QUICK EASY QUESTION ?(brains not working )

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AI Thread Summary
Red blood cells originate from the bone marrow, which is located near the hips. The discussion highlights a user's difficulty in recalling this information and seeks assistance. Other participants emphasize the importance of using resources like Google and Wikipedia for basic questions. The conversation underscores the expectation of self-research before seeking help. Overall, the thread serves as a reminder to utilize available online tools for quick answers.
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QUICK EASY QUESTION!?(brains not working!)

Which organ do Red blood cells come from.
I know that is some where near ur hips..but jus can't think of the name:bugeye: ..if anyone know that would be AWSOME!
 
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roxy554 said:
Which organ do Red blood cells come from.
I know that is some where near ur hips..but jus can't think of the name:bugeye:
You know the rules about homework questions (see forum guidelines, if you don't - link in my signature). Besides, this one is incredibly easy to look up.
 
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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