A sealed flask contains 3.1 L of a gas at 2.4 atm and 22.7 °C. If the density of the gas is 9.7 g/L, what is its molar mass? (You can assume that the gas behaves ideally.)

Q: A sample of unknown gas has a mass of 2.85 g and occupies 750 mL at 760 mm Hg and 100 °C. What is…

A: Ideal gases have negligible volume in compare to the volume of the container and molecules of ideal…

Q: A 20.0-L gas cylinder contains 4.80 g H2at 258C. What is the pressure of this gas?

A: Moles of H2 gas , n = mass molar mass = 4.802= 2.40 mol  Temperature , T = 258 + 273.15 = 531.15 K…

Q: A sample of 0.57 mol hydrogen gas (H2) is kept at 0°C. What volume will it occupy at this…

A: The empirical relationships among the volume, the temperature, the pressure, and the amount of a gas…

Q: A gaseous compound has a density of 1.51 g/L at 23.9 °C and 1.24 atm. What is the molar mass of the…

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Q: Consider the following chemical reaction: C(s)+H2O(g)→CO(g)+H2(g) How many liters of hydrogen gas is…

A: Given information,

Q: A mixture of carbon monoxide and helium gases, in a 71.73 L flask at 75°C, contains 5.66 grams of…

A:

Q: 4. The temperature of a sample of gas in a steel container at 30.0 kPa is increased from -100.0 °C…

A:

Q: A sample of gas of mass 2.41 g occupies a volume of 480 mL  at 27 oC  and 0.14 atm pressure. What is…

A: Given information: mass = 2.41 g volume = 480 mL  Temperature = 27oC = 27+273.15 = 300.15 K…

Q: Consider the following chemical reaction: C(s)+H2O(g)→CO(g)+H2(g) How many liters of hydrogen gas…

A: Given: mol of Carbon = 1.07 mol pressure = 1 atm temperature = 317 K we have to find grams of carbon…

Q: Which of the following assumptions is or are valid based on kinetic molecular theory? I. Gas…

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Q: A 33.0-L cylinder contains 324 g O2(g) at 20 ∘C. How many grams of O2(g) must be released to reduce…

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

Q: If 3.75 g Ar are added to 4.26 atm He in a 2.00 L cylinder at 27.0 °C, what is the total pressure of…

A: Given mass of argon = 3.75 g Molar mass of argon = 39.95 g/mol Number of moles of argon (n) =…

Q: A sample of argon gas occupies a volume of 866 mL at 28°C. What volume will the gas occupy at 50.7°C…

A: Answer: 931.3 mL volume occupy at 50.7°C

Q: 2.0 g of Ne are at 1.5 atm of pressure and 360 K. What volume, in L, does the gas occupy?

A: Volume calculation of a gas using ideal gas equation:

Q: A 2.0 L vessel is filled with 7.3 x 10-2 mol hydrogen at 1.55 atm. What is the temperature of this…

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Q: A 0.790 g sample of an unknown substance was vaporized in a 250. mL flask at 77.1 °C and 1.03 atm.…

A: Since the sample is finally in gaseous form. Hence the ideal gas law is applicable. According to…

Q: A gaseous compound has a density of 1.69 g/L at 25.2 °C and 1.45 atm. What is the molar mass of the…

A:

Q: If 4.81 g Ar are added to 4.01 atm He in a 2.00 L cylinder at 27.0 °C, what is the total pressure of…

A: First Calculate mole of Ar by mass÷molar mass Then Mole of He by PV=nRT. After this for total…

Q: 2. If 116.7mL of propane gas is released from a gas tank at 23°C, what temperature, in °C, would be…

A: Given,  Initial volume in mL = V1 = 116.7 mL  Initial temperature in 0C = T1 = 23 0C  Final volume…

Q: If the pressure of 50.0 mL of oxygen gas at 100°C increases from 735 mm Hg to 925 mm Hg, what is the…

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Q: A mixture of helium and methane gases, at a total pressure of 698 mm Hg, contains 0.480 grams of…

A: Partial pressure of gas is defined as the contribution of that gas towards total pressure of the…

Q: A 40.0 g gas sample occupies 11.20 L at 1.00 atm and 273.15K. What is the molar mass (in grams/mol)…

A: Given Datas ; m = 40.0 g V = 11.20 L P = 1.0 atm T = 273.15 K  R = 0.0821 L.atm/mol.K M = ?

Q: Calculate the density of He gas at 1atm of pressure and 20.00C. Explain (using your calculated…

A: To calculate the density of the He gas at 1 atm pressure and 20.0oC temperature.

Q: If 3.87 g Ar are added to 2.64 atm He in a 2.00 L cylinder at 27.0 °C, what is the total pressure of…

A: The number of moles of argon is calculated as follow 1 mole of argon = 39.95 g X mole of argon =…

Q: Under constant-pressure conditions a sample of hydrogen gas initially at 21.00 ° C and 9.00 L is…

A: According to Charles law, the volume of a gaseous system is directly proportional to the absolute…

Q: 0.125 g of Neon is in a 225.0 ml flask at 22.5°C. Determine the pressure in the flask in atm and in…

A: Given: Mass of Neon = 0.125 g Molar mass of Neon = 20.1797 g/mol Volume = 225.0 mL = 0.225 L…

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: Consider the reaction: Li2O(aq) + CO2(g) Lİ2CO3(s) ----> What volume of cabon dioxide will react…

A: Given :-  Li2O(aq) + CO2(g)  ---> Li2CO3(s)   Mass of Li2O = 1.00 g  Molar mass of Li2O = 29.88…

Q: If 3.20 g of O2 gas occupies a volume of 2.24 L at 0°C and a pressure of 1.00 atm, what volume would…

A: As per Avogadro's law same volume of all gases will contain same moles at constant temperature and…

Q: 9. A gas contained in 50L under 8 atm of pressure and at 20°C. How many moles of gas are there in…

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Q: A sample of helium gas occupies 11.7 L at 23°C and 0.956 atm. What volume will it occupy at 40.°C…

A: Given :-  initial volume = 11.7 L  initial temperature = 23°C  final temperature = 40.°C  pressure…

Q: If 8.00 g of gas occupies 11.2 L at 20 degrees Celsius and 0.25 atm, what is the molar mass of the…

A: Given data - mass = 8 g. Pressure = P = 0.25 atm. volume = V= 11.2 L = 0.0112 ml. gas constant = R =…

Q: A 334-mL cylinder for use in chemistry lectures contains 5.225 g of helium at 23 °C. How many grams…

A: Given,Mass = 5.225 gMolar mass of helium is = 4.0 g/molVolume = 0.334 LTemperature = 23 oC = 273.15…

Q: What mass of helium gas is needed to pressurize a 82.0L tank to 249 atm at 23°C? What mass of oxygen…

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Q: A gaseous compound has a density of 1.67 g/L at 22.1 °C and 1.42 atm. What is the molar mass of the…

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Q: A gaseous compound has a density of 1.64 g/L at 21.6 °C and 1.27 atm. What is the molar mass of the…

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Q: 32. A gas cylinder contains 72.0g of CO, occupyinga volume of 20.0 L at a temperature of 280. K.…

A: Mass of CO2 = 72 g Molar mass of CO2 = 44g/mol Volume = 20 L Temperature = 280 K R = 0.0821 L atm…

Q: The mass of 1.12 L gas at STP is found to be 6.23 g. What is the molar mass of gas Y ?

A: Given data is: Volume of gas = 1.12 L  Given mass = 6.23 g The procedure to finding the molar mass…

Q: 87.23 grams of a gas occupies 45 L at 600 mm Hg and 25 C. What is the molar mass of the gas ?

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Q: What is the mass of CH4 in a sample that occupies a volume of 16.5 L at STP?

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Q: A 14.36 mol sample of argon gas at 95.98 °C occupies 24.00 L. What is the pressure in kPa? Provide…

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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: Ideal gases are those gases which follow ideal gas equation. The relation between pressure, volume,…

Q: A 22.1 mL sample of H2 gas was collected from an experiment at 1.059 atm and 23.5 °C. How many moles…

A: Ideal gas equation The equation that gives the relationship between pressure, volume number of moles…

Q: Gases behave most ideal under which conditions? (Describe pressure and temperature)

A: Ideal gas equation is derived from kinetic gas equation. Two basic assumptions which cause deviation…

Q: Silane, SiH4, reacts with 02 to give silicon dioxide and water: SH4 (g) + 2 O2(g)  SiO2 (S) + H2O…

A: Given: Pressure of SiH4 gas = 356 mmHg = 0.4684 atm Volume of SiH4 gas = 5.20 L Pressure of O2 gas =…

Q: A sample of gas of mass 3.82g occupies a volume of 539 mL at 27 ⁰ C and 1.0 atm pressure. What is…

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Q: If there are 1.4 x 103 mg of chlorine gas at STP, how many liters does this occupy?

A: 1 mole of an ideal gas occupy 22.4 liters volume at STP. Volume of gas at STP = number of moles of…

Q: If a sample of 4.17 L of ethane gas, C,H, at 725°C is cooled to 175°C at constant volume? pressure,…

A:

Q: 3. What is the temperature of 1.2 moles of Helium gas at 1950 mm Hg if it occupies 15,500 ml of…

A: Combine Gas law of ideal gas -PV = nRTwhou volume of n mol of gas is V at pressure P andtemperature…

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.