Calculate mass in grams of 0.105 mole of sucrose

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

What is the overall order of reaction for rate = k[no]2[o2]

Indicate whether the specified alkyl halides will form primarily substitution products, only elimination products, both substitution and elimination products, or no products when they react with sodium methoxide. 1-bromobutane 1-bromo-2-methylpropane 2-bromobutane 2-bromo-2-methylpropane