O que é Densidade. SubstanceDensity in kg/m 3 Iridium22,650 Osmium22,610 Platinum21,450 Gold19,300...
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Transcript of O que é Densidade. SubstanceDensity in kg/m 3 Iridium22,650 Osmium22,610 Platinum21,450 Gold19,300...
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O que é Densidade
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Substance Density in kg/m3
Iridium 22,650
Osmium 22,610
Platinum 21,450
Gold 19,300
Uranium 19,050
Mercury 13,580
Gasoline 730
Palladium 12,023
Lead 11,340
Silver 10,490
Copper 8,920
Iron 7,870
Tin 7,310
Titanium 4,507
Diamond 3,500
Aluminium 2,700
Magnesium 1,740
Seawater 1,025
Water 1,000
Ethyl alcohol 790
The densest naturally occurring substance on Earth is Iridium, at about is 22,650 kg/m3.
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Mini-quiz
1. Why is the density of water equal to 1?• It just happened to equal 1• Because there is more water than other materials• The size of the units were defined so it would equal 1
2. Which is heavier—a pound of steel or a pound of coffee?• Steel is always heavier than coffee• They both weigh a pound • Sometimes freeze-dried coffee is heavier
3. Why is the density of lead the same on the Moon as it is on Earth?• Density relates to the mass, not the weight. • Lead will melt on the Moon• The Moon has less gravity than the Earth
The Web address of this page is www.school-for-champions.com/science/density.htm. Please include it as a
reference in your report, document, or thesis.
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Medição de Densidades
V
m
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Berthold Industrial Systems
In Line Density Meter LB 379
The Compelling Advantages •Non-contacting, continuous measurement - no contact with medium being measured •Minimum radiation exposure (dose rate < 1 µSv/h at 10 cm from surface) •241Am radiation source in ultrasafe capsule with long half-life (433 years) ]•Complete stainless steel construction of measuring section •Simple installation in existing pipelines •High statistical accuracy and long-term stability by the use of a highly sensitive scintillation counter with patented drift compensation •Ideal for food industry applications •Calibration and measurement output directly in measured variables (g/cm3, %, °Bx, °Be, g/l) •Very simple calibration by microprocessor controlled amplifier
The Principle of Measurement Density Measurement is based on the absorption of Gamma radiation as it passes through the process material. Absorption is proportional to changes in material density, and as the measuring path is held constant, this indicates product density.
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Mercury Pycnometer Product Resources
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Micro Density Meters
Model 102B - Smallest Sample Volume Requirements in the World!The ISSYS Micro Density Meter, Model 102B will accurately measure fluid density or specific gravity over a programmable temperature range of 0ºC to 90ºC. Because microfluidic tubes are used, only 1 microliter of fluid is required to perform the measurement. This ultimately saves system weight. While the competition's temperature controlled density meter weighs up to 28kg (60 lbs), the ISSYS Micro Density Meter weighs only 1 kg (2.2lbs). It's an instrument grade (5-digits of resolution) density meter that can be literally held in your hand. If you have to carry an accurate, temperature controlled density meter anywhere, you'll want to take the Micro Density Meter.
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Medição de Densidades
V
m
Laboratório #1Laboratório #1
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Método Português-Espanhol
h
dd
V
m
Cómo medir densidades
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Picnômetro
U$ 150.86
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Picnômetro
H2O
mP+MH2O+MC mP+MH2O+MC-ma
V
m
Vm .
Substraindo ma = δa Va
δa = Handbook
Va= VC
a
C
C
CC V
m
V
m
aa
C
a
CC m
m
V
mou
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Balança de Mohr-Westphal
U$ >>150.86
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11 22 33 44 55 66 77 88 99 1010
m = 1
m = 10
m = 100
Balança de Mohr-Westphal
I = 1 u.a.
I = 10 u.a.
I = 100 u.a
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2 div2 div
11 22 33 44 55 66 77 88 99 1010
Balança de Mohr-Westphal
auMgI .1
mau
divI sens ..
2
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11 22 33 44 55 66 77 88 99 1010
d2
Balança de Mohr-Westphal
VggMI LLe
mauXXXIw ..
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11 22 33 44 55 66 77 88 99 1010
d1
-2 div-2 div
Balança de Mohr-Westphal
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Balança de Mohr-Westphal
VgMgI V
m
PPI
I
PP
II