Solid aluminum reacts with oxygen gas to form solid aluminum oxide. If 6.1 moles of aluminum reacts with excess oxgyen gas, how many moles of aluminum oxide can be formed

Answerchemical;

It is a ok  i know i have a brain functioning well.                                                                                                                                                           

The answer to your q it is d

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