process variable part 1

Question 1

fundamental unit of the amount of substance

Answer 1

mole

Question 2

exact elementary entities of the mole of the amount of substance

Answer 2

6.02214076 x 10^23

Question 3

Avogadro’s number fixed value

Answer 3

6.02214076 x 10^23 is equal to 1 mol

Question 4

different types of mole

Answer 4

• gram mole
• pound mole
• kilogram mole

Question 5

type of mole that is the same with the conventional mole

Answer 5

gram mole

Question 6

type of mole that is equivalent to the imperial system of the mole

Answer 6

pound mole

Question 8

= 1000 g mol = 1000 mol

Answer 8

1 kg mol

Question 9

refers to the mass of a single molecule of a substance, expressed in atomic mass units (amu or u)

Answer 9

molecular weight

Question 10

molecular weight is also known as

Answer 10

molecular mass

Question 11

formula for molecular weight

Answer 11

MW = mass/mole

Question 12

relationship of molecular weight and mole

Answer 12

• g mole = mass in g/MW
• lb mol = mass in lb/MW

Question 13

ratio of mass per unit volume

Answer 13

density

Question 14

formula for density

Answer 14

p = density = mass/volume = m/V

Question 15

inverse of density

Answer 15

specific volume (V = p^-1)

Question 16

the ratio of density of the substance to the density of the reference material

Answer 16

specific gravity

Question 17

specific gravity formula

Answer 17

sp. gr. of A = Pa/Pref

Question 18

the rate at which material is transported through a carrying pipe

Answer 18

flow rate

Question 19

different types of flow rates

Answer 19

• mass flow rate
• molar flow rate
• volumetric flow rate

Question 20

mass transported through a pipe per unit of time

Answer 20

mass flow rate (m with a dot above it)

Question 21

moles of a substance transported through a pipe per unit time

Answer 21

molar flow rate (n with a dot above it)

Question 22

the volume transported through a pipe per unit time

Answer 22

volumetric flow rate (F)

Question 23

the number of moles of a particular substance in a mixture or solution divided by the total number of moles present in the mixture or solution

Answer 23

mole fraction

Question 24

mole fraction fomula

Answer 24

mole fraction = moles of A/total moles

Question 25

also known as a weight fraction; mass of the substance divided by the total mass of all the substance present in the mixture or solution

Answer 25

mass fraction

Question 26

mass fraction formula

Answer 26

Y = mass of A/total mass

Question 27

rule in conversion from mass fraction to mole fraction and vice versa

Answer 27

need to use molecular weight to convert from one term to another

Question 28

amount of a component (solute) in a mixture divided by the total of the mixture

Answer 28

concentration

Question 29

examples of concentration

Answer 29

density, mass fraction, and mole fraction

Question 30

moles of compounds per unit volume

Answer 30

molar density

Question 31

method of expressing very dilute solutions

Answer 31

parts per million or billion

Question 32

formula for ppm and ppb

Answer 32

ppm = mass/total mass x 10^6 ppb = mass/total mass x 10^9

Question 33

what is the formula of ppm and ppb in aqueous solution

Answer 33

ppm = 1 mg solute/L solution ppb = 1 microgram solute/L solution

Question 34

ppm and ppb are rarely used in terms of ________

Answer 34

volume as it is only used for gases