Formulas Flashcards
What is the formula for “Power”?
Power=(Force*Distance)/Time
What is the formula Ohm’s Law? Note, express it two ways.
E=IR
Or
R=E/I
What is the formula for “Force”?
Force=Mass*Acceleration
How many Watts equals 1 horsepower?
745.7 Watts=1HP
What does “Approved for Hazardous Location” mean?
Equipment must be approved for the class, division, and group of location.
What is “homeostasis”?
Homeostasis is a state of physiological equilibrium produced by a balance of functions and chemical composition within an organism.
What is the volume that one mole of an ideal gas or vapor occupies at 0 degrees Celsius?
22.4 liters.
What is a curie?
A curie is the amount of any radioactive isotope that will produce 3.7x10 to the 10th power of nuclear disintegrations.
What electromagnetic radiation has the shortest wavelength?
Gamma rays.
What is the atomic energy level rule?
Energy Level=2*(the ring number squared)
1 g-mole of an ideal gas at 0 degrees Celsius and 760 mm Hg occupies:
22.4 liters
The molar volume of an ideal gas at STP is how many liters?
22.4 liters
Standard Temperature and Pressure (STP) is what?
0 degrees Celsius and 1 atmosphere
What is the gas constant when using liter-mm Hg/g-mol-K?
62.4
What is the formula for the Ideal Gas Law?
.
PV=nRT P=Pressure V=Volume n=number of mass-moles of gas R=the appropriate gas constant T=Temperature
What is “critical pressure”?
The critical pressure of a substance is that pressure at which no liquid-phase transition occurs for any temperature.
To determine the kinetic energy of a rotating body, what is the appropriate formula?
E=1/2 I w^2
The two most common techniques employed for the control of bio agents are:
Disinfection and sterilization
Byssinosis is an occupational disease related to the exposure of :
Cotton fiber dust
The products produced when water is electrolyzed are:
H2 and O2
The particle whose mass is closest to that of an electron is:
Positron
Atoms of an element with different atomic weights are called:
Isotopes
The atomic number refers to:
The number of protons
What is the density of water?
8.33 pounds per gallon
One mole of a gas at STP occupies how many liters?
22.4 liters.
When using STP, and atmospheres, “R”, the constant, equals what?
.0821
What is the formula for determining Ppm?
(mg/M^3*24.45)/MW
“(Micrograms per cubic meter times 24.45) divided by molecular weight”
What is the conversion formula for Fahrenheit to Celsius?
Celsius = Degrees Fahrenheit - 32 / 1.8000
How many grams per ounce?
28.35 grams per ounce.
How many micrograms per gram?
1,000 micrograms per gram.
How many liters per cubic foot?
28.317 liters per cubic foot.
What law describes the equilibrium between molecules of gas in the atmosphere and molecules of the same gas in solution?
Henry’s Law.
What is the “octanol-water partition coefficient sometimes used for?
To approximate the degree to which a chemical, when released, will tend to migrate (i.e. “partition”) between soil and water.
What does “Kow” stand for?
The octanol-water partition coefficient
What does “Koc” stand for?
The soil-sorption coefficient.
What does “Fick’s Law” describe?
Fick’s Law of diffusion describes the relationship between molecular weight, diffusion co-efficient, and the rate of diffusion.
What does Henry’s Law cover?
Henry’s Law covers solubilities of gases in water.
What does “Beer’s Law” cover?
Beer’s Law covers the absorption of EM radiation and its relation to concentration.
What does “Boyle’s Law” address?
Boyle’s Law addresses the relationship of pressure and volume at constant temperature.
Which of the following is not an organic compound? A. Alkanes B. Alkenes C. Carboxylic acids D. Carbon Dioxide
Carbon dioxide since it is an oxidized form of carbon.
Toxic effects can be broken down into what four major classifications?
Acute, chronic, narcosis, discomfort
One horsepower equals how many foot-pounds?
550 ft lbs
One horsepower equals how many watts?
745.7 Watts or 746 Watts
What is a formula for “power”?
Power = Force*Distance/Time
Approved for hazardous location means what?
Equipment must be approved for the class, division, and group of location.
What is the formula for Force with regard to determining mechanical advantage?
F=W/MA
F(work) = W(weight)/MA(mechanical advantage)
What is the conversion factor for Celsius to Fahrenheit?
Fahrenheit = 1.8 * (degrees Celsius) + 32
What is the conversion from Fahrenheit to Celsius?
Celsius = .556 (Degrees Fahrenheit - 32)
What is the formula for kinetic energy?
KE = .5 * m * v^2
What is Critical Pressure?
The critical pressure of a substance is the pressure required to liquify a gas at its critical temperature.
What is critical temperature?
The critical temperature of a substance is the temperature at and above which vapor of the substance cannot be liquified, no matter how much pressure is applied.
