# How do you calculate atmospheric pressure from mass?

## How do you calculate atmospheric pressure from mass?

Divide atmospheric pressure A = 101.3 kPa by g = 9.8 m/s2 to give the mass per unit area (kg/m2). Multiply this by the area of the earth and you’re done.

What is the weight of 1 atmosphere?

about 14.6 pounds per square inch
One atmosphere is equal to the weight of the earth’s atmosphere at sea level, about 14.6 pounds per square inch. If you are at sea level, each square inch of your surface is subjected to a force of 14.6 pounds. The pressure increases about one atmosphere for every 10 meters of water depth.

What is the mass of co2 in the atmosphere?

As of 2018, CO 2 constitutes about 0.041% by volume of the atmosphere, (equal to 410 ppm) which corresponds to approximately 3210 gigatonnes of CO 2, containing approximately 875 gigatonnes of carbon. The global mean CO 2 concentration is currently rising at a rate of approximately 2 ppm/year and accelerating.

### How do you calculate atmospheric scale height?

The scale height is related to the temperature (T) and mean molecular mass (m) of the atmosphere by the formula H = kT/mg where k is Boltzmann’s constant and g is the gravitational acceleration of the body.

How do you measure air masses?

Relative air mass can be calculated in the field using the length of the shadow cast by a vertical pole. A pole used for this purpose is called a solar gnomon. In Figure AT-AM- 2A, the pathlength through the atmosphere (p) is a function of the elevation angle (e).

Does the mass of the Earth include the atmosphere?

The mass of the earth can be and has been measured using Newton’s law of gravity. For the original experiment see this wiki article. The method by construction excludes most of the atmosphere, and the value is valid below the radius where it is measured.

#### How many kg of air is in the atmosphere?

Mass of the Atmosphere

Bibliographic Entry Result (w/surrounding text) Standardized Result
Allaby, Michael. “Air.” Facts on File. 1992: 14. “the total mass of the atmosphere, which is about 5 million billion (5 × 1015) tons” 5.5 × 1018 kg

Does air have weight or mass?

mass
It might not seem like it, but air has weight. Anything with mass has weight, and we know air has mass because (for example) we can feel it when the wind blows. The total weight of the atmosphere exerts a pressure of about 14.7 pounds per square inch at sea level.

What is meant by Torr calculate the height of the atmosphere?

$$1$$ torr is defined as $$\frac 1 {760}$$ of standard atmosphere. Torr is a unit of pressure which is based on the absolute scale. $$1\ torr=133\ Pa$$. Therefore for $$760\ torr$$, height $$H=13.57\times760=10314\ m$$, which is approximately the height of the atmosphere.

## How is air mass flow calculated?

Mass Flow Rate (ṁ) = V × A × ρ Using the same example as above, if the density was 998 kg/m3 then the volumetric flow rate of 282.74 l/min would be equivalent to a mass flow rate of 4.703 kg/s.

What is air mass ratio?

The air mass coefficient defines the direct optical path length through the Earth’s atmosphere, expressed as a ratio relative to the path length vertically upwards, i.e. at the zenith. The air mass coefficient can be used to help characterize the solar spectrum after solar radiation has traveled through the atmosphere.

What is the total mass of Earth?

5.9736 x 1024 kg
The Earth’s mass is 5.9736 x 1024 kg.

### What is the Earth’s mass?

5.972 × 10^24 kgEarth / Mass

What is the mass of 1m3 of air?

1.293 kg
At 0 °C and normal sea level pressure a mole of gas occupies 22.4 liters, so a cubic meter of air has a mass of: 1000/22.4 × 0.02896 = 1.293 kg.”

How is mass distributed in the atmosphere?

About 99.9 percent of the mass of the atmosphere is in the troposphere and stratosphere combined. Of the remaining mass, about 99 percent is in the next layer, called the mesosphere. The mesosphere, or middle atmosphere, begins above the stratopause.

#### Does air explain mass?

Yes, air does have mass and does take up physical space, so, yes, air is made of matter.

What does air mass mean?

We also know that air has mass because the balloon with air was heavier than the balloon without air. So by our definition of matter as something with mass that takes up space, we can see that air is matter!

How do you calculate the mass of the atmosphere?

What the expression for the mass of the atmosphere in the book is based on is that the weight force of the atmosphere applied to the surface of the Earth is estimated as the surface atmospheric pressure times the surface area of Earth (this is reasonable, since F = P · A ). So the weight of the atmosphere is estimated by .

## How much does the atmosphere weigh?

According to the American National Center for Atmospheric Research, “The total mean mass of the atmosphere is 5.1480 × 10 18 kg with an annual range due to water vapor of 1.2 or 1.5 × 10 15 kg, depending on whether surface pressure or water vapor data are used; somewhat smaller than the previous estimate.

How does the density of the atmosphere change with altitude?

Atmospheric density decreases as the altitude increases. This variation can be approximately modeled using the barometric formula. More sophisticated models are used to predict the orbital decay of satellites. The average mass of the atmosphere is about 5 quadrillion (5 × 10 15) tonnes or 1/1,200,000 the mass of Earth.

Is the mass of the Earth’s atmosphere too small?

No, actually he said the mass is too small given that equation. He showed an image where you integrate in cylindrical columns from the surface to the top of the atmosphere, and due to the curvature of the Earth, they diverge as you get higher up so that there are spaces in between the columns.