Respuesta :
1) Answer is: gas pressure.
The pressure of a gas is the force that the gas exerts on the walls of its closed container.
More collisions of helium atoms with the walls of a closed container, higher the pressure.
Presure also depands on number of helium atoms, temperature and volume of container.
Manometer is a device to measure pressures.
2) Answer is: all of the above.
Boyle's Law: the pressure volume law - volume of a given amount of gas held varies inversely with the applied pressure when the temperature and mass are constant.
When volume goes up, pressure goes down.
Gay-Lussac's Law: the pressure of a given amount of gas held at constant volume is directly proportional to the Kelvin temperature.
As the temperature goes up, the pressure also goes up and vice-versa.
3) Answer is: It will increase.
According to ideal gas law, more gas particles, higher pressure.
An ideal gas is:
1) made up of molecules which are in constant random motion in straight lines. Ā
2) all collisions are perfectly elastic, there is no loss of kinetic energy during the collision.
3) follows ideal gas law: pĀ·V = nĀ·RĀ·T.
4) the gas particles have negligible volume.
4) Answer is: Charles' Law.
Charles' Law (The Temperature-Volume Law) - the volume of a given amount of gas held at constant pressure is directly proportional to the Kelvin temperature: Ā
Vā/Tā = Vā/Tā. Ā
When temperature goes up, the volume also goes up. Ā
For example:
Vā(gas) = 2240.0 L; initial volume.
Tā(gas) = 373 K; initial temperature.
Tā(gas) = 273 K; final temperature.
Vā(gas) = ?
2240 L/373 K = Vā/273 K.
Vā = 1639.46 L.
5) Answer is: 140 kilopascals.
Boyle's Law (the pressure volume law): volume of a given amount of gas held at constant temperature varies inversely with the applied pressure when the temperature and mass are constant. Ā
pāVā = pāVā (the product of the initial volume and pressure is equal to the product of the volume and pressure after a change).
70 kPa Ā· 8.0 L = pā Ā· 4.0 L. Ā
pā = 70 kPa Ā· 8.0 L / 4.0 L. Ā
pā = 140 kPa.
When pressure goes up, volume goes down. Ā
When volume goes up, pressure goes down. Ā
1) The pressure of a gas is due to collision of gas particles with the wall of container. Thus
Collisions of helium atoms with the walls of a closed container cause gas pressure
2) The pressure is related to
a) volume : inversely proportional [as explained by Boyel's law]
b) Temperature
c) number of particles
Thus answer is all of the above
3) The ideal gas equation is
PV = nRT
Where
P = Pressure of gas
V = volume of gas
n = moles of gas
T = temperature
R = gas constant
Now as we are keeping T and V constant and increasing the number of molecules it will increase the pressure
Answer: It will increase
4) Charle's Law : at constant pressure and constant number of molecules the volume of a gas is directly proportional to its temperature.
