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Water properties
Water Density (kg/m
3 ) at Different Temperatures (°C)
Temperature
Density
0
999.8395
4
999.9720 (density maximum)
10
999.7026
15
999.1026
20
998.2071
22
997.7735
25
997.0479
30
995.6502
40
992.2
60
983.2
80
971.8
100
958.4
Water Vapor Pressure at Different Temperatures (°C)
Temperature
Vapor Pressure (torr)
Vapor Pressure (Pa)
0
4.6
613.2812
4
6.1
813.2642
10
9.2
1226.562
15
12.8
1706.522
20
17.5
2333.135
22
19.8
2639.776
25
23.8
3173.064
30
31.8
4239.64
35
42.2
5626.188
40
55.3
7372.707
45
71.9
9585.852
50
92.5
12332.29
55
118.0
15732
60
149.4
19918.31
65
187.5
24997.88
70
233.7
31157.35
75
289.1
38543.39
80
355.1
47342.64
85
433.6
57808.42
90
525.8
70100.71
95
633.9
84512.82
100
760.0
101324.7
Water K
w and pK
w at Different Temperatures (°C)
Temperature
K
w 10
–14
pK
w
0
0.112
14.95
5
0.182
14.74
10
0.288
14.54
15
0.465
14.33
20
0.671
14.17
25
0.991
14.00
30
1.432
13.84
35
2.042
13.69
40
2.851
13.55
45
3.917
13.41
50
5.297
13.28
55
7.080
13.15
60
9.311
13.03
75
19.95
12.70
100
56.23
12.25
Specific Heat Capacity for Water
C°(H
2 O(
l )) = 4184 J∙K
−1 ∙kg
−1 = 4.184 J∙g
-1 ∙°C
-1
C°(H
2 O(
s )) = 1864 J∙K
−1 ∙kg
−1
C°(H
2 O(
g )) = 2093 J∙K
−1 ∙kg
−1
Standard Water Melting and Boiling Temperatures and Enthalpies of the Transitions
Temperature (K)
Δ
H (kJ/mol)
melting
273.15
6.088
boiling
373.15
40.656 (44.016 at 298 K)
Water Cryoscopic (Freezing Point Depression) and Ebullioscopic (Boiling Point Elevation) Constants
K
f = 1.86°C∙kg∙mol
−1 (cryoscopic constant)
K
b = 0.51°C∙kg∙mol
−1 (ebullioscopic constant)
Water full-range spectral absorption curve. This curve shows the full-range spectral absorption for water. The
y -axis signifies the absorption in 1/cm. If we divide 1 by this value, we will obtain the length of the path (in cm) after which the intensity of a light beam passing through water decays by a factor of the base of the natural logarithm e (e = 2.718281828).
Questions & Answers
how does Neisseria cause meningitis
is the branch of biology that deals with the study of microorganisms.
studies of microbes
Louisiaste
when we takee the specimen which lumbar,spin,
How bacteria create energy to survive?
Bacteria doesn't produce energy they are dependent upon their substrate in case of lack of nutrients they are able to make spores which helps them to sustain in harsh environments
_Adnan
But not all bacteria make spores, l mean Eukaryotic cells have Mitochondria which acts as powerhouse for them, since bacteria don't have it, what is the substitution for it?
Muhamad
they make spores
Louisiaste
what is sporadic nd endemic, epidemic
the significance of food webs for disease transmission
Abreham
food webs brings about an infection as an individual depends on number of diseased foods or carriers dully.
Mark
explain assimilatory nitrate reduction
Assimilatory nitrate reduction is a process that occurs in some microorganisms, such as bacteria and archaea, in which nitrate (NO3-) is reduced to nitrite (NO2-), and then further reduced to ammonia (NH3).
Elkana
This process is called assimilatory nitrate reduction because the nitrogen that is produced is incorporated in the cells of microorganisms where it can be used in the synthesis of amino acids and other nitrogen products
Elkana
Examples of thermophilic organisms
Give Examples of thermophilic organisms
Shu
advantages of normal Flora to the host
Prevent foreign microbes to the host
Abubakar
they provide healthier benefits to their hosts
ayesha
They are friends to host only when Host immune system is strong and become enemies when the host immune system is weakened . very bad relationship!
Mark
cell is the smallest unit of life
Fauziya
cell is the smallest unit of life
Akanni
cell is the structural and functional unit of life
Hasan
is the fundamental units of Life
Musa
what are emergency diseases
There are nothing like emergency disease but there are some common medical emergency which can occur simultaneously like Bleeding,heart attack,Breathing difficulties,severe pain heart stock.Hope you will get my point .Have a nice day ❣️
_Adnan
define infection ,prevention and control
Innocent
I think infection prevention and control is the avoidance of all things we do that gives out break of infections and promotion of health practices that promote life
Lubega
Heyy Lubega hussein where are u from?
_Adnan
which site have a normal flora
Many sites of the body have it
Skin
Nasal cavity
Oral cavity
Gastro intestinal tract
Safaa
skin,Oral,Nasal,GIt
Sadik
How can Commensal can Bacteria change into pathogen?
Sadik
How can Commensal Bacteria change into pathogen?
Sadik
what are the advantages of normal Flora to the host
Micheal
what are the ways of control and prevention of nosocomial infection in the hospital
Micheal
part of a tissue or an organ being wounded or bruised.
Wilfred
what term is used to name and classify microorganisms?
Binomial nomenclature
adeolu
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Source:
OpenStax, Chemistry. OpenStax CNX. May 20, 2015 Download for free at http://legacy.cnx.org/content/col11760/1.9
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