You are asked to get a compound that has a low melting point and cannot conduct electricity, which would you pick if you saw three bottles labeled as LICI,
NaBr, and BrF. What type of bond did you get?

The phase where ice changes directly to gas is called sublimation 

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

Your is  answer:   4.44*my answers too short so i'm just gonna write this so that it lets me submit it, lol*