Help me please!! (This is for a test I’m doing right now and I am really stuck and if you can help please do so)

What is the number of atoms in 3.54 mol s

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

At stp, which substance is the best conductor of electricity? a. nitrogen b. neon c. sulfur d. silver