When is the mole ratio from a balanced chemical reaction not needed in a calculation

Theoretically, which metal should be the most reactive? hydrogen lithium francium fluorine

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

Tell me the iupac name of the following compounds: