Is the volume of a gas equal to the volume of its container?
Because gases expand to fill their containers, it is safe to assume that the volume of a gas is equal to the volume of its container. The difference between the volume of a gas and the volume of the liquid or solid from which it forms can be illustrated with the following examples.
What has the same volume as the volume of a gas?
A modern statement is: Avogadro’s law states that “equal volumes of all gases, at the same temperature and pressure, have the same number of molecules.” For a given mass of an ideal gas, the volume and amount (moles) of the gas are directly proportional if the temperature and pressure are constant.
What is the relationship between number of particles and volume for a gas?
The number of molecules or atoms in a specific volume of ideal gas is independent of size or the gas’ molar mass. Avogadro’s Law is stated mathematically as follows: Vn=k V n = k , where V is the volume of the gas, n is the number of moles of the gas, and k is a proportionality constant.
Do gases change volume depending on their container?
Gases are unlike other states of matter in that a gas expands to fill the shape and volume of its container. For this reason, gases can also be compressed so that a relatively large amount of gas can be forced into a small container.
What does a container and a volume of gas create?
Pressure is also affected by the volume of the container. If the volume of a container is decreased, the gas molecules have less space in which to move around. As a result, they will strike the walls of the container more often, resulting in an increase in pressure. As a result, the pressure of the gas doubles
Why does a gas expand to fill its container?
Heating a gas increases the kinetic energy of the particles, causing the gas to expand. In order to keep the pressure constant, the volume of the container must be increased when a gas is heated. This law explains why it is an important safety rule that you should never heat a closed container
Does gas expand in volume?
Heat causes the molecules to move faster, (heat energy is converted to kinetic energy ) which means that the volume of a gas increases more than the volume of a solid or liquid. However, gases that are contained in a fixed volume cannot expand – and so increases in temperature result in increases in pressure.
Can gas be compressed into smaller volume?
In gases the particles are much further apart than in solids or liquids. Because the particles are moving about, a gas will fill any container that it is put into. Because there is space between the particles, they can be squashed into a smaller volume when the gas is compressed.
What happens when a large volume of gas is compressed to a smaller volume?
During compression, the volume (V) of a gas decreases. When this happens, the pressure (P) of the gas increases if the number of moles (n) of gas remains constant. If you keep the pressure constant, reducing the temperature (T) also causes the gas to compress
What is the relationship between volume and pressure?
The volume of a given amount of gas is inversely proportional to its pressure when temperature is held constant (Boyle’s law). Under the same conditions of temperature and pressure, equal volumes of all gases contain the same number of molecules (Avogadro’s law).
What happens if the volume of a gas is reduced?
Boyle’s law Because the volume has decreased, the particles will collide more frequently with the walls of the container. Each time they collide with the walls they exert a force on them. More collisions mean more force, so the pressure will increase. When the volume decreases, the pressure increases.
Why does pressure increase as a gas is compressed into a smaller volume?
Explain why pressure increases as a gas is compressed into a smaller volume? Pressure increases because there will be more gas molecules per unit volume. The number of collisions with the given unit of wall area in the container per unit time will increase as a result.
What is the relationship between volume and temperature?
Charles’s law states that the volume of a given amount of gas is directly proportional to its temperature on the kelvin scale when the pressure is held constant
Is the relationship between pressure and volume linear?
V is linear. Figure 6. The relationship between pressure and volume is inversely proportional. Graphically, this relationship is shown by the straight line that results when plotting the inverse of the pressure (1P) versus the volume (V), or the inverse of volume (1V) versus the pressure (V).
Why is the relationship between pressure and volume not linear?
Because there is so much empty space between gas molecules, it is easy to see why a gas is so compressible. As pressure is applied to the pump, the same number of gas molecules are squeezed into a smaller volume. The dependence of volume on pressure is not linear
How will the volume of the air bubble change?
Solution:- If we look at the given information then it is Boyle’s law as the temperature is constant and the volume changes inversely as the pressure changes. So, the volume of the air bubble at the surface will be 15 mL
How are pressure and volume related According to Boyle’s Law quizlet?
Boyle’s law because as the pressure of a fixed temperature of gas increases, the volume decreases, and as the pressure of a fixed temperature of gas decreases, the volume increases.
How are pressure and volume related According to Boyles Law?
For a fixed mass of an ideal gas kept at a fixed temperature, pressure and volume are inversely proportional. Or Boyle’s law is a gas law, stating that the pressure and volume of a gas have an inverse relationship. If volume increases, then pressure decreases and vice versa, when the temperature is held constant.
What is the relationship between volume and pressure in Boyle’s law?
This empirical relation, formulated by the physicist Robert Boyle in 1662, states that the pressure (p) of a given quantity of gas varies inversely with its volume (v) at constant temperature; i.e., in equation form, pv = k, a constant. ..
How does Boyle’s law relate to breathing quizlet?
Boyle’s Law: If a gas is kept at a constant temperature, pressure and volume are inversely proportional to one another (in a container). Our lungs are in an airtight chamber. An increase in volume will result in a negative pressure in the lungs with respect to atmospheric. Air will rush into the lungs.
How does ventilation relate to Boyle’s Law?
Ventilation is an active example of Boyle’s Law, which states that the pressure of a container of gas decreases as the volume of that container increases. Inspiration occurs when intrapulmonary pressure falls below atmospheric pressure, and air moves into the lungs
What is the significance of Henry’s law to the process of respiration?
What is the significance of Henry’s law to the process of respiration? Henry’s law states that, at a given temperature, the amount a particular gas that dissolves in a liquid is directly proportional to the partial pressure of the gas.
Which of the following best describes how Boyle’s law relates to the mechanics of breathing quizlet?
Which of the following best describes how Boyle’s law relates to the mechanics of breathing? If lung volume decreases, intrapleural pressure increases, forcing air into the lungs. If lung volume increases, intrapleural pressure increases, forcing air out of the lungs.
Why is normal exhalation passive quizlet?
Why is normal exhalation passive? Respiratory muscles are relaxing and elastic tissue in the lungs recoils.
Which muscles are activated during normal quiet inspiration?
The muscles that contribute to quiet breathing are the external intercostal muscles and the diaphragm. (The external and internal intercostals are the muscles that fill the gaps between the ribs.) When drawing breath (i.e., during inspiration), the external intercostal muscles and diaphragm contract simultaneously.
Which muscles are activated during forced expiration?
Which muscles are activated during forced expiration? During forced expiration, the internal intercostal muscles and the oblique, and transversus abdominal muscles contract to increase the intra-abdominal pressure and depress the rib cage.
What muscles are used in forced exhalation?
During forced exhalation, internal intercostal muscles which lower the rib cage and decrease thoracic volume while the abdominal muscles push up on the diaphragm which causes the thoracic cavity to contract.
What is the most powerful respiratory stimulant?
|What is the most powerful respiratory stimulant in a healthy person?||blood carbon dioxide level|
|Emphysema is distinguished by permanent shrinkage of the alveoli.||false|
|Atmospheric pressure is ___||760|
|Intrapulmonary pressure is pressure within the _____||alveoli|