A 1.42-g sample of helium and an unknown mass of O2 aremixed in a flask at room temperature. The partial pressureof the helium is 42.5 torr, and that of the oxygen is158 torr. What is the mass of the oxygen?

Q: White phosphorus melts and then vaporizes at high tempera-ture. The gas effuses at a rate that is…

A: The Scottish physical chemist Thomas Graham gives direct relation between rate of effusion of gas…

Q: A flask that can withstand an internal pressure of 2500 torr, but no more, is filled with a gas at…

A: Given data is as follows: The final pressure of the flask P2 = 2500 torr The final temperature of…

Q: In an experiment, hydrogen sulfide gas is collected in a 1.25 L flask at 21 degrees celsius and 758…

A: Given, Volume  = 1.25 L Temperature = 21°C = 21+273 = 294 K Pressure = 758 torr Mass of H2S = ?

Q: A 275-mL flask contains pure helium at a pressure of 752 torr.A second flask with a volume of 475 mL…

A: Dalton's Partial Pressures law states that the overall pressure exerted by the mixture of gasses is…

Q: (a) What is the total volume of gaseous products,measuredat 350C and 735 torr, when an automobile…

A: (A) The component of gasoline, i.e. the octane (C8H18) when burnt in presence of oxygen, it gives…

Q: A 1.00-L gas sample at 100.°C and 500. torr contains 47.0% helium and 53.0% xenon by mass. What are…

A:

Q: A gaseous mixture of Oz and N2 contains 37.8 % nitrogen by mass. What is the partial pressure of…

A: Given :-  percent composition by mass of N2 = 37.8%  total pressure of gaseous mixture = 765 torr…

Q: A balloon at 23 °C contains 0.32 moles of helium gas at 2432 torr. The volume of the helium is 2.45…

A: The initial conditions are as follows: Initial pressure, P1 =2432 torr Initial Volume, V1 = 2.45 L…

Q: A balloon is filled with a mixture of 1.18 g of carbon dioxide (44.01 g/mol) and 1.24 g of oxygen…

A: The molar mass of Cabon Dioxide =  44.01 g/mol The molar mass of Oxygen = 32.00 g/mol V = 1.17L  T =…

Q: has

A: According to this law, at constant temperature volume is inversely proportional to the pressure…

Q: A gas-filled weather balloon with a volume of 65.0 L is released at sea-level conditions of 745 torr…

A: According to the ideal gas equation, PV = nRT where P, V, n, R and T are the pressure, volume,…

Q: A sample of carbon monoxide was collected over water at a total pressure of 756 torr and a…

A: Given; Total pressure = 756 torr Temperature = 18oC

Q: Calculate the density of sulfur hexafluoride gas at 703 torr and 21 °C. Express the density in grams…

A: Given, Gas = sulfur hexafluoride pressure =703 torr temperature =21°C=(21+273)K=294 K

Q: At what temperature will a 5.00 g sample of neon gas exert a pressure of 495 torr in a 8.00 L…

A: The ideal gas equation is PV = nRT P = pressure of gas V = volume  n = moles of gas = mass/molar…

Q: A sample of nitrogen occupies 750 mL at 24 degrees Celsius at 595 torr. At what temperature ( in…

A:

Q: A 275-mL flask contains pure helium at a pressure of 746 torr. A second flask with a volume of 475…

A: Total volume after the stopcock is opened. The total volume is 275 ml + 475 ml = 750 ml. Since the…

Q: 1.00-L gas sample at 100.C and 650, torr contains 52.0% helium and 48.0% xenon by mass. What are the…

A: Total pressure = 650 torr

Q: A 1.00-L gas sample at 100.°C and 500. torr contains 53.0% helium and 47.0% xenon by mass. What are…

A:

Q: What are the final partial pressures

A:

Q: If a sample of a gas has a volume of 566 mL at 658 torr, what will its volume be if th pressure is…

A: Since you have posted multiple questions.we will solve the first question for you.To get the…

Q: At 25.0 ° C, a 10.00 L vessel is filled with 5.25 moles of Gas A and 2.10 moles of Gas B. What is…

A:

Q: the pressure of Penguinite gas (MM = 85.1 g/mol) is measured to 800. torr at 35 ° calculate its…

A: Temperature = 35°C = 308.15 K Pressure = 800 Torr Molar mass = 85.1 g/mol Density = ? Ideal gas…

Q: How many grams of solid calcium carbonate must decompose to produce solid calcium oxide and 526.0 mL…

A: The amount of solid calcium carbonate decomposed is to be calculated.

Q: A mixture of chromium and zinc weighing 0.363 grams was reacted with excess HCl. After all the metal…

A:

Q: Small quantities of hydrogen gas can be prepared by the addition of hydrochloric acid to zinc.  A…

A: Total pressure = Pressure of H2 gas + pressure of H2O vapor Therefore, Pressure of H2 gas = Total…

Q: molar mass

A:

Q: A large flask with a volume of 936 mL is evacuated and found to have a mass of 134.66 g. It is then…

A:

Q: A 3.00-L gas sample at 100. ̊C and 600. torr contains55.0% helium and 45.0% xenon by mass. What are…

A:

Q: A balloon with a 2.00 L volume contains 1.10 moles of gas. How many moles would have to be released…

A: The ideal equation for gas is given by,                                               PV = nRT…

Q: A sample of oxygen, O2, occupies 32.2 mL at 30 °C and 452 torr. What volume will it occupy at –70 °C…

A: Given data, Volume V1 = 32.2 mL Temperature T1 = 30°C=(273+30)=303 K Temperature T2 =…

Q: Is the relationship between pressure and temperature direct or inverse? Explain

A:

Q: A sample of oxygen occupies 47.2 liters under a pressure of 1240 torr at 25oC. What volume would it…

A:

Q: A gas, being held at a constant amount and temperature, is held inside a 1200 mL container with an…

A:

Q: To what temperature must 4.24 L of chlorine at 40.6 °C and 829 torr be heated in order to have a…

A: Given;

Q: You have a sample of gas at -33 °C. You wish to increasethe rms speed by a factor of 2. To what…

A: Since the rms speed of gas is directly proportional to the square root of its temperature in K as…

Q: To what temperature must 4.14 L of chlorine at 35.3 °C and 698 torr be heated in order to have a…

A: Given: Initial Pressure, P1=698 torr The initial volume, V1= 4.14 L The initial temperature, T1=35.3…

Q: 4 NH3 (g) + 5 O2 (g) = 4 NO (g) + 6 H2O (g)A sample of NH3 is added to an initially evacuated 2.00 L…

A: Given dataPartial pressure of NH3= 415torrPartial pressure of O2 = (875-415) torr…

Q: The air in a bicycle tire is bubbled through water and collected at 25°C. If the total volume of gas…

A: Convert the given pressure in units of atm. Convert given temperature in Kelvin.

Q: A gas at 511 torr and 1.8 liters is allowed to expand to 4.2 liters. What is the final pressure of…

A: Charles's law: P1V1=P2V2 (at constant temperature and amount)

Q: A sample of nitrogen gas at 298 K and 745 torr has a volume of 37.42 L. What volume will it occupy…

A: To solve this problem we will use the Boyle's law   which is given as  P1V1  = P2V2      Where,  P1…

Q: A gas at 527 torr and 1.1 liters is allowed to expand to 4.5 liters. What is the final pressure of…

A: Given, initial pressure =527 torr initial volume of gas=1.1 L final  volume of gas=4.5 Lwe are asked…

Q: How many grams of solid calcium carbonate must decompose to produce solid calcium oxide and 544.0 mL…

A:

Q: A gas at 537 torr and 1.9 liters is allowed to expand to 4.7 liters.  What is the final pressure of…

A: Boyle’s law is a gas law which states that the pressure exerted by a gas (of a given mass, kept at a…

Q: Using the same sample of gas (P1 = 615 torr, T1 = 5 ∘C ), we wish to change the pressure to 6150…

A: The scientists studied the behavior of gases with respect to pressure, temperature, volume and…

Q: Using the same sample of gas (P1= 795 torr , T1 = 39 ∘C ), we wish to change the pressure to 7950…

A: Initial pressure, P1 = 795 torr Initial temperature, T1 = 39 ∘C = 312 K Final pressure, P2 = 7950…

Q: Using the same sample of gas (P1 = 575 torr , T1 = 18 ∘C ), we wish to change the pressure to 5750…

A:

Q: A sample of gas at 756 torr and 230C occupies 123 mm3. What would its volume be if the (75.4…

A: Boyle’s law is a gas law which states that the pressure exerted by a gas (of a given mass, kept at a…

Q: A sample of nitrogen gas occupies a volume of 9.82 L at 67.0°C and 347 torr. torr. f the volume of…

A: Solution : We will use the ideal gas equation in this case as initial pressure, volume, and…

Q: The average molecular speed in a sample of NO2 gas at a certain temperature is 376 m/s. what is the…

A: The given in formation is as follows: The average molecular speed of NO2 = 376 m/s The average…

Q: A 144.6 mL sample of O2 gas at 509.6 torr is compressed at constant temperature to 87.5 mL. Predict…

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.