A sample of gas weighs 3.10 g and occupies a volume of 1,272 mL at 30 ˚C and 720 mm Hg. What is the molar mass of the gas?

Q: If a sample of gas at 35.4℃ and 108.4kPa is heated until the pressure is 297.1kPa and the volume is…

A: PV=nRT is the ideal gas equation. Here , P= Pressure (in Pa) ; V = Volume (in m3) ; n= No. of moles…

Q: A newly discovered gas has a density of 2.27 g/L at 26.0 °C and 739 mm Hg. What is the molar mass of…

A: Given: Density of gas = 2.27 g/L. Temperature = 26.0 oC And the pressure of gas = 739 mm Hg.

Q: A gas at 7.75 x 10 Pa and 17°C occupies a volume of 850. cm. At what temperature, in degrees…

A: Initial pressure = P1= 7.75 * 104 PaInitial Temperature = T1  = 17°C = (17 +273.15 )K =290.15…

Q: A sample of air occupies 1.0 L at 25 °C and 1.00 atm. What pressure is needed to compress it to 100…

A: Here given, Initial Volume (V1) = 1 L  Initial Temperature (T1) = 250 C = (273 +25) K = 298 K…

Q: What is the molar mass of 1.87 g of a gas that occupies 1.3 gallons at 135ﾟF and 8.9 psi?

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Q: A sample of a gas weighs 2.85 g and has a volume of 1001 mL at 715.0 torr and 20.0 °C. What is its…

A: The given mass of a sample of gas is 2.85 g. The given pressure is 715.0 torr.It is known that 1…

Q: At 30oC, a gas cylinder containing nitrogen has an internal volume and pressure of 58.5 L and 1.75 *…

A: All matter can be classified as solid, liquid and gases mainly. In these physical states of matter,…

Q: A sample of argon gas at 55.19 °C has a pressure of 92.56 kPa and occupies 5.71 L. How many moles of…

A: In this question, we want to determine the number of moles of Argon gas  You can see details…

Q: If 0.875 L of gas at 286 K expands to 1.731L at 311K and 1.54 atm, what was its inital pressure?

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Q: If the balloon described in Question 6.44 is released into the air and rises to an altitude of…

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Q: A gaseous sample occupies 32.4 mL at −23°C and0.75 atm. What volume will it occupy at STP?

A: The combined gas law describes the correlation among a fixed amount of gas's volume, pressure and…

Q: . A 5.65 L sample of gas at 25 °C and 1 atm will occupy what volume at 1.5 atm and 50 °C?

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Q: What is the molar mass of 1.87 g of a gas that occupies 1.3 gallons at 135 °F and 8.9 psi?

A: Given data is as follows: The mass of the gas = 1.87 g The volume of the gas = 1.3 gallons The…

Q: A sample of gas occupies 0.575 L at 1.5 atm and 125 °C. At what pressure will its volume be 300 ml…

A: Here, P1 = 1.5 atm; V1 = 0.575 L; T1 = (273 + 125) K = 398 K P2 = unknown; V2 = 300 mL and T2 = 295…

Q: Neon gas, Ne, at 25°C and 1.00 atm occupied a vessel whose volume was 2.67 L. What volume would this…

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Q: 4. Calculate the mass of a 4.5 L balloon filled with chlorine gas at 67.0°C and 103.2 kPa?

A: The pressure, volume, temperature and number of moles of a an ideal gas is related to each other by…

Q: A 0.850-mole sample of nitrous oxide, a gas used as an anesthetic by dentists, has a volume of 20.46…

A: Since, number of moles of gas are constant. So,  P1V1/T1 = P2V2/T2 Given that: P1 = 1.35 atm, V1 =…

Q: If it takes 6.14 seconds for 16.3 ml of C,H,(g) gas to effuse through a pinhole into a vacuum, how…

A: Graham's law of effusion:- under similar conditions the rate of effusion of a gas is inversely…

Q: A gas sample occupies 2.0 L at 20°C and 5.00 atm pressure. What volume in L will the gas occupy at…

A: Given :-  Initial pressure = 5.00 atm  Initial volume = 2.0 L  Initial temperature = 20°C  Final…

Q: At 570.mm Hg and 25C, a gas sample has a volume of 2270 mL. What is the final pressure at a volume…

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Q: A 0.593g sample of gas has a volume of 115 mL at 53.2 ∘C and 94.0 kPa. What is the molar mass of…

A: Use ideal gas equation:

Q: 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,…

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Q: A sample of gas at 310 K ocupies 165 mL What volume (in mL) will the same sample occupy at 250K?

A: The solution is as follows :

Q: A gas composed of chlorine and oxygen has a density of 2.875 g/L at 751.5 mm Hg and 11°C. What is…

A: The relationship between density , pressure , temperature and molar mass of the gas is given by the…

Q: A cylinder whose volume is 150 cm3 and contains 64 gm of O2 gas. What is the pressure inside the…

A: To solve this problem we will use Ideal gas equation which is given as  PV = nRT  Where ,  P =…

Q: A 10.9 g sample of a gas has a volume of 5.25 L at 30 ∘C and 107 kPa. If 2.9 g of the same gas is…

A: Given A 10.9 g sample of a gas has a volume of 5.25 L at 30°C and 107 kPai.e. initial amount of gas…

Q: A sample of 140.1 g of a noble gas occupies 40.75 L at 758 mm Hg and 23.0 °C. What is its molar mass

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Q: An anaesthetic gas contains 64.81% carbon, 13.60% hydrogen, and 21.59 % oxygen by mass, If 2.00 L of…

A: Given: Volume of gas = 2.0 L Temperature = 25 oC Pressure = 0.420 atm mass =2.57 g % of carbon =…

Q: 300.0 mL of a gas at 1.00 atm and 27 degrees celsius would require what temperature to change 1.00 L…

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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: A gas composed of chlorine and oxygen has a density of 2.875 g/L at 752.0 mm Hg and 11°C. What is…

A: Interpretation- To determine the molecular formula of the gas when  gas composed chlorine and oxygen…

Q: Question attached

A: The given data contains, mass of unknown compound =2.50 g volume =875 ml Pressure =685 mm Hg…

Q: A gas sample at 62.5oC and 800 mm Hg pressure has a volume of 3.50 L.  What is the volume of the…

A: Given that : The temperature of the gas sample =  62.5oC The pressure of the gas = 800 mm Hg The…

Q: What is the molecular weight of the gas?

A: Ideal gas equation :-  PV = nRT  P is the pressure of gas  V is the volume occupied by gas  n is the…

Q: A sample of dry gas weighing 3.1134 grams is found to occupy 3.650 L at 22.0°C and 740.0 mmHg. How…

A: We have to predict the moles of the gas .

Q: What is the molar mass of a gas that has density 1.40 g/L at 760. mmHg and 273K?

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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: 1.55 g of an unknown gas at 65 °C and 1.10 atm is stored in a 1.65 L flask. What is the density of…

A: Mass of the unknown gas, m = 1.55 g  Temperature, T =  65 °C = 65 + 273.15 K = 336.15 K Presssure, P…

Q: At 1.10 atm and 14.23 ∘C, a 2.15g sample of gas occupies a volume of 2.10×103 mL. Calculate the…

A: Given pressure = 1.10 atm volume = 2.10 × 103 ml Temperature = 14.23°C mass = 2.15 g

Q: A gas at 89°C occupies a volume of 0.67L. At what celsius temperature will the volume increase to…

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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: A 2.50 g sample of an unknown gas occupies 875 mL at 685 mm Hg and 35 C. What is the molar mass of…

A: To calculate the molar mass of the unknown gas first of all we calculate the number of moles of the…

Q: A gas sample with a mass of 11.2 g exerts a pressure of 1.05 atm at 22.0ºC and a volume of 2.79 L.…

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Q: A 1.20-g sample of an unknown gas is placed in a 275.0 mL flask at 35 0C and 1.00 atm. What is the…

A: Mass of a sample = 1.20 g  Volume = 275.0 ml  ....Or  because 1L = 1000 ml    so,  = 275.0 ml × (1L…

Q: At 1.29 atm and 29.54∘C, a 3.14 g sample of gas occupies a volume of 1.70 ×103 mL. Calculate the…

A: Given, P= 1.29 atm  Mass = 3.14 g Volume = 1.70 ×103 mL T = 29.54∘C

Q: A 0.350 g sample of nitrogen gas (N₂) at 90.5 K exerts a pressure of 55.0 kPa. What volume will it…

A: This problem can be solved with the help of ideal gas equation. PV=nRT P=55000 Pa = 55000 / 101325…

Q: A 14.0 g sample of N2 (g) occupies what volume at 0 degrees C and 1.00 atm?

A: First the given grams of N2 is converted into moles.

Q: A 0.350 g sample of nitrogen gas (N2) at 90.5 K exerts a pressure of 55.0 kPa. What volume will it…

A: Assume nitrogen gas shows ideal gas behavior. The ideal gas equation is: PV = nRT Here, P is…

Q: A sample of helium gas occupies 14.7 L at 23°C and 0.956 atm. What volume will it occupy at 40°C and…

A: For the phase change of the ideal gas the temperature, pressure, and volume of the initial state and…

Q: A 19.50 g sample of a gas occupies a volume of 24.8 L at 22.7ºC and 748.3 mmHg.  What is its…

A:

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.