Are hemoglobin formation and functioning brains and muscles benefits of Iron?

Write the overall equation for the reaction for lithium battery

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

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins