Science & Technology Flashcards
Ferrous is +____
Ferric is +____
Cuprous is +____
Cupric is +____
2
3
1
2
The atomic weight in grams of an element contains ______ atoms
6.02214 x 10^23
An anion is _____ charged
A cation is _____ charged
Negatively
Positively
A molecule is ______ bonded.
A chemically combined substance w more than one element is a ______
_____ compounds are not molecules but aggregates of +- particles
Chemically
Compound
Ionic
A radioisotope decays to background in _____ half lives
10
Inverse square law means _____.
The equation is…
At twice the distance, 1/4 exposure
Intensity=Source/(4•pi•r2)
I2=I1(d1^2/d2^2)
NRC exposure limits
Annual occupational \_\_\_\_\_ whole body
\_\_\_\_\_\_ lens of eye
\_\_\_\_\_\_ skin or extremities
General public \_\_\_\_\_\_5 rem (.05 Sv) 15 rem (.15 Sv) 50 rem (.50 Sv) 500 mrem/yr
To calculate vapor densities
______ / _______
MW vapor / MW air
MW air = 28.97
Flammable definitions
RCRA
DOT
OSHA
RCRA
DOT
Combustible 140F to 200F
Or also 100F to 140F if no other DOT hazards
OSHA
Combustible 100F to 200F
pH =
-log[H+]
What does acronym OILRIG stand for (as it relates to chemical reactions)
Oxidation is loss. Reduction is gain.
Of electrons
________ commonly end in -ides
Reducing agents
Oxidizing agents commonly start with ____ or end in _____
Per
ate
Convert mg/m3 to ppm
24.45 x mg/m3 / MW
Organic carboxylic acid
R-COOH
Weak acid
Very Corrosive to skin
