The mass of rock is 2.4 kg anf its volume is 950 cm^3 .

r-soy
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The mass of rock is 2.4 kg anf its volume is 950 cm^3 .

Find its density in (a) g/m^3 9b) kg/cm^3

I attch the answer see pic


[PLAIN]http://store2.up-00.com/Oct10/UyF43394.jpg
 
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looks good to me.. :smile:
 
sure ?
 
yes ... your calculations look correct too
 
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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