What are the units of measure used in industrial hygiene? I. ppm is the abbreviation for parts per million, expressed volumetrically and measured ...

What are the units of measure used in industrial hygiene?

I. ppm is the abbreviation for parts per million, expressed volumetrically and measured at 25ºC and 760 mm Hg.
II. mg/m3 is the abbreviation for milligrams per cubic meter, expressing concentration in gravimetric form.
III. m.p.p.c.f. is the abbreviation for millions of particles per cubic foot.
IV. dB is the abbreviation for decibel (measurement of acoustic pressure level).
V. lux is the abbreviation for the intensity of received illumination.
VI. µm is the abbreviation for micrometer, one millionth of a meter.
VII. µg is the abbreviation for microgram, one millionth of a gram.
VIII. µl is the abbreviation for microliter, one millionth of a liter.
IX. mg is the abbreviation for milligram.
X. m3 is the abbreviation for cubic meter.
XI. atm is the abbreviation for atmosphere, which is equal to 760 mm Hg.
XII. The conversion factor from mg/m3 to ppm is (TLV in ppm) x (Pm of the substance in grams) / 24.45.
XIII. The conversion factor from ppm to mg/m3 is (TLV in mg/m3) x (24.45) / (Pm of the substance in grams).
XIV. p.p.c.c. is the abbreviation for particles per cubic centimeter.
XV. The equation to convert TLV values from ppm to mg/m3 is (TLV in ppm) x (Pm of the substance in grams) / 24.45.
XVI. The equation to convert TLV values from mg/m3 to ppm is (TLV in mg/m3) x (24.45) / (Pm of the substance in grams).
a) I, II, III, IV, V, VI, VII, VIII, IX, X, XI, XII, XIII, XIV, XV and XVI are correct.
b) I, II, III, IV, V, VI, VII, VIII, IX, X, XI, XII, XIII, XIV and XV are correct.
c) I, II, III, IV, V, VI, VII, VIII, IX, X, XI, XII, XIII and XIV are correct.
d) I, II, III, IV, V, VI, VII, VIII, IX, X, XI, XII and XIII are correct.
e) I, II, III, IV, V, VI, VII, VIII, IX, X, XI and XII are correct.