Consider the astronaut being supplied with He and N2. The density of helium at STP is 0?179g/L and oxygen is 1.43g/L. (a) Which gas effuses faster? How much faster? (b) Calculate the molar mass of a gas if 4.40g occupies 3.50 L at 41°C. (c) How does Graham's law explain why we smell odors?

Q: What volume, in liters, does 54.036 g of oxygen gas occupy at STP?

A: Given that : Mass of oxygen = 54.036 g At STP means, Temperature (T) = 273 K Pressure (P) = 1 atm…

Q: To collect a beaker of H₂ gas by displacing the air already inthe beaker, would you hold the beaker…

A: To see the position of the beaker for collecting the gad H2 and the gas CO2 we see the molecular…

Q: 2. Consider the astronaut being supplied with He and N2. The density of helium at STP is 0.179 g/L…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: What volume will 50.2 grams of carbon dioxide (CO2) occupy at STP?

A: Given a gas sample of CO2   amount of gas CO2   = 50.2 grams the molar mass of CO2 = 44 gm/mol for…

Q: 1.A sample of Br2(g) take 10.0 min to effuse through a membrane. How long would it take the same…

A: As per our company guidelines we are supposed to answer only one question. Kindly repost other…

Q: What does 20 g of O2 occupy at 50 degrees Celsius and 4.5 atm?

A: We will follow eqn PV=nRT Pressure x volume = number of moles  x univ. gas constant x abs temp…

Q: 2. Consider the astronaut being supplied with He and N2. The density of helium at STP is 0.179 g/L…

A:

Q: What is the molarity of the cleaning solution formed when 10.0 L of ammonia gas at 33oC and 735 torr…

A: Given details, Initial volume (V1) = 10 L = 0.01 m3. Final volume (V2) = 0.750 L Temperature (T) =…

Q: What is the mass (in grams) of 10.00 L of propane vapor (C₃H₈) at STP?

A: Given information,     Volume of propane vapor is 10.00 L

Q: Q7. A gas mixture that has the following composition in percent by volume: 10.2% CO2, 21.0% CO,…

A: Let the total composition of the mixture be 100 mL. The volume of CO2, CO, H2, CH4 and N2 can now be…

Q: In the fermentation of glucose (wine making), 760 ml of CO2 gas was produced at 65O mmHg. What is…

A: At STP  Pressure= 760 mmHg and Expression used for calculation is P1V1= P2V2

Q: A sample of hydrogen sulfide gas occupies 267 mL at 35°C and 0.850 atm pressure. What is its volume…

A: Given :  Initial pressure = 0.850 atm  Initial volume = 267 mL  Initial temperature = 35°C  To be…

Q: In CACO3 + HCI → CaCl2 + H2O+ CO2 , how many liters of carbon dioxide gas, measured at STP, can be…

A: Given balanced equation is as follows. CaCO3+2HCl→CaCl2+H2O+CO2 That means 1 mole CaCO3 will produce…

Q: How many moles of Br2 are in one cubic meter (1.00 m3) of Br2 gas at STP?

A: First we consider that Br2 gas obey ideal gas equation :  PV = nRT  n = PV / RT  Where, n = number…

Q: A mixture of He, Ne, and Ar have a total pressure of 558 mmHg. If the partial pressure of He is 341…

A: (a). Given,  Total pressure of He, Ne and Ar mixture = Ptotal = 558 mmHg  Partial pressure of He gas…

Q: The compound 1-iodododecane is a nonvolatile liquid with a density of 1.20 g/mL. The density of…

A: The density of mercury and 1-iodododecane is 13.6 g/mL and 1.20 g/mL, respectively. The atmospheric…

Q: What volume is occupied by 5.8 g of propane gas, CaHs, at 35 °C and 1.15 atm pressure?

A: Given: Mass of propane i.e. C3H8 = 5.8 g. Temperature = 35 oC And pressure = 1.15 atm.

Q: A solid brick of dry ice (C O 2 ) weighs 0.75 kg.Once the brick has fully sublimated into C O 2 gas,…

A: The given data contains, mass = 0.75 kg = 750 g. Temperature = 273 K Pressure = 1 atm gas constant…

Q: A mixture of neon and methane gases contains neon at a partial pressure of 406 mm Hg and methane at…

A: Relation between Mole fraction and Partial pressure:  χA = nAnT = PAPT

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: What volume of Cl2 gas is occupied by 11.1 grams at 25.0 degrees Celsius and 740. mm Hg?

A: Given mass of chlorine gas = 11.1 g Molar mass of chlorine gas = 71 g/mol Number of moles of…

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: 3a. Write down the two versions of the Ideal Gas Law and define each term and its units. 3b. How…

A:

Q: A sample of a certain gas has a volume of 452 mL at 711 mm Hg and 26 °C. What would be the volume of…

A: Given: Volume V1= 452 mL Pressure P1 = 711mmHg= 711/760= 0.935 atm Temperature T1 = 26oC= 26+ 273 =…

Q: 4) Given the following reaction: 2NO (g) + 02 (g) → 2NO2 (g) How many liters of gaseous oxygen are…

A: According to mole  concept, 1 mole of any gas is equal to 22.4 litre at STP. According to…

Q: An aerosol spray can with a volume of 250 mL contains 2.30 g of propane gas (C3H8) as a propellant.…

A: Given, Volume = 250mL            Mass of propane gas = 2.30g.The number of moles of propane gas can…

Q: What volume would 27 grams of CO2 occupy at 19 degrees celsius, 534 mm Hg pressure?

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

Q: In one lab, the gas-collecting apparatus used a gas bulb with a volume of 231 mL. How many grams of…

A: Given: Volume of CO2 produced = 231 mL = 0.231 L                                           (Since 1…

Q: What is the total pressure of air in lungs of an individual with oxygen at 93 mmHg, nitrogen at 565…

A: This question can be solved on the prior knowledge of the Daltons Law of Partial Pressure. It states…

Q: What is the volume of 4.68 g of CO2 gas at 1.5atm and 35°C?

A: Given data, Pressure (P) = 1.5 atm   Temperature (T) = 35°C…

Q: What is the mass (in grams) of 6.00 L of propane vapor (C:Hs) at STP?

A: To Solve this problem we will use the relationship that  1 mol of any gas at STP = 22.4 L of that…

Q: What volume, in liters, does 27.946 g of oxygen gas occupy at STP?

A: Given in the question, Mass of oxygen = 27.946 gm Conditions = STP As we know that 1 mole of any…

Q: .9 g of HCl at STP? Assume ideal beha

A: Assuming ideal gas behavior, we can say that 1 mole of an ideal gas occupies 22.4 L at standard…

Q: Which of the following statements is not correct? O The effusion of H₂ is faster than the effusion…

A: Rate of effusion is inversely proportional to the molar mass of the gas. Diffusion of gases…

Q: What mass of helium gas (in g) occupies 11.5 L at STP?

A:

Q: What is the mass (in grams) of 11.00 L of propane vapor (C₃H₈) at STP?

A: Given that : Volume(V) = 11.0 L At STP, Temperature(T) = 273 K Pressure(P) = 1atm Mass of C3H8 = ?

Q: What is the mass of 5.00 L of propane vapor (C₃H₈) at STP?

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

Q: What is the mass (in grams) of 22.00 L of propane vapor (C3H3) at STP?

A:

Q: A mixture of the gases N2, O2, and He has a total pressure of 760 mm Hg. If the partial pressure of…

A: Dalton’s law of partial pressure states that the sum of partial pressures of all gases present in…

Q: What is the volume, in milliliters, that 5.70 g of O2 occupies at STP?

A: Apply formula A= (w/Vml)×22400

Q: In Dalton's Law of Partial Pressures: Ptrapped gas = Pdry gas + Pwater vapor  Why must the…

A: Given: In Dalton's Law of Partial Pressures: => Ptrapped gas = Pdry gas + Pwater vapor

Q: what is the volume occupied by 15.0 g of nitrgoen monoxide gas, NO at 242k and 690 mm Hg?

A: The empirical relationships among various gaseous state functions (T, V, P and n) is governed by use…

Q: Ammonium sulfate is used as a nitrogen and sulfur fertilizer. It is produced by reacting ammonia…

A: (a) Fertilisers: These are the group of chemical substances which are added  crop to increase their…

Q: 2. A sample of gas at 245°C and a pressure of 2.5 atm occupies a volume of 12.3 L. What volume would…

A: Answer :-  2. 16.2 L  At STP the gas occupy = 16.2 L volume…

Q: How many moles of N2 is needed to fill a small room that has a volume of 960 cubic feet and a…

A: Given,Pressure, P = 745 mmHg     Volume, V = 960 ft3Temperature, T = 25 °C = (25 + 273) K = 298…

Q: 3. Which assumptions of the kinetic molecular theory for gases are modified to explain the shape and…

A: KINETIC MOLECULAR THEORY: The theory which was states the particle nature of gases and their…

Q: 1-at atmospheric pressure a sample of Ne gas gas a volume of 155mL at 32C degrees. What volume in…

A: Ideal gas Equation: PV=nRT  P= pressure  V= Volume  R= ideal gas constant  T= temperature  n= number…

Q: In CaCO3 + HCI → CaCl2 + H2O+ CO2 , how many liters of carbon dioxide gas, measured at STP,can be…

A: 1 mole = 6.022×1023 (Avogadro's number ) The mass of one mole of atoms is called atomic mass  For…

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: Lithium metal reacts with nitrogen gas to make the compound lithium nitride. What mass of lithium…

A: To solve this problem we first calculate the number of moles of nitrogen in 58.1 mL at STP  Then…

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.