Can someone actually make a zoom please like rn

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

Answer explain why it is not possible to deduce a complete order of reactivity.

How many moles of no2 will form when 3.3 moles of cu are reacted with excess hno3?