Constants

Question 1

Ideal Gas Constant (SI)

Answer 1

0.08205 L-atm/mol-K
8.314 m^3-Pa/mol-K

Question 2

Ideas Gas Constant (Eng)

Answer 2

10.73 ft^3-psi/lbmol-R
0.7302 ft^3-atm/lbmol-R

Question 3

Water density

Answer 3

1000 kg/m^3
62.4 lb/ft^3

Question 4

Water density @ 20degC

Answer 4

998 kg/m^3
62.3 lb/ft^3

Question 5

Water viscosity @ 20degC

Answer 5

1 cP

Question 6

Cp,water

Answer 6

4.184 kJ/kg-K
1 cal/g-degC

Question 7

Cp,steam

Answer 7

1.88 kJ/kg-K
0.45 Btu/lb-degF

Question 8

ΔHvap,water @ 100degC

Answer 8

540 cal/g H2O

Question 9

ΔHfus,water @ 0degC

Answer 9

80 cal/g H2O

Question 10

Kf & Kb water

Answer 10

1.86 K/m
0.51 K/m

Question 11

Kf & Kb ethanol

Answer 11

2.0 K/m
1.2 K/m

Question 12

Kf & Kb acetic acid

Answer 12

3.90 K/m
3.07 K/m

Question 13

Kf & Kb benzene

Answer 13

5.12 K/m
2.57 K/m

Question 14

Kb methanol

Answer 14

0.8 K/m

Question 15

Na2SO4-H2O Solubility @ 300 K (30 degC)

Answer 15

40.8 kg/ 100 kg water

Question 16

Na2SO4-H2O Solubility @ 290 K (15degC)

Answer 16

14.2 kg/ 100 kg water

Question 17

thermal conductivity (k) of steel

Answer 17

45 W/m-K

Question 18

Ka of phenolphthalein

Answer 18

4.00E-10
3.16E-10

Question 19

Electron charge

Answer 19

1.60 E-19 C
[CONST 23]

Question 20

Proton charge

Answer 20

1.60 E-19 C
[CONST 23]

Question 21

Octane C8H18 density

Answer 21

0.6918 g/mL

Question 22

Heptane C7H16 density

Answer 22

0.684 g/mL

Question 23

Cetane C16H34 density

Answer 23

0.7751 g/mL

Question 24

methyl naphthalene C11H10 density

Answer 24

1.025 g/mL

Question 25

Saturated Dissolved Oxygen (DOs) in mg/L

Answer 25

@ 10 degC = 11.33
@ 20 deg C = 9.1
@ 25 deg C = 8.38

Question 26

Water Hardness (mg/L as CaCO3)
Soft

Answer 26

<17.61

Question 27

Water Hardness (mg/L as CaCO3)
Slightly Hard

Answer 27

17.61 - 60

Question 28

Water Hardness (mg/L as CaCO3)
Moderately Hard

Answer 28

60 - 120

Question 29

Water Hardness (mg/L as CaCO3)
Hard

Answer 29

120 - 180

Question 30

Water Hardness (mg/L as CaCO3)
Very Hard

Answer 30

> 180

Question 31

proton mass (mp)

Answer 31

[CONST 01]

Question 32

neutron mass (mn)

Answer 32

[CONST 02]

Question 33

electron mass (me)

Answer 33

[CONST 03]

Question 34

Planck constant (h)

Answer 34

[CONST 06]
6.626 E-34 J-s

Question 35

Rydberg constant (R∞)

Answer 35

[CONST 16]

Question 36

atomic mass unit (u)

Answer 36

[CONST 17]
1.6605 E-27 kg

Question 37

Faraday constant (F)

Answer 37

[CONST 22]
96,485 C/mol

Question 38

Avogadro constant (NA)

Answer 38

[CONST 24]
6.022 E-23 /mol

Question 39

Boltzmann constant (k)

Answer 39

[CONST 25]
1.38 E-23 J/K

Question 40

molar volume of ideal gas (Vm) @ 273.15 K, 100 kPa

Answer 40

[CONST 26]
in m^3

Question 41

speed of light in vacuum (C0)

Answer 41

[CONST 28]
2.99 E+08 m/s

Question 42

first radiation constant (C1)

Answer 42

[CONST 29]
3.74 E-16 W-m^2

Question 43

second radiation constant (C2)

Answer 43

[CONST 30]
1.44 E-02 m-K

Question 44

Stefan-Boltzmann constant (σ)

Answer 44

[CONST 31]
5.67 E-08 W/(m^2-K^4)
0.173 E-08 Btu/(h-ft^2-R^4)

Question 45

electric constant (ε0)

Answer 45

[CONST 32]
8.85 E-12 F/m

Question 46

magnetic constant (μ0)

Answer 46

[CONST 33]
1.2566 E-06 H/m

Question 47

Newtonian constant of Gravitation (G)

Answer 47

[CONST 39]
6.67 E-11 m^3 /kg-s^2

Question 48

STP: Standard Temperature and Pressure

Answer 48

0 degC (273.15 K) and 1 bar

Question 49

NTP: Normal Temperature and Pressure

Answer 49

20 degC (293.15 K) and 1 atm