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What general information would you need to answer what would be the pressure in mm Hg if this gas was allowed to expand to 975 ml at a constant temperature?
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When does raising the temperature of a gas increase its preasure?
This is the Gay-Lussac law: at constant volume of a gas the temperature increase when the pressure increase.
What is its final volume of A gas occupying a volume of 594 mL at a pressure of 0.970 ATM is allowed to expand at constant temperature until its pressure reaches 0.541 ATM?
Apply Boyle's law. PV=constant P1V1=P2V2 594 ml x 0.970 atm = V x 0.541 atm Re arrange to find the new volume.
What happens to temperature and number particles as the volume increases?
Although it isn't always accurate - especially at high pressures - the ideal gas law is a good, simple way of looking at the general relationship between pressure, volume, temperature and total number of particles in a gas. According to the Ideal Gas Law: PV = nRT where P is pressure, V is volume, n is the number of particles, R is the ideal gas constant , and T is absolute temperature. If the system is closed, then by definition the number of particles remains the same even if volume changes. If the system is NOT closed, then the question is not sufficiently constrained to predict what will happen to the number of particles. Assuming a closed system, if the volume increases then either the pressure must decrease or the temperature increase (or both). If pressure is held constant, the temperature must increase to keep the pressure stable. If the pressure is allowed to fall, the temperature may actually remain the same. If the process is adiabatic, both the pressure and the temperature will decrease (for most gases - hydrogen and helium have a range where they actually heat up as they expand)
If pressure is applied to a confined volume of gas the temperature of that gas will increase. Will that in effect negate Boyle's law?
By "confined" it is assumed that no heat exchange is allowed. This is sometimes called an "adiabatic" change. P V = R T still applies, but since the temperature changes, P x V is no longer constant. The relation for adiabatic changes is often expressed as P x V^gamma = constant, where gamma is is a constant and the ^ sign means "raised to the power". Using algebra these 2 equations can be combined to eliminate one of the variables P or V, to give relationships between V and T, or between P and T. "Negate" is too strong a word here. Boyle's law refers to constant temperature, so it cannot be used when the temperature changes. When you compress a gas at constant temperature, heat passes out. If it is thermally isolated the heat is retained and shows up as a rise in temperature.
It is right temperature raise pressure also raise?
If you're asking about gases... Yes. If you increase the temperature without allowing the volume to change, the pressure will in fact go up as well. (If the volume is allowed to change, it's impossible to say what happens to the pressure without additional details.)
How is isothermal possible in a balloon?
Isothermal is where pressure and/or volume changes, but temperature remains constant. Pressure, Volume, and Temperature are related as: PV = nRT =NkT for an ideal gas. Here, we see that since a balloon's volume is allowed to change, its pressure remains relatively constant. Whenever there is a pressure change, it'll be offset by an equivalent change in volume, thus temperature is constant.
When does raising the temperature of a gas increase its preasure?
This is the Gay-Lussac law: at constant volume of a gas the temperature increase when the pressure increase.
A gas with a volume of 4.00 L at a pressure of 205 kPa is allowed to expand to a volume of 12.0 L. What is the pressure in the container if the temperature remains constant?
The pressure is 68,3 kPa.
What would be the pressure in mm Hg if this gas was allowed to expand to 975 ml at a constant temperature?
This cannot be answered without an initial volume or pressure. But the final pressure of an expansion of a gas can be determined by the following formula. PV/T = P'V'/T' where P = pressure absolute V = volume T = temperature absolute ( ' ) indicates the new pressure, volume and temperature because the temperature is constant this can be reduced to PV = P'V' or P' = PV/V'
What is a factor held constant?
In science, as in real life sometimes several 'factors' effect the outcome of an experiment. In order to make the problem easier to study one or more of these is 'held constant' or not allowed to change in order to see the effect of the other variables. EX. Gas volume can be effected by both pressure and temperature. In order to understand the effect of pressure, Boyle kept the temperature constant. He then changed the pressure to see what happened to the volume of a gas. This gave him what is now called Boyle's Law: The volume of a gas varies inversely as the pressure when the temperature is held constant.
What factor is held constant?
In science, as in real life sometimes several 'factors' effect the outcome of an experiment. In order to make the problem easier to study one or more of these is 'held constant' or not allowed to change in order to see the effect of the other variables. EX. Gas volume can be effected by both pressure and temperature. In order to understand the effect of pressure, Boyle kept the temperature constant. He then changed the pressure to see what happened to the volume of a gas. This gave him what is now called Boyle's Law: The volume of a gas varies inversely as the pressure when the temperature is held constant.
What change in volume would cause the pressure of an enclosed gas to be reduced toone quarter of its original value?
This is the reduction of volume to one-third.
When the temperature is constant gas volume will decrease as the pressure decreases is that true?
If I remember correctly it is a little more complicated than that. The general equation PV=nRT for an ideal gas is elementary knowledge. The fact is that when you increase temperature many things can happen. It depends on how you treat your system. In general if you increase temperature in an open system the pressure will remain fairly constant, but the volume will increase. If it is a closed system in which the volume is not allowed to expand the pressure will increase with increased temperature. You also have to remember chemical properties also such as phase changes. Hope that rambling mess helps lol.
What is its final volume of A gas occupying a volume of 594 mL at a pressure of 0.970 ATM is allowed to expand at constant temperature until its pressure reaches 0.541 ATM?
Apply Boyle's law. PV=constant P1V1=P2V2 594 ml x 0.970 atm = V x 0.541 atm Re arrange to find the new volume.
If the volume of a scuba tank filled with air remains constant and its temperature decreases what happens to its pressure?
It doesn't change- Apex
What happens to temperature and number particles as the volume increases?
Although it isn't always accurate - especially at high pressures - the ideal gas law is a good, simple way of looking at the general relationship between pressure, volume, temperature and total number of particles in a gas. According to the Ideal Gas Law: PV = nRT where P is pressure, V is volume, n is the number of particles, R is the ideal gas constant , and T is absolute temperature. If the system is closed, then by definition the number of particles remains the same even if volume changes. If the system is NOT closed, then the question is not sufficiently constrained to predict what will happen to the number of particles. Assuming a closed system, if the volume increases then either the pressure must decrease or the temperature increase (or both). If pressure is held constant, the temperature must increase to keep the pressure stable. If the pressure is allowed to fall, the temperature may actually remain the same. If the process is adiabatic, both the pressure and the temperature will decrease (for most gases - hydrogen and helium have a range where they actually heat up as they expand)
How did cell phones change communication in the early 1990's?
Cell phones allowed people to be in constant contact.
