Refer to the example about diatomic gases A and B in the text to do problems 20-28. 22.4 liters of gas B are needed to react with liters of gas A to form liters of product, all measured at the same temperature and pressure.

B"hf and f-"  is the correct answer took the test on edgenuity and got it right     

It could possibly be beneficial if the experiment is successful.

Reaction involved in present system is :   c12h22o11 + h2o → 2 c6h12o6the reaction system is obeying following rate law:   rate = k[c12h22o11]thus, it is a first order reaction.now, for 1st order reactionrate constant (k) =  given: initial conc. = 3.0 g, final conc. = 2.7 g, t = 2.5 h∴rate constant (k) =  ∴ k = 0.04215 h-1now, for 1st order reaction, half life = 0.693/k = 0.693/0.04215 = 16.4 hthus correct answer is option b