3. One of the assumptions of KMT is that the ideal gas particles occupy negligible volume compared to the container. a.If the density of liquid He is 0.125g/cm3, find the volume occupied by one molecule. b.If the density of helium gas at STP is 0.179g/L, find the volume occupied by one molecule. c. Gases start to deviate from ideal behavior at low temperatures or high pressures. Use your answers from (a) and (b) to propose a threshold for pressure. In other words, what is the maximum pressure for which you would predict helium would still behave as an ideal gas (estimation not exact)?

Q: The following involve pressure-volume-temperature-amount data for a sample of a gas.  Each set part…

A:

Q: A gas with a volume of 0.526 L is initially at an unknown temperature. The gas is submerged in…

A: Charles law states that the volume of an ideal gas is directly proportional to the absolute…

Q: A sample of fluorine gas occupies 810 mL at 205 K and 90.O kPa. What volume would the gas occupy at…

A: Gas law PV=nRT PV/T=nR (nR=constant) (P1 V1)/T1=(P2 V2)/T2 Option (4) is correct.

Q: A steel tank with a volume of 358L is filled with 1.66x1025 molecules of O2. Calculate the pressure…

A:

Q: At STP a sample of gas with a mass of 29.9 grams occupies 3.80 L. What is the molar mass of this…

A: 1 mole = 6.022×1023 [Avogadro's number ] The mass of one mole of molecules of a gas is called molar…

Q: GHA Calculating the mass of a gas collected over water 0/5 Sometimes in lab we collect the gas…

A: Suppose the H₂ gas evolved by a certain chemical reaction taking place at 35.0 °C is collected over…

Q: 1. A 9.70 liter sample of gas measured at 33.0°C and 1.59 atm of pressure has a mass of 14.28 g.…

A: An ideal gas equation shows the relationship between pressure (P), volume (V), and temperature (T)…

Q: sample of gas has an initial volume of 5.3 LL at a pressure of 764 mmHg.    A. If the volume of the…

A:

Q: 9. A gas exerts a pressure of 0.975 atm when at 20.0°C and in a 1.75 L vessel. A. How many moles of…

A: Use the ideal gas equation to find the moles of gas present,PV = nRT n = PVRT  Now n = moles of gas…

Q: Given the model, answer the following questions regarding effusion. The orange spheres have a…

A: PART (A):Balloon ‘A’

Q: an unknown gas was found to be 64.24% carbon and 1-.78% hydrogen by mass, with the remainder being…

A: (a) We are given  Carbon=64.24% Hydrogen==1.78% nitrogen=(100-64.24-1.78)%=33.98% Find empirical…

Q: 3.0 L of a gas is at a temperature of 78 °C. Find the volume of the gas at standard temperature.

A:

Q: Sometimes in lab we collect the gas formed by a chemical reaction over water (see sketch at right).…

A: Given: T = 35oC = 35 + 298 = 308 k V = 106. mL = 0.106 L

Q: There are 2.00 moles of gas with a volume of 2.30 L. And another 2.00 moles of gas were added to a…

A: The volume of the 2.00 moles of the gas is = 2.30 L The moles of added gas is = 2.00 moles The final…

Q: 2.90 x 10^-3g of unknown gas are produced at 298k and 1.00 atm. The volume of gas generated was 3.52…

A:

Q: Closed end H20 Gas F2 Xe 26.4 cm

A: Answer: Generally the liquid in the manometer is mercury, so let's consider that the manometer…

Q: [References] Use the References to access important values if needed for this question. A sample of…

A:

Q: The mole fraction of Nitrogen in air is 0.14 and the mole fraction of Oxygen in air is 0.66…

A: Pressure of room( Ptotal) = 1 atm (standard atmospheric pressure) mole fraction of Oxygen in…

Q: 2. With the given information: i) State the gas law that can be used and ii) Solve for the unknown.…

A: Dear student since you have asked multiple questions but according to guidelines we will solve 1st…

Q: 2. Calculate the volume (in L) of 20.5 g of NH3 gas at 0.658 atm and 25 °C. Show your work including…

A: Given, Mass of NH3 = 20.5g. Pressure = 0.658atm. Temperature = 25oC. The moles of NH3 can be…

Q: Which of the following statements about gases is FALSE? a. Lighter gas molecules effuse faster than…

A:

Q: che mass of CC

A:

Q: A 5.00 liters volume of methane gas goes from 60C to 30C if pressure remains constant final volume?

A: The problem is asking for the final volume of a gas after a temperature change. This is a typical…

Q: Find the volume of 3.0 × 1025 molecules of Neon gas at STP.

A: We know that, at stp ( standard temperature and pressure) 1 mole of any ideal gas occupies the…

Q: A gas with a volume of 0.528 L is initially at an unknown temperature. The gas is submerged in…

A: Charles’ law also sometimes referred to as the law of volumes gives a detailed account of how gas…

Q: If 2.0 moles of each gas are taken and kept under the same conditions of temperature and pressure,…

A: Which gas occupy largest volume ?

Q: A gas with a volume of 0.56 L is initially at an unknown temperature. The gas is submerged in…

A: The temperature and volume relation is given by Charles law (at constant P and n): VT=constant

Q: What volume is occupied by a 1.02 mol sample of hydrogen gas at a temperature of 0 °C and a pressure…

A: The ideal gas equation is PV = nRT P = pressure of gas  V = Volume of gas  n = number of moles of…

Q: What are the densities of the following gases at STP? a. CH2F2 Density = b. COCI2 Density = с. НP…

A: Given  (a) CH2F2      Density = ?  (b)  COCl2      Density = ?  (c)  HF         Density = ?

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 gas has a density of ______g/L at a pressure of 1.39 atm and a temperature of 54…

A: A gas is said to be ideal if it follows ideal gas equation PV = RT

Q: What is the molecular mass of this gas?  =______ g/mol?

A: Volume = 530 cm3  Volume = 0.530 L Pressure = 145 kPa 1 kPa = 0.0099 atm 145 kPa =0.0099×145 atm…

Q: A boy with pneumonia has lungs with a volume of 2.0 L that fill with 0.085 mol of air when he…

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

Q: 3. An unknown gas effuses through a capillary in 60 seconds. The same volume of hydrogen escapes in…

A:

Q: The initial volume of a gas sample is 6.8 L at a pressure of 780 millibar. What pressure (in bar)…

A: Given: Initial volume, V1 = 6.8 L Initial pressure, P1= 780 millibar *(1 bar / 1000 millibar) = 0.78…

Q: A sample of oxygen gas collected at a pressure of 761 mm Hg and a temperature of 291 K has a mass of…

A:

Q: 2. A fixed quantity of gas at 22°C exhibits a pressure of 762 torr and occupies a volume of 5.52 L…

A: 2. a) Here given---- Initial Pressure (P1) = 762 torr = 1.002 atm Initial Temperature (T1) = 22 0C =…

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

A: According to Charles' law : At constant pressure, Temperature is proportional to the volume of a…

Q: What is a real gas, and how does it relate to the kinetic molecular theory? Explain how two…

A: The ideal gases are gases which follow the ideal gas equation. The behaviour of gas molecules of a…

Q: A sealed container with a volume of 63.8 mL is filled with a gas at 22°C at 747mmHg. The mass of the…

A: We will use ideal gas equation to find molar mass of gas and then estimate the gas .

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.