Share
Explore BrainMass

Gas Laws

Partial Pressure of Oxygen Gas

What is the partial pressure of oxygen gas produced if 8.42 g of hydrogen peroxide decomposes at 22 degrees C into a container with a fixed volume of 3.78 L (assuming no oxygen is initially present)? 2H2O2 --> 2 H2O +O2

Chemistry Questions

1. Chlorine gas occupies a volume of 1.20 liters at 725 torr pressure. What volume will it occupy at 1 atm pressure? 2. Fluorine gas exerts a pressure of 975 torr. When the pressure is changed to 1.50 atm, its volume is 250 mL. What was the original volume? 3. Helium occupies a volume of 3.80 Liters at -45 &#61616;C. Wh

Problem involving the application of ideal gas law

Mole and Mass relationship in chemical equation: 1. What mass of ammonia, in grams, can be made from 440g of H2? N2+3H2-2NH3 The combined Gas Law: 1.If the gas present in 4.65L at STP is changed to a temperature of 15C and pressure of 756mmHg, what will be new volume? The Ideal Gas Law: 1. Calculate the

Gas Laws

1. A diver at a depth of 100 ft (pressure approximately 3 atm) exhales a small bubble of air with a volume equal to 100 mL. What will be the volume of the bubble (assume the same amount of air) at the surface? 2. What would the volume of gas contained in an expandable 1.0 L cylinder at 15 MPa (1MPa = 10^6 Pa) be at 1 atm (assum

Final gas pressure

A sample of ammonia gas with a volume of 7.0 mL at a pressure of 1.68 atm is compressed to a final volume of 2.7 mL at constant temperature. Use the ideal gas law to calculate the final pressure. a. 100 atm b. 2.2 atm c. 1 atm d. 4.4 atm

Gas and Stoichiometry with Avogadro and Dalton's

Please show all work. 1.)(Ideal Gas Law) How many moles of chlorine atoms are there in a container that holds 1.529 kg of XCl5 gas (where X = unknown element) at 600.5°C at a pressure of 1213 torr? The density of the gas is 4.63 g/L. 2.) (Ideal Gas Law) A chemist carries out a reaction and isolates a gaseous product.

Nitrogen gas pressure problem

A nitrogen container has 100.0 liters of gas at a pressure of 3200 psi ruptures in a room at 28° C and 0.92 atm pressure. What volume will the nitrogen gas occupy in the room after the bottle empties? Please show all steps. 2 A typical vacuum system can obtain a pressure of 1.0 x 10-8 (-8 power) torr. Calculate the numbe

Calculations for decompositions of a solid using gas laws under STP. How to use molecular masses and the given equation to find out the solution.

What volume of carbon dioxide at STP is produced by the complete decomposition of 24 g of CaCO3--2.69 dm3, 4.64 dm3,5.37 dm3, 7.68 dm3 To solve the question we write down the equation of the reaction: CaCO3 -----> CO2 + CaO This equation is balanced out. The number of atoms of every element is the same on the le

Calculation using gas law

Given 20g potassium chlorate, how many cubic decimeters of oxygen would be produced at STP 2 KCLO3----> 2 KCL(cr) + 3O2(g)

Calculating number of molecules in a container

How many molecules of N2 are in a 500mL container at 780mm Hg and 135 degrees celsius? What formula/s do I use?

Volume and Pressure

1. What is the volume of a quantity of a gas at 172 Celcius, if its volume is 262 mL at -25 Celsius and the pressure remains constant. 2. What is the pressure, in inches of mercury, of a gas that originally had a volume of 252 mL, under a pressure of 0.834 atmosphere and a temperature of 45 Celsius if the volume is reduced to

Pressure and Volume using Boyle's Law

A sample of nitrogen has a volume of 50 L at a pressure of 760. mmHg. What is the volume of the gas at each of the following pressures if there is no temperature change. A. 1500 mmHg (I have solves the problem for A!) B. 2.0 atm. C. .500 atm According to my text book, the answers for P3 and P4, are 25 L and 100.

Need to know how to set up a problem with changes in pressure without knowing volume.

The problem is this.... A gas with a volume of 4.0L is contained is a closed container. Indicate the changes in pressure when the volume undergoes the following changes at a constant temperature. A. The vloume is compressed to 2 L. B. The vloume is allowed to expand to 2 L. C. The volume is copmressed to .40 L. (Thi

Ideal gas law: What volume of O2 (g) is consumed in the combustion of 125g of gaseous dimethyl ether (CH3)2) ?

What volume of O2 (g) is consumed in the combustion of 125g of gaseous dimethyl ether (CH3)2) if both gas volumes are measured at the temperature and pressure at which the density of dimethyl ether is 1.81g/l?

What volume of oxygen gas is required to burn 0.5562 of propane gas C3H8 if both gases are measured at the same temperature?

What volume of oxygen gas is required to burn 0.5562 of propane gas C3H8 if both gases are measured at the same temperature?

Ideal Gas Law for Liquid Hydrocarbon

A liquid hydrocarbon (contains only C and H) is found to have 16.37% H by mass. A 1.158 gram sample has a volume of 385 ml at 71 degrees Celsius and 749 Torr. What is the molecular formula of the hydrocarbon?

Canonical Partition Function Q(N, V, T)

An approximate canonical partition function for a dense gas is: Q(N, V, T) = 1/N! [2(pi)(mk_nT / h^2]^3N/2 (V - Nb)^Nexp[(alphaN^2/Vk_BT)]. Where m is the mass of the particles and a and b are molecular parameters (which are independent of temperature). Calculate the energy, entropy, pressure, and chemical potential for

Equilibrium and Reactions

Question 1 At 100oC, the equilibrium constant, KC, for the reaction COCl2(g) ?---? CO(g) + Cl2(g) has a value of 2.19 x 10-10. Is the following mixture at equilibrium? If not, indicate the direction in which the reaction must proceed to achieve equilibrium. [COCl2] = 5.00 x 10-2 M, [CO] = [Cl2] = 3.31 x 10-6 M Question 2

Hydrogen Gas Problem Using the Ideal Gas Law

Consider a vehicle powered by hydrogen gas. a. About 3.1 kg of H2 is required for a vehicle to have a 500 km range. Assume ideal gas behavior and a storage tank of 60 L (a comparable size to conventional gasoline vehicles). What tank pressure atm might one expect at 25 degrees celsius? b. Since their discovery in 1991, tin

Partial Pressure of Products and Reactants

A 10.0 L tank contains nitrogen gas and chlorine gas at partial pressure of 1.00 atm each, at a temperature of 300K. The mixture is allowed to react, producing nitrogen trichloride. Calculate the partial pressures of the products and reactants.

Your Next Breath Contains a Molecule from Caesar's Last Breath

Take a deep breath of air and assume it is one liter of air. What is the probability that the liter of air contains a molecule from Julius Caesar's last breath (also assume a liter of air)? Assume that the nitrogen that existed in the atmosphere ~ 2000 years ago is that which is currently present and that the liter of air has

Physical chemistry: What is the partial pressure of the molecular hydrogen in the container?

A 400 L container at temperature of 4 celsius initially contains 0.25 mol He gas. Molecular hydrogen, which is a gas at 4 celsius is added until total pressure is 9.38*10^-2 atm. What is the partial pressure of the molecular hydrogen in the container?

About 3.2 kg of H2 is required for a vehicle to have a 500 km range...What tank pressure atm might one expect at 25 degrees celsius?..

109. Consider a vehicle powered by hydrogen gas. a. About 3.2 kg of H2 is required for a vehicle to have a 500 km range. Assume ideal gas behavior and a storage tank of 60 L (a comparable size to conventional gasoline vehicles). What tank pressure atm might one expect at 25 degrees celsius? b. Since their discovery in 1991, ti

What mass of formaldehyde gas must be released?

What mass of formaldehyde gas (in grams) must be released from building materials, carpets, etc. in order to produce a concentration of 0.50 ppm of the gas in a room having dimensions of 4.0m X 5.0m X 1.0m? Hint: Calculate volume of room in cubic meters and convert to liters. Use ideal gas law and concentration to calculate a

Volume of Air Necessary for Conversion of CO2 to H20

Assume that a pile of waste contains 340.0 mg/L of biodegradable CH2O and is processed through a 200000.0 L/day sewage treatment plant which converts 40% of the waste to CO2 and H2O. Calculate the volume of air (at 25 degrees, 1 atm) required for this conversion. Assume that the O2 is transferred to the water with 20% efficiency

Osmotic Pressure

How would you prepare 1.0 L of an aqueous solution of sodium chloride having an osmotic pressure of 25 atm at 17°C?

Gas problem dealing with volume, Pressure and Temperature

2C H10 + 21O2 --> 16 CO2 + 10H2O if 950 grams of O2 are used in the above reaction How many Liters od CO2 can be collected @ a Pressure of 700mmhg + Temperature of 47degrees C ?

Reaction Between Hydrogen Selenide and Tin

See attachment. The composition of hydrogen selenide (H2Se) can be determined by heating tin (Sn) in a measured volume of the gas. The hydrogen selenide is decomposed, producing solid tin selenide (SnSe) and hydrogen gas. If the temperature and pressure are unchanged, the gas volume when the decomposition is over is the same

Equilibrium Concentrations

At 2400K, Kc=2.5 x 10 -3rd power. Equilibrium is obtained at 2400K starting with a reaction mixture of 0.20 mil of N2 and 0.20 mil of O2 in a 5.00 L vessel. What equations or processes would I used to find the concentrations in moles per liter for N2, O2, and NO?

Vapor pressure and temperature

The vapor pressure of water at 22 degrees C is 19.800 torr. If you put 26.662 g of water in a cubic container that is 1.1000 m on an edge, will there be any liquid water remaining in the container at 22 degrees C or will it all be vapor? R = 0.0820578 L*atm/K*mol.