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Tanzania [10]
3 years ago
13

If a flame is yellow is it considered dirty or clean?And to make it blue do you add or take away air?

Chemistry
1 answer:
Step2247 [10]3 years ago
8 0
It is clean and is blue when you take away air hope i helped.
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When a piece of metal is irradiated with UV radiation (λ = 162 nm), electrons are ejected with a kinetic energy of 3.54×10-19 J.
dsp73

We have that the work function of the metal

\phi=1.227*10^{-18}J

From the Question we are told that

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Generally the equation for Kinetic energy    is mathematically given as

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Which of the following is the best piece of laboratory glassware for preparing 500.0 mL of an aqueous solution of a solid?
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The correct answer is option A.

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Volumetric flask  : A glass ware with round lower body with flat bottom and with thin cylindrical neck along with mark which indicates the specific volume filled to that mark.It is used in preparation of standard solution of compound with desired concentration with fixed volume.

Erlenmeyer flask : is a flask with conical shape with flat bottom used in titration  experiments to carry out reaction with fixed volume of solution.

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Graduated cylinder : Laboratory thin cylindrical glassware with accurate marking of volume used to measure an accurate volume of solutions or liquids required in an experiment.

<em><u>Volumetric flask</u></em> is the best piece of laboratory glassware for preparing 500.0 mL of an aqueous solution of a solid

8 0
2 years ago
Read 2 more answers
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