Atmospheric pressure on Earth at its surface is 101 KPa (101 kilopascals or 101,000 N/m2). Which of these statements is true. If we pump out the gas in a closed container leaving only 1 billionth of the original gas, there will only be about 1000 atoms left in the container. The number of atoms or molecules in the container depends on what the gas is composed of. If we pump out the gas in a closed container leaving only 1 millionth of the original gas there will still be more than 1013 (10,000 billion) atoms per cm3 in the container. The number of atoms or molecules in the container does not depend on temperature.

Atmospheric pressure on Earth at its surface is 101 KPa (101 kilopascals or 101,000 N/m2). Which of these statements is true. If we pump out the gas in a closed container leaving only 1 billionth of the original gas, there will only be about 1000 atoms left in the container. The number of atoms or molecules in the container depends on what the gas is composed of. If we pump out the gas in a closed container leaving only 1 millionth of the original gas there will still be more than 1013 (10,000 billion) atoms per cm3 in the container. The number of atoms or molecules in the container does not depend on temperature.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter15: Fluids

Section: Chapter Questions

Problem 77PQ

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Atmospheric pressure on Earth at its surface is 101 KPa (101 kilopascals or 101,000 N/m2). Which of these statements is true? If we pump out the gas in a closed container leaving only 1 billionth of the original gas there will still be more than 1010 (10 billion) atoms per cm3 in the container. If we pump out the gas in a closed container leaving only 1 billionth of the original gas there will be fewer than 100 atoms per m3 in the container. When we reduce the pressure in the container while keeping the temperature constant, the number of atoms per m3 must stay constant. At 1 atmosphere, the number of atoms/m3 in air at room temperature is about 109, one billion atoms.
During the Viking landings on Mars, the atmospheric pressure was determined to be on the average about 6.50 millibars (1 bar = 0.987 atm). What is that pressure in torr and kPa?
A NASA spacecraft measures the rate R at which atmospheric pressure on Mars decreases with altitude. The result at a certain altitude is: R= 0.0915 kPa*km−1 Convert R to kJ*m−4 .
Which of the following is true for the situation below? p0 is the atmospheric pressure, ρ is the density of the mercury. pgas + ρg(0.06m) = p0 pgas = p0 + ρg(0.16m) pgas = p0 pgas + ρg(0.16m) = p0 pgas = p0 + ρg(0.10m) pgas = p0 + ρg(0.06m) pgas + ρg(0.10m) = p0
The density of air is 1.3 kg/m3 at sea level. From your knowledge of air pressure at ground level, estimate the height of the atmosphere. As a simplifying assumption, take the atmosphere to be of uniform density up to some height, after which the density rapidly falls to zero. (In reality, the density of the atmosphere decreases as we go up.) † 1 km 10 km 100 km 1000 km
A mercury barometer measures the pressure on the surface of the Earth. What would would determine how it would work and its reading on another planet, such as Mars? Pick those that apply. The density of the planet's atmosphere The extent of the planet's atmosphere above its surface The acceleration of gravity on the planet The temperature of the atmosphere.
. The average density of the material in intergalactic space is approximately 2.5 × 10–27 kg/m3. What is the volume of a lead sample, r = 11 300 kg/m3, that has the same mass as 8.0 × 1024 m3 of intergalactic space? A child wants to pump up a bicycle tire so that its pressure is 1.2 × 105 Pa above that of atmospheric pressure. If the child uses a pump with a circular piston with a surface area equal to 9.6 x 10-4 m2 what force must the child exert?
You are with an excursion party on an exploration of the surface of Mars. You find a small lake of water of that 1.76 m. Assume the density of the freshwater is unchanged on Mars. You measure the absolute pressure at the bottom of the lake to be one 161,800 Pa. What is the absolute pressure (in atm) at the surface of the lake. Assume the value of G on Mars is 3.72 m/s^2
Which law relates to the ideal gas law? A) P1T1 = P2T2 B) P1/V1 = P2/V2 C) P1V1 = P2V2 D) T1/V1 = T2/V2
In a commonly used model of the atmosphere, the atmospheric pressure varies with altitude, h, according to the barometric formula:p = p0e–h/Hwhere p0 is the pressure at sea level and H is a constant approximately equal to 8 km. More specifically, H = RT/Mg, where M is the average molar mass of air and T is the temperature at the altitude h. This formula represents the outcome of the competition between the potential energy of the molecules in the gravitational field of the Earth and the stirring effects of thermal motion. Derive this relation by showing that the change in pressure dp for an infinitesimal change in altitude dh where the mass density is ρ is dp = −ρgdh. Remember that ρ depends on the pressure. Evaluate (a) the pressure difference between the top and bottom of a laboratory vessel of height 15 cm, and (b) the external atmospheric pressure at a typical cruising altitude of an aircraft (11 km) when the pressure at ground level is 1.0 atm.
Under standard conditions, the density of air is 1.29 kg/m3. What is the mass of the air inside a room measuring 4.0 m × 3.0 m × 2.0 m?
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		If we pump out the gas in a closed container leaving only 1 billionth of the original gas, there will only be about 1000 atoms left in the container.
		The number of atoms or molecules in the container depends on what the gas is composed of.
		If we pump out the gas in a closed container leaving only 1 millionth of the original gas there will still be more than 10¹³ (10,000 billion) atoms per cm³ in the container.
		The number of atoms or molecules in the container does not depend on temperature.