0
Let's say we're looking to approximate the vapor density of propane (C3H8). The MW of C3H8 is about (3 x 12) + (8 x 1) = 44. If we divide the MW of C3H8 by the MW of air (about 30) ---> 44 / 30 = 1.47. The approximate vapor density of C3H8 is 1.47. Hence, Vapor Density = MW of a gas / MW of air.
Wiki User
∙ 15y ago
Wiki User
∙ 12y agoDensity = mass / volume
In general, the density of a gas depends on several things: the molecular weight of the gas, the temperature, and the pressure. For an ideal gas, the following equation holds:
P*V = n*R*T
where P is the pressure (in atmospheres, ATM), V is the volume (in liters, L), n is the number of moles, R is the gas constant (R = 0.0820574587 L ATM K-1 mol-1), and T is the temperature (in Kelvin, K).
The density of a gas is the number of grams per volume (usually in g/mL or kg/L). Taking the molar mass (MM) of a substance and multiplying it times the number of moles gives the number of grams. Therefore for an ideal gas, using that fact and rearranging the equation above, we have:
Density = (n*MM)/V = (P*MM)/(R*T)
Make sure your units agree in any and all calculations!
Add your answer:
Earn +20 pts
What is the density of gas in the stratosphere?
the density of the stratosphere is about .18
What is the formula for calculating volume of gas?
In Chemistry, 1 mole of ANY gas at room temperature and pressure is 24dm^3 (or 24000 cm^3).
What is the formula to find mass with only the density and volume?
Density rho = mass m / volume V. rho = m / V. Formula: Density equals mass divided by volume.
Density of Natural Gas?
Natural gas main component: Methane, CH4 As gas (at 0 °C) density of Methane = 0.717 kg/m3 (gas) As pressurerised liquid density = 415 kg/m3
Molecular mass equals 2vapour density?
vapor density =density of gas/density of hydrogen gas=mass of a certain vol. of gas/mass of same vol. of hydrogen gas=mass of n molecules of gas/mass of n molecules of hydrogen gas=mass of 1 molecule of gas/mass of 1 molecule of hydrogen gas=molecular mass of gas/molecular mass of hydrogen gas=molecular mass/22 x vapor density=molecular mass
What is the formula of density of air at particular Temp?
from the equation of state pressure = density * gas constant * temperature
How does the density of water change when it moves from a liquid to a gas?
First of all, the density of water decreases when it gets in gas state. Density is depended on mass and volume and thus the formula density= mass/volume. When water gets into gas state, the volume increases which results in an decrease in density.
Is the density of gaseous substance likely to be larger or smaller then the density of liquid or solid substance at the same temperature and why?
Temperature in this instance will not affect density, but rather pressure. The density of the gas will be much smaller than the density of a liquid or solid of the same chemical because it is a gas. The formula for density is mass over volume, and a gas has no measurable mass, making the gas always less dense than the liquid and the solid.
A formula for density?
== Density== Mass/ Volume ==
What are the formula of the density?
In the SI system the unit of density is kilograms per cubic meter.
What is the formula for determining density?
Density = Mass/ Volume
What is the formula to calculate density?
density = mass/volume
Formula in finding the density?
density = mass / volume
The formula for finding density is?
Density = mass / volume
What is the formula for basic density?
Density = Mass/Volume.
What is the formula of mass and density?
Density = mass/volume ============================
List of characteristics of gas?
Several characteristics of a gas are: chemical formula or composition, density, melting point, boiling point, flammability, toxicity, thermal conductivity, stability, reactivity, etc.
