The standard atmosphere (symbol: atm) is a unit of pressure defined as 101325 Pa. It is sometimes used as a reference pressure or standard pressure. It is approximately equal to Earth’s average atmospheric pressure at sea level. Atmosphere.
What is an atm physics?
An atmosphere (atm) is a unit of measurement equal to the average air pressure at sea level at a temperature of 15 degrees Celsius (59 degrees Fahrenheit). One atmosphere is 1,013 millibars, or 760 millimeters (29.92 inches) of mercury. Atmospheric pressure drops as altitude increases.
What do you mean by 1 atm?
One standard atmosphere, which is also referred to as one atmosphere, is equivalent to 101,325 pascals, or newtons of force per square metre (approximately 14.7 pounds per square inch). See also millibar. Related Topics: atmosphere atmospheric pressure unit (Show more)
What is the formula of atm?
It (atm) is used to express atmospheric pressure.
What is the Relation Between Bar and Atm?
Bar to atm formula 
1 bar = 0.986923 atm 
atm to bar formula 
1 atm = 1.01325 bar 
What is atm in chemistry? – Related Questions
What are the units of atm?
A standard atmosphere, abbreviated atm, is the unit of pressure equal to the average atmospheric pressure at sea level. Specifically 1 atm = 101,325 pascals, which is the SI unit of pressure.
How many moles is 1 atm?
Molar Volume at 0°C and 1 atm = 22.4 L/mol.
What is the volume of 1 atm?
The volume of 1.00mol of any gas at STP (Standard temperature, 273.15 K and pressure, 1 atm) is measured to be 22.414L.
What is 1 atm in Boyle’s law?
1 atm = 101325 Pa. The English scientist Robert Boyle performed a series of experiments involving pressure and, in 1662, arrived at a general law—that the volume of a gas varies inversely with pressure. PV = constant.
How many grams are in atm?
Standard Atmosphere to Gramforce/sq. Centimeter Conversion Table
Standard Atmosphere [atm] 
Gramforce/sq. Centimeter 
1 atm 
1033.2274527999 gramforce/sq. centimeter

2 atm 
2066.4549055998 gramforce/sq. centimeter 
3 atm 
3099.6823583997 gramforce/sq. centimeter 
5 atm 
5166.1372639994 gramforce/sq. centimeter 
Why is atm 760 mmHg?
Normal atmospheric pressure is defined as 1 atmosphere. 1 atm = 14.6956 psi = 760 torr. Based on the original Torricelli barometer design, one atmosphere of pressure will force the column of mercury (Hg) in a mercury barometer to a height of 760 millimeters.
What is the value of 1 atmospheric pressure?
One atmospheric pressure at sea level is equal to 760 cm of Hg.
How do you calculate atm concentration?
Use the rearranged ideal gas law to determine the concentration. For example, with a temperature of 298 K and a pressure of 0.031 atm, the formula is 0.031 atm / (0.0821 atm * liter/mole * K) * (298 K). This is equal to 0.0013 mol/L, or moles per liter.
Does PV nRT use atm?
P = Pressure (atm) V = Volume (L) n = moles R = gas constant = 0.0821 atm•L/mol•K T = Temperature (Kelvin) The correct units are essential.
How do you convert moles to ATM?
Calculate the pressure of the gas, P, in units of atmospheres according to P = nRT / V. For example, if the sample of gas occupying 623 liters at 299 Kelvin represents 55 moles of gas, then P = (55 x 0.08206 x 299)/623 = 2.17 atmospheres.
What does PV nRT stand for?
Ideal Gas Law. PV = nRT. The pressure of a gas times its volume equals the number of moles of the gas times a constant (R) times the temperature of the gas. The ideal gas law is the final and most useful expression of the gas laws because it ties the amount of a gas (moles) to its pressure, volume and temperature.
What is the formula for volume of gas?
First, let’s review the ideal gas law, PV = nRT. In this equation, ‘P’ is the pressure in atmospheres, ‘V’ is the volume in liters, ‘n’ is the number of particles in moles, ‘T’ is the temperature in Kelvin and ‘R’ is the ideal gas constant (0.0821 liter atmospheres per moles Kelvin).
What is the unit for gas?
Gas is sometimes measured in cubic feet at a temperature of 60 degrees Fahrenheit and an atmospheric pressure of 14.7 pounds per square inch. Gas production from wells is discussed in terms of thousands or millions of cubic feet (Mcf and MMcf). Resources and reserves are calculated in trillions of cubic feet (Tcf).
What is the density of water?
997 kg/m³
Water / Density
How do u calculate pressure?
Pressure on surfaces
 To calculate pressure, you need to know two things:
 Pressure is calculated using this equation:
 pressure = force ÷ area.
What is the unit of water pressure?
Water pressure is measured and expressed in kilopascals (kPa) and metres head (m head). Many people prefer high water pressure to low water pressure.
What is the pressure of water?
For example, we all know that water boils at 212 degrees F. It could then be said that the vapor pressure of water at 212 degrees Fahrenheit is 14.7 psi (atmospheric pressure, absolute scale.) At 70 degrees F, the vapor pressure of water is about 0.2 psi (absolute pressure.)