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Problem: Calculate the density of CH4 gas at STP.
How to solve the problem: Density is mass over volume. (D = M/V), this is what we need to find.
Information you will need:
Molecular weight of CH4 = 16.05 g/mol
STP = Pressure (P) = 1 atm (unit of pressure) and Temperature (T) à 273 K (unit of temperature)
Use the ideal gas law. PV = nRT
n = mass/ mw (molecular weight- "The molecular weight is essentially the same thing as the molar mass except that, as the name implies, it refers to molecules rather than just elements. The molar mass and molecular weight is typically given in units of grams per mole." - Answers.com)
n = unit of mass
V = unit of volume
PV = (mass/mw) RT
Steps:
Re-arrange the ideal gas law equation, so that you get M/V (which is density).
Mass/V = mw (molecular weight) x P/ RT
Mass/V = (16.05 g/mol) x 1 atm / [0.08206 (L)(atm)/ (mol)(K)] (273 degrees K)
Because of the gas law constant, atm (unit of pressure), K (unit of temperature) and mol (numerical unit) cancel out, and we are left with units of grams per L (unit of volume), which is what we want. Thus, our answer will be in units of g/L.
Plug the equation into your scientific calculator.
I got 7.16 x 10^-1 g/L
Wiki User
∙ 12y ago
The volume of 1 mole of any ideal gas at standard temperature and pressure (STP) is 22.4 liters. Therefore, the volume of methane gas at STP would also be 22.4 liters.
Wiki User
∙ 14y agothe density of methane is 0.717 kg/cubic metre
Wiki User
∙ 13y agoUse PM = DRT
so 1atm * 30.08 molecular mass = D * .0821 constant * 273
D = 1. 34 g/L
Wiki User
∙ 7y agoAt STP, one moles will occupy 22.4 liters.
Wiki User
∙ 11y ago1.34
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What is the volume in liters of 0.75 mol of methane gas (CH4)?
The molar volume of an ideal gas at standard temperature and pressure (STP) is 22.4 L/mol. Therefore, 0.75 mol of methane gas would occupy 16.8 liters (0.75 mol x 22.4 L/mol = 16.8 L).
How many moles of methane CH4 are present in 5.6L of the gas at STP?
At STP (standard temperature and pressure), 1 mole of any gas occupies 22.4 liters. Therefore, 5.6 liters of methane is equal to 5.6/22.4 = 0.25 moles of methane.
What is the characteristic of 1 mole of gas at stp?
1 mole of gas at STP (standard temperature and pressure) occupies 22.4 liters of volume. This is known as the molar volume of a gas at STP. Additionally, the gas has a pressure of 1 atmosphere and a temperature of 273 K at STP.
What is the volume in milliliters of 0.0100 mol of ch4 gas at stp?
The volume of 0.0100 mol of CH4 gas at STP (Standard Temperature and Pressure) is 224 mL. This is based on the ideal gas law and the molar volume of a gas at STP, which is 22.4 L/mol. Converting this to milliliters gives 224,000 mL/mol.
What is the volume of a mole of any gas at standard temperature and pressure?
The volume of a mole of any gas at Standard Temperature and Pressure (STP) is approximately 22.4 liters. This is known as the molar volume of a gas at STP and is a standard value used in gas calculations.
What volume will 3.56 moles of methane occupy at STP?
This volume is 79,79 litres.
What is the volume in liters of 0.75 mol of methane gas (CH4)?
The molar volume of an ideal gas at standard temperature and pressure (STP) is 22.4 L/mol. Therefore, 0.75 mol of methane gas would occupy 16.8 liters (0.75 mol x 22.4 L/mol = 16.8 L).
How many moles of methane CH4 are present in 5.6L of the gas at STP?
At STP (standard temperature and pressure), 1 mole of any gas occupies 22.4 liters. Therefore, 5.6 liters of methane is equal to 5.6/22.4 = 0.25 moles of methane.
How many grams of methane gas CH4 are contained in a volume of 144 liters at STP?
At STP (standard temperature and pressure), one mole of any gas occupies 22.4 liters. This means that 144 liters of methane gas contain 144/22.4 moles of CH4. Using the molar mass of CH4 (16 g/mol), you can calculate the mass of methane gas in grams.
What is the characteristic of 1 mole of gas at stp?
1 mole of gas at STP (standard temperature and pressure) occupies 22.4 liters of volume. This is known as the molar volume of a gas at STP. Additionally, the gas has a pressure of 1 atmosphere and a temperature of 273 K at STP.
How many moles of methane are presentin 5.6L of the gas at stp?
0.25 moles
What does a molar volume of a gas at STP occupy?
At STP (standard temperature and pressure), one mole of any gas occupies a volume of 22.4 liters. This is known as the molar volume of a gas at STP.
What does avagadros law say about a gas at STP?
1 mol of any gas has a volume of 22.4 L at STP
What is meant by a volume of STP?
Volume of a gas at STP (standard temperature and pressure) refers to the volume that a gas occupies when measured at a temperature of 0 degrees Celsius and a pressure of 1 atmosphere. This volume is typically given in liters or cubic meters.
What is the volume in milliliters of 0.0100 mol of ch4 gas at stp?
The volume of 0.0100 mol of CH4 gas at STP (Standard Temperature and Pressure) is 224 mL. This is based on the ideal gas law and the molar volume of a gas at STP, which is 22.4 L/mol. Converting this to milliliters gives 224,000 mL/mol.
What is the volume of a mole of any gas at standard temperature and pressure?
The volume of a mole of any gas at Standard Temperature and Pressure (STP) is approximately 22.4 liters. This is known as the molar volume of a gas at STP and is a standard value used in gas calculations.
What does avogadros law say about a gas at STP?
1 mole of gas at STP occupies 22.4 liters.
