Discovering a 12V Light Emitting Chemical: Homework Statement & Equations

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A discussion on the possibility of a chemical that glows when a 12-volt charge is applied reveals that tungsten is a viable option, as it is used in car brake lights. Tungsten bulbs provide sufficient brightness when powered by a 12-volt battery. The conversation emphasizes adherence to homework forum rules, indicating a focus on educational integrity. Participants confirm the brightness of tungsten under these conditions. Overall, the thread highlights the practical application of tungsten in low-voltage lighting solutions.
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Homework Statement





Homework Equations




does anyone know if ther is a chemical that glows when a 12 volt charge is applied

The Attempt at a Solution

 
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Tungsten :eek:
 
n0_3sc said:
Tungsten :eek:

hi, thanks for the reply, this chemical would glow with a 12 volt battery,and do you know if it would be bright, thanks again
 
Yes to all your questions.
Car brake lights are 12V Tungsten bulbs. That's plenty bright :smile:
 
Umm...this is the homework forum. There are rules to be followed.
 
Thread 'Confusion regarding a chemical kinetics problem'

Thread 'Confusion regarding a chemical kinetics problem'

TL;DR Summary: cannot find out error in solution proposed. [![question with rate laws][1]][1] Now the rate law for the reaction (i.e reaction rate) can be written as: $$ R= k[N_2O_5] $$ my main question is, WHAT is this reaction equal to? what I mean here is, whether $$k[N_2O_5]= -d[N_2O_5]/dt$$ or is it $$k[N_2O_5]= -1/2 \frac{d}{dt} [N_2O_5] $$ ? The latter seems to be more apt, as the reaction rate must be -1/2 (disappearance rate of N2O5), which adheres to the stoichiometry of the...
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