In the first-order decomposition of dinitrogen pentoxide at 335 K,

N2O5(g) → 2 NO2(g) + ½ O2(g)

if we start with a 2.50-g sample of N2O5 at 335 K and have 1.50 g remaining after 109 s, 

(a) What is the value of the rate constant k? 

(b) What is the half-life of the reaction? 

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#Question id: 1287

#Section 3: Genetics, Cellular and Molecular Biology

Biological roles of proteoglycans and hyaluronan include all of the following, except:

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#Question id: 14113

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

SWISS-PROT is related to 

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#Question id: 2291

#Section 3: Genetics, Cellular and Molecular Biology

Ribosomes are found

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#Question id: 14412

#Section 2: General Biology

Which of these disinfectants does not act by disrupting the plasma membrane?

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#Question id: 3716

#Section 3: Genetics, Cellular and Molecular Biology

The e subunit of DNA polymerase III is responsible for its ________ activity.