Determine the molecular weight (molar mass) of gases at STP which have densities of: 0.090 g/L

Q: 1.75 L of a gas is collected at 28.0 °C and 845.0 mmHg. What is the volume at STP?

A: In this question, we want to determine the volume of gas at STP.  How we can calculate, you can see…

Q: If 10.0 L of a gas at STP has a mass of 19.5 g, calculate the molar mass of the gas

A:

Q: What volume will 2.00 mol of oxygen gas occupy at STP?

A: Given,   moles of oxygen gas = 2 mol ,  at STP. Here STP stands for the standard temperature and…

Q: At STP, how many moles of helium gas would occupy 1.00 L?

A: Given that the volume of helium gas at STP is 1.00 L. To calculate the moles of helium gas at STP.

Q: 5. What is the pressure that must be exerted on 300 mL of a gas which has been collected at STP So…

A:

Q: Which of these two gases has the greater average molecular velocity? Flask A Flask B

A: average velocity of gas =8RTπM where  T = temperature in K and M = molar mass of gas. and R =…

Q: The pressure is recorded as 738 mmHg. Convert this measurement to atmospheres (atm).

A: Given :- pressure in mm Hg = 738 mm Hg  To convert :- 738 mm Hg to atm

Q: How many molecules of CO are in 100. L of CO at STP?

A: Solution -

Q: Illustrate the characteristics of Gases?

A: The characteristics of gases has to be given.

Q: 1.) Air is composed of approximately 78% N2, 21% O2 and 1% percent other gasses. Calculate the…

A: Answer: STP means standard temperature and pressure where standard temperature is 273.15K and…

Q: A gas sample at STP contains 1.47 g oxygen and 1.66 g nitrogen. What is the volume of the gas…

A: We are given the mass of two gases , we have to find the volume at STP

Q: Two gases, He and Ne, are collected in identical 2.00 L containers at STP. How many moles of Neon…

A: Given, Volume = 2 L, at STP pressure = 1 atm , R =  , T = 0°C = 273.15 K

Q: What volume will a 72 g of Oxygen gas has occupy at STP?

A: Here given ,mass of oxygen is 72 gm. the molas mass of oxygen is 32gm so 72gm means =72/32=2.25 mol…

Q: Calculate the density of nitrogen gas, in grams per liter, at STP. Assume you have 1 L, calculate…

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

Q: What volume will 12.5 g oxygen gas occupy at STP?

A: Given data,Mass of oxygen=12.5gStandard temperature=273.15 Kstandard pressure=1 atm

Q: Among the relationships of volume, pressure, and temperature of gas, which do you think explains why…

A:

Q: What volume will 1.34mol of Helium Gas occupy at STP?

A:

Q: A sample of carbon dioxide gas collected at a pressure of 745 mm Hg and a temperature of 277 K has a…

A:

Q: Determine the number of moles in a container of gas at STP with a volume of 99.2 L.

A: We know, at STP, one mole of any gas occupies 22.4 L volume. Or, 22.4L volume is occupied by 1mol of…

Q: Calculate the molar mass of a gas at 408 torr and 79°C if 206 ng occupies 0.206 µL. g/mol

A:

Q: Calculate the molar mass of a gas if a 1.00-L sample of the gas at STP has a mass of 1.16 g. Show…

A: To solve this problem first we have to calculate the number of moles of gas and then the molar mass…

Q: Does the size of Gas particles affect the variables of gas law?

A: Does the size of Gas particles affect the variables of gas law? Explanation is given below.

Q: What is the density of oxygen at STP?

A: density of O2 = mass of O2/volume of O2 at STP At STP :-  1 mol gas = 22.4 L

Q: A certain mass of nitrogen gas occupies a volume of 5.49 L at a pressure of 5.75 bar. Calculate the…

A: IDEAL GAS EQUATION  PV=nRT P 1V 1=P2 V2   P 2= P 1V 1/V2

Q: What volume does 4.0 moles of a gas occupy at STP?

A: Mole concept is to be applied. As per mole concept 22.4 L of a gas at S.T.P is occupied by 1 mole of…

Q: how many molecules of hydrogen sulfide gas would be in a 11.2 L sample of gas at STP? what would the…

A: Given : Volume of gas = 11.2 L And STP conditions i.e standard temperature (273 K ) and pressure…

Q: How many moles of a gas can fit in one liter under STP?

A: STP means standard temperature and pressure that is 273 K temperature and 1atm pressure.We have…

Q: What is the volume in mL occupied by 765 g of argon gas at STP?

A: 1- First calculate the moles of argon gas :  Moles of argon gas = [ Mass / Molar mass ]  Moles of…

Q: A sample of gas occupies a volume of 384ml  at 60 Torr and 27ﾟC. What volume will occupy at STP?

A: The combined gas law states that the ratio of the product of the original pressure and volume of a…

Q: #14: 2.00 L of a gas is collected at 25.0 °C and 745.0 mmHg. What is the volume at STP?

A: Volume at STP calculated as follows

Q: A sample of argon gas collected at STP occupies a volume of 12.9 L. How many moles of gas does the…

A: At STP, we have the volume of 1 mole of sample as 22.4 L, so we can calculate the number of moles of…

Q: what is the density of He at STP? why do helium-filled balloons rise in air?

A: At STP : Pressure, P = 1 atm Temperature, T = 273.15 K Molar mass of He, M = 4 g/mol   The density…

Q: Can the gas laws be explained by molecular behavior? How can molecular behavior explain gas…

A: Q1) The gas laws can be explained by the molecular behaviour.

Q: Calculate the number of moles and the mass of gas in 3.40 L of He at STP

A: Applying concept of gas law.

Q: At STP how many mL will 30.1 mol of any gas occupy?

A:

Q: Calculate the volume which 1.00 mole of a gas occupies at STP.

A:

Q: 3.00 L of a gas is collected at 35.0°C and 705.0 mmHg. What is the volume at STP?

A:

Q: What is the density of ammonia gas, , at 35°C and 757 mmHg? Obtain the density in grams per liter.

A: Given: Temperature = 35.0 oC = 308 K Pressure = 757 mmHg = 0.9960 atm Molar mass of ammonia gas…

Q: A sample of argon gas at STP occupies 29.0 L. What mass of argon is present in the container? in…

A: Given, the volume of argon gas at STP = 29.0 L = 29 dm3 which  is a million moles of gas occupies 24…

Q: How many molecules exit in 28.45 L of nitrogen gas at STP?

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

Q: How many liters will 3.25 moles of carbon monoxide occupy at STP?

A: One mole of any gas occupies 22.4 liters of volume at STP. For example: One mole of N2 gas occupies…

Q: How many moles of nitrogen gas are present in 635 liters of the gas when it is at STP?

A: Given -> Volume = 635 L At STP-> T = 273K Pressure = 1 atm

Q: 7. A 110.0 mL sample of air is collected at 21°C and 776 mmHg. What is the volume at STP?

A: Using ideal gas equation 2 times volume of gas at STP comes as 104.3ml

Q: What mass of argon is present in the container?

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

Q: Calculate the number of moles and the mass of gas in 2.50 l of ar at stp

A: Given: Volume of Ar is 2.50 L

Q: A 200 mL sample of oxygen gas is collected at 26o C and a pressure of 690 mmHg. What volume will the…

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

Q: What is the mass, in grams, of 880mL of carbon dioxide gas measured at STP?

A: Ideal gas law pV = nRTwherep = pressureV = volumen = molesR = gas constantT = temperaturenow at STPP…

Kinetic-Theory of Gases

Kinetic theory of gases is the model or method which was developed in the 19th century by Maxwell and Boltzmann. This is possible as the interatomic force which is of short-range forces that are important for solids and liquids can be neglected for gases. This theory or gas law gives a molecular interpretation of the pressure and temperature of a gas and is consistent with gas laws and Avogadro’s hypothesis. This theory is very helpful to correctly explain the specific heat capacities of many gases, kinetic energy and it also explains the transport qualities such as viscosity, thermal conductivity, and diffusion with molecular parameters. As stated in the kinetic-molecular theory, the temperature of a substance or gas particle is related to the average kinetic energy of the particles of that substance. When a substance is heated, some of the absorbed energy is stored within the particles, while some of the energy increases the motion of the particles, called average kinetic energy.