Espectroscopia(s)

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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 heaviera 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
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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 lt 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  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
Laboratório 1
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Cómo medir densidades
Método Português-Espanhol
h
d
d
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Picnômetro
U 150.86 
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Picnômetro
H2O
mPMH2OMC
mPMH2OMC-ma
da Handbook
Substraindo ma da Va
Va VC
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Balança de Mohr-Westphal
U gtgt150.86 
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Balança de Mohr-Westphal
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2
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10
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Balança de Mohr-Westphal
2 div
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Balança de Mohr-Westphal
1
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d2
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Balança de Mohr-Westphal
-2 div
d1
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Balança de Mohr-Westphal