mole of N2 = 0.25 mole  Temperature (T) = 18 + 273.15 = 291.15 K  Volume (V) =…

Q: The partial pressures of CH4, N2, and O2 in a sample of a gas mixture were found to be 123 mmHg, 505…

A:

Q: ) A tank contains nitrogen N2 at an absolute pressure of 2.5 atm. What will be the pressure of an…

A:

Q: Iodomethane is a common liquid used in the laboratory. It vaporizes readily. If the pressure of…

A: Concept: Ideal Gas Equation P*V = n* R*T where n = moles = Mass (m)/ Molar Mass (M) P*V = (m/M) *…

Q: In what volume must 12.5 moles of argon be contained so that at 20.0°C it would exert a pressure of…

A:

Q: A mixture of neon, argon, and xenon had a total pressure of 1560 mm Hg at 298 K. The mixture was…

A: Given : Total pressure of gas mixture = 1560 mm Hg Moles of Ne = 1.50 mol Moles of Ar = 2.65 mol And…

Q: What is the temperature, in degrees celcius, of 1.50 moles of neon (Ne) gas confined to a volume of…

A:

Q: Two bulbs of different volumes are separated by a valve. The valve between the 2.00 L bulb, in which…

A: Given, two bulbs of different volumes are separated by a valve,volume of gas of bulb 1st V1 =2.00…

Q: At what temperature would 2.10 mol N2 exert 126.65 kPa of pressure in a 25.0 L tank? * 383 K O 45.5…

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Q: 4. A 34.0-L cylinder contains 305 g of oxygen gas at 22°C. How many grams of gas must be released to…

A:

Q: A sample of nitrogen is collected by water displacement at 730,0 mm Hg and 20°C. What is the partial…

A: At 20oC vapor pressure of water = 17.5 mm Hg = PwaterTotal pressure = Ptotal = 730 mm Hg According…

Q: A sample of an ideal gas at 1.00 atm1.00 atm and a volume of 1.28 L1.28 L was placed in a weighted…

A: according to boyl's law at constant temperature pressure is inversely proportional to volume

Q: What mass of Carbon Dioxide will exert the same pressure as 12.5 g of ammonia at the same volume…

A: # We are given that we have same condition for both gases that is same volume, temperature and…

Q: A sample of volume 18.3 L has a mass of 57.9 g.(a) Is the material gaseous or condensed?(b) If the…

A: Since we know that gases molecules are spread over the entire vessel therefore it has very less…

Q: A compressed gas cylinder of CO2 gas has a volume of 23.5 L at room temperature (25C) and a pressure…

A: Given, volume of CO2 = 23.5 L Temperature  = 25°C = (273+25) = 298 K Pressure = 650 KPa  = 650/101 =…

Q: What volume is occupied by 0.640 mol of CO2 at 273.5 K and 701 mmHg ?

A: We have to calculate the volume occupied by gas.

Q: A sample of an ideal gas at 1.00 atm1.00 atm and a volume of 1.66 L1.66 L was placed in a weighted…

A: Initial pressure, P1=1.00 atm The initial volume, V1=1.66 L Final pressure, P2=10.0 atm The final…

Q: The gas from an active volcano had the following composition in mole percent; 65 % CO,, 25% H, 5.4 %…

A: The partial pressure of a substance is equal to the product of its mole fraction and pure vapor…

Q: What is the pressure, in pascals, exerted by 1263 g CO(g) when confined at -22 ∘C to a cylindrical…

A: The radius of the cylindrical tank is 15 cm or 0.15 m. The volume of the cylindrical tank can be…

Q: Based on the reaction 2 Ag2O(s) → 4 Ag(s) + O2(g), how many grams of silver oxide must have reacted…

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Q: What would be the molar mass of a gas for which 2.43 x 10-2g occupies a volume of 7.68 mL at STP?

A: Given that, volume of gas at STP, V = 7.68 mL = 0.00768 L Mass of gas at STP, m = 2.43×10-2 g Molar…

Q: Pure oxygen gas was first prepared by heating mercury(II) oxide, HgO: 2 HgO(s) → 2 Hg(1) + O2(g)…

A: Since you have posted multiple questions, we are entitled to answer only the first

Q: A sample of 222.9 mL of wet nitrogen gas was collected over water at a total pressure of 785 torr…

A:

Q: What volume is occupied by 0.781 mol of CO2 at 237.5 K and 977 mmHg?

A: Write down what information is given to you

Q: What is the pressure of 1.51 g of nitrogen gas confined to a volume of 0.105 LL at 30 ∘C?

A:

Q: A sample of hydrogen gas produced in a laboratory experiment had a volume of 280. mL at a pressure…

A:

Q: A sample of hydrogen gas was found to have a pressure of 125 kPa when the temperature was 23 °C.…

A: It is given that a sample of hydrogen gas has a pressure of 125 kPa when the temperature is 23°C.

Q: A sample of 320.2 mL of wet nitrogen gas was collected over water at a total pressure of 755 torr…

A: Molar concentration of Sodium Nitrite = 0.0334 M  or  3.34 x 10-2 M

Q: What is the ratio of urms to ump for a sample of O21g2 at 300 K? Will this ratiochange as the…

A: Calculate  μrms  (root mean square) as follows. In the expression, R is universal gas constant, T is…

Q: Calcium carbide reacts with water to produce acetylene gas according to the following equation…

A: The given reaction is shown below.

Q: A sample of 263.0 mL of wet nitrogen gas was collected over water at a total pressure of 756 torr…

A: Introduction :  Molarity is defined as the number of moles of solute dissolved in one litre of the…

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: A sample of N2(g) occupies a volume of 42.5 mL under the existing barometric pressure. Increasing…

A: As per Boyle's law volume of given amount of an ideal gas is inversely proportional to the pressure…

Q: A bottle contains 1.0 mol He(g) and a second bottle contains 1.0 mol Ar(g) at the same temperature.…

A: The root mean square velocity is the square root of mean of squares of velocities of the individual…

Q: If a sample of Argon gas occupies 2.50 L at 100.0 °C and 5.00 atm, what volume will it occupy at 0.0…

A: The volume can be calculated as follows: P1V1T1  = P2V2T25.00atm×2.50L373K  = 1.00atm×V2273KV2=9.1 L

Q: What is the pressure (in atm) of 0.250 mole of nitrogen gas at 18C in a 7.50 x 103 mL container?

A: Given that : Moles of nitrogen (n) = 0.250 mol Temperature (T) = 18 C = 291 K Volume (V) = 7.50 x…

Q: How many moles of argon gas would it take to fill a cylinder with a volume of 1.4 L to a pressure of…

A: Volume of cylinder = 1.4 L Pressure of gas = 2.5 atm Temperature of gas = 310 K No. of mol of Argon…

Q: Mass of a vacuumed (empty) vessel of volume 5 L is 640.05 g, and mass of the same vessel filled with…

A: Number of moles of hydrocarbon can be determined using Ideal Gas Equation as follows,

Q: 7. A gas With à võlumé öf а pressure of 205kPa is allowed to expand to 16.0L. What is the new…

A: We will use Boyle's law to get the answer

Q: Oxygen gas is formed by the decomposition of potassium chlorate at high temperatures according to…

A: As the height of the mercury column is rising on the side of the reaction, the expression for the…

Q: From data gathered by Voyager 1, scientists have estimatedthe composition of the atmosphere of…

A: Given information: Total pressure = 1220 torr Percent of nitrogen = 82% Percent of argon = 12%…

Q: A flask of volume 0.753 L contains a sample of chlorine gas, Cl2, with a pressure of 198 Torr at…

A: Volume = 0.753 L  Pressure = 198 torr  Temperature = 25.8 °C  Mass of sodium required to completely…

Q: How much pressure in kPa does 4.00 moles of nitrogen gas at 30.0°C exert on a container that holds…

A:

Q: A sample of 299.5 mL of wet nitrogen gas was collected over water at a total pressure of 728 torr…

A: Given: Volume of gas collected = 299.5 mL = 0.2995 L                            (Since 1 L = 1000…

Q: At what temperature will 5.00 g of Cl2 exert pressure of 1.184 atm at a volume of 750.0 mL?

A: The question is based on ideal gas equation. We have to calculate the  temperature at which chlorine…

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: What is a supercritical gas? What is the function of a modifier?.

A: Since you have posted multiple questions in a single session we are entitled to answer only first…

Q: What is the density of carbon dioxide gas (CO 2, 44.01 g/mol) at 25°C and 650 mm Hg?

A:

Q: The height of the mercury in the right arm of a manometer open to atmospheric pressure (760 mmHg) is…

A: The pressure of gas present inside the bulb is expressed as follows,

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.

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.