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Praxis 5435 Exam with Complete Solutions

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Praxis 5435 Exam with Complete Solutions Volumetric Flask Correct answer-used for making liquid solutions of precise volumes, bulb shaped with narrow tube Erlenmeyer flask Correct answer-Used for mixing, transporting, and reacting Burette Correct answer-a graduated glass tube with a tap at one...

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  • August 8, 2024
  • 60
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • praxis 5435 exam with complete solutions
  • volumetric flask correct answer used for making li

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Praxis 5435 Exam with Complete Solutions
Volumetric Flask Correct answer-used for making liquid solutions of precise volumes,
bulb shaped with narrow tube




Erlenmeyer flask Correct answer-Used for mixing, transporting, and reacting




Burette Correct answer-a graduated glass tube with a tap at one end, for delivering
known volumes of a liquid, especially in titrations.




Titration Correct answer-a measured amount of a solution of unknown concentration is
added to a known volume of a second solution until the reaction between them is just complete



Determines endpoint of a reaction




light microscope Correct answer-aka optical, microscope that uses a beam of light
passing through one or more (compound) lenses to magnify an object




Digital microscope Correct answer-A type of Microscope that use a camera and a monitor
to allow viewing the sample.




scanning electron microscope Correct answer-a microscope that produces an enlarged,
three-dimensional image of an object by using a beam of electrons rather than light

, Praxis 5435 Exam with Complete Solutions
Graticule slide Correct answer-It is marked with a grid line and is useful only for counting
or estimating a quantity.




Chromatography Correct answer-A technique that is used to separate the components of
a mixture




Analyte Correct answer-substance analyzed or tested, generally by means of laboratory
methods




How to dilute acid Correct answer-Add concentrated acid solution to the water. Put 2/3
total volume of water in grad. cyl. Add acid. Add water to desired volume.




Centrifugate Correct answer-liquid component of solution (clear, not the precipitate),
after being separated in centrifuge.



In blood, blood cells settle and plasma stays on top.




Spectrophotometry Correct answer-Measures how visible light is abosrbed by a colored
solution




Electrophoresis Correct answer-Separation of particles based on electrical charge




Deka- Correct answer-10 (10^1)

, Praxis 5435 Exam with Complete Solutions

Kilo- Correct answer-1000 (10^3)




1000 m in km




Hecto- Correct answer-100




Mega- Correct answer-10^6 (million)




Giga- Correct answer-10^9 (billion)




Tera- Correct answer-10^12 (trillion)




Peta- Correct answer-10^15




Deci- Correct answer-10^-1




Centi- Correct answer-10^-2




Milli- Correct answer-10^-3

, Praxis 5435 Exam with Complete Solutions
Micro- Correct answer-10^-6




Nano- Correct answer-10^-9




Pico Correct answer-10^-12




femto- Correct answer-10^-15




Ampere Correct answer-unit of electric current




Candela Correct answer-luminous intensity




Mole Correct answer-the SI base unit used to measure the amount of a substance




Avogadro's number Correct answer-number of representative particles in a mole, 6.02 X
10^23




significant figures Correct answer-1. Non-zeros

2. Zeros between non-zeros

3. Trailing zeros after non-zeros *if* a decimal is present

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