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3 years ago

What are the basic functions and parts of an LED bulb?? Please Help!!

Chemistry

1 answer:

IgorLugansk [536]3 years ago

5 0

Answer:

Lens

Heat Sink

Housing

Base

Circuit Board/Driver

LED Chips

Explanation:

Does this help you?

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Consider a hydrogen atom in the ground state. What is the energy of its electron?

mr Goodwill [35]

The energy of an electron in a hydrogen atom is:
E= (-2.179 x 10 ^-18 J)(1/n^2)

where n is the principle energy level of the electron.

E= (-2.179 x 10 ^-18 J)(1/4)
E= -2.179 x 10 ^-18 J
E = -5.4 x 10 ^-19 J

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3 years ago

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The elements most likely to form more than type of ion are the....

emmainna [20.7K]

The elements most likely to form more than one type of ion are thetransition metals

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NARA [144]

I think c I’m not positive about the question but I think c

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Calculate the mass in grams of each sample.

OlgaM077 [116]

Answer: The answer is A. - 4.88x10^20 H2O2 molecules

Explanation: I hope this helps!

4 0

3 years ago

The activation energy of a certain uncatalyzed reaction is 64 kJ/mol. In the presence of a catalyst, the Ea is 55 kJ/mol. How ma

Ksivusya [100]

Answer:

About 5 times faster.

Explanation:

Hello,

In this case, since the Arrhenius equation is considered for both the catalyzed reaction (1) and the uncatalized reaction (2), one determines the relationship between them as follows:

$\frac{k_1}{k_2}=\frac{Aexp(-\frac{Ea_1}{RT} )}{Aexp(-\frac{Ea_2}{RT})} \\\frac{k_1}{k_2}=\frac{exp(-\frac{Ea_1}{RT} )}{exp(-\frac{Ea_2}{RT})}$

By replacing the corresponding values we obtain:

$\frac{k_1}{k_2}=\frac{exp(-\frac{55000J/mol}{8.314J/molK*673.15K} )}{exp(-\frac{64000J/mol}{8.314J/molK*673.15K} )} =4.8$

Such result means that the catalyzed reaction is about five times faster than the uncatalyzed reaction.

Best regards.

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3 years ago