What are some similarities and differences between the vaccines developed by Pfizer and Moderna? What does the article call out as practical advantages?

Which answer lists the fundamental forces in order from strongest to weakest

According to periodic trend, which of the following most likely has the highest ionization energy? kr be ni sc

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