Quiz 1 Flashcards
Equation for Pressure
Pressure = Force/Area
Gauge Pressure
P.total = P.gauge + P.atm
What does higher elevation do to the needs of gas
There is less gas availability
Equation for Work
W = Force x Distance
Law stating energy cannot be created or destroyed
Law of conservation of energy
an older unit of energy that is still used in chemistry
calorie
The food Calorie is what and what
1000 calories
or
kilocalerie
Law that states A/B are same temps, B/C are same temps therefore A/C must be same temp
Zeroth Law of thermodynamics
When energy flows into the system
Endothermic (Q > 0)
When energy flows out of the system
Exothermic (Q < 0)
When energy is transferred to an object from a higher temp body + work done on object equals?
Change in internal energy
First law of thermodynamics
Change in internal energy
When heat spontaneously flows from a hot body to a cold body when in thermal contact
Second law of thermodynamics
What law of physics is a warm blanket on a patient?
Second law of thermodynamics
Law stating it is not possible to lower a temperature of an object to absolute zero
Third law of thermodynamcis
What is a process not a product
Heat
what is an energy that can be transferred
Heat
The amount of heat needed to raise the temp of 1g of an object 1 degree C
Specific Heat
Mass x specific heat
Heat Capacity
Factors that affect the rate of change of heat of an object (4)
- Heat Capacity
- Temp Gradient
- Surface Area
- Forced Convection
Heat transfer of 40%
Radiation
Heat transfer of 30%
convection
Heat transfer of 20%
conduction
Heat transfer of 10%
Evaporation
Heat transfer by the movement of liquid or gas
Convection
Heat transfer by direct contact of molecules in a higher temp with molecules in a lower temp
Conduction
Heat transfer by energy emitted from an object
Radiation
Heat loss through respiration
Evaporation
what law states the greater the radius, the greater the surface tension of a cylinder?
Laplaces Law
increasing the radius of a sphere does what to surface tension, and what law?
Decreases surface tension
LaPlaces Law
if the temperature of a liquid increases, what does that do to the vapor pressure?
Also increases
What is it called when there is a state of balance b/w vaporization and condensation?
Dynamic equilibrium
The tendency of a liquid to evaporate
Volatility
Does a liquid with a High volatility have a higher or lower vapor pressure?
Higher
Does a liquid with a High volatility have a higher or lower boiling point?
Lower
What does the Aline utilize as a principle?
Pascals Principle
The pressure applied to a confined fluid increases the pressure throughout the fluid by the same amount
Pascals Principle
The rate of change of velocity
Acceleration
Law states that the pressure of a fluid varies inversely with speed, an increase in speed producing a decrease in pressure and vice versa
Bernoulli’s Law
The faster a fluid flows, the less pressure it exerts (Principle)
Bernoulli’s principle
Measure of fluid’s resistance to flow
Viscosity
determined that the laminar flow rate of an incompressible fluid along a pipe is proportional to the fourth power of the pipe’s radius
Poiseulle’s Law
The flow rate for a fluid through a tube depends on:
- Radius
- Length
- Pressure difference
- Viscosity
Prediction of when flow will become turbulent
Reynold’s Number
Reynolds number is inversely proportionate to:
Viscosity
Vapor pressure of desflurane
669 mmHg
Vapor pressure of Sevoflurane
157 mmHg
Vapor pressure of Isoflurane
239 mmHg
The energy required to push electrons through a material
Resistance
Ohms law equation
V = IR (Electrical potential = Current x resistance)
